JPH06190686A - Feedback type working condition correcting device - Google Patents

Abstract

(57) [Summary] [Purpose] In an apparatus that corrects the machining conditions of the workpiece to be processed next by feeding back the dimensional error of the machined workpiece, manual correction is given priority over automatic correction, and manual correction is performed. The accuracy of automatic correction is ensured even immediately after correction. An operator uses a feedback-type fixed-point compensator used with a machining system for cylindrically grinding a journal surface of a crankshaft of an engine.
A sizing device 14 corrects the sizing point of the sizing device 14 according to the operation of the
The control device 20 controls the sizing device 14 based on the measurement value of
The sizing point of shall be automatically corrected. Furthermore, if manual correction is performed on the controller 20, the automatic correction is interrupted, and the work affected by the manual correction is the total number of measuring machines 1.
The automatic correction shall be restarted after the time measured by 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a feedback type machining condition correction device for correcting the machining condition of a workpiece to be machined next by feeding back information on the dimensional error of the machined workpiece.

[0002]

2. Description of the Related Art The following is already available as one type of the above feedback type machining condition correcting device. This is (a) a processing machine that sequentially processes each of multiple workpieces,
(b) A processing machine control means for determining the processing conditions of the processing machine based on the correction value supplied from the outside and controlling the processing machine according to the determined processing conditions; and (c) a plurality of processing machines processed by the processing machine. Is a feedback type machining condition correction device to be used by being connected to the machining machine control means and the measuring machine of the machining system including the measuring machine for sequentially measuring the respective dimensions of the workpiece, and measuring by the measuring machine Based on the value
It includes an automatic correction means for sequentially determining the correction value of the processing condition of the work to be processed next by the processing machine as an automatic correction value and supplying it to the processing machine control means.

[0003]

According to the research of the present applicant, when the correction of the processing conditions depends only on the automatic correction, there is a limit in improving the quality regarding the dimension of the work, and the partial manual correction is performed. It was found that it is important to improve the processing quality.

When the manual correction is necessary, for example, a case where the processing tool in the processing machine is replaced and the processing error suddenly changes can be cited. This is because the automatic correction is basically executed on the assumption that the processing error changes almost continuously, and therefore the processing condition cannot be corrected with such high accuracy when the processing error changes abruptly.

If there is a machining system between the machining machine and the measuring machine that allows a workpiece waiting for measurement by the measuring machine to exist, and there is a workpiece waiting for measurement in such a machining system, Even if some abnormality occurs in the processing machine, it cannot be detected until the work affected by the abnormality reaches the measuring machine, and automatic correction is performed to eliminate the abnormality. I can't. Therefore, it has been proposed that the machining error of the workpiece be periodically checked immediately after the machining of the workpiece by the processing machine to detect abnormalities quickly, and even in this case, the machining conditions can be promptly determined according to the check result. Manual correction is required to correct

On the basis of such knowledge, the invention of claim 1 has as an object to enable not only automatic correction but also manual correction in the feedback type machining condition correcting device.

By the way, the present applicant has previously devised the following as one mode of the feedback type machining conditions of the above-mentioned type, Japanese Patent Application No. 4-61305 and Japanese Patent Application No. 4-235.
No. 402 and the like. That is, the automatic correction means successively accumulates the measured values by the measuring machine, and successively determines the automatic correction values based not only on the latest measured value but also on the accumulated past measured values to the processing machine control means. It is a feedback type processing condition correction device that performs automatic correction to be supplied.

Here, "to successively determine the automatic correction value based not only on the latest measured value but also on the accumulated past measured value" means, for example, between the measured value of this time and the target dimension of the workpiece. The automatic correction value is sequentially determined based on the difference between this time's error value and its change tendency, and the automatic correction value is determined based on this time's measured value, its change tendency, and that change tendency. It means the mode of sequentially deciding, the mode of estimating the true value of the current measurement value based on the past measurement value, and deciding the estimated true value as the current measurement value, and successively deciding the automatic correction value. To do. Note that the "current error value change tendency" is, for example, the current differential value that is the difference between the current error value and the previous error value, and
The “change tendency of the change tendency” is, for example, the twice-differential value of this time, which is the difference between the differential value of this time and the differential value of the previous time.

Against this background, the invention of claim 2 is to provide an aspect in which the invention of claim 1 is applied to the feedback type machining condition correcting device devised above. It is a thing.

[0010]

The invention according to claim 1 is based on FIG.
As shown in (a), a feedback type machining condition correction device of the type to be used together with the machining system including the machining machine 1, the machining machine control means 2 and the measuring machine 3 is processed based on (a) an operator's command. A manual correction means 4 for determining a correction value of the processing condition of the work to be processed next by the machine 1 as a manual correction value and supplying it to the processing machine control means 2;
Based on the measurement value by the measuring machine 3, the correction value of the processing condition of the work to be processed next by the processing machine 1 is sequentially determined as the automatic correction value, and the automatic correction is supplied to the processing machine control means 2 to perform the manual correction. If the manual correction is performed by the means 4, the automatic correction is interrupted, and the workpiece machined according to the processing conditions affected by the manual correction value supplied from the manual correction means 4 to the processing machine control means 2 is measured. The automatic correction means 5 for restarting automatic correction after the time measured by the machine 3 is included.

The "manual correction means 4" here may be, for example, a mode in which a manual correction value is directly supplied to the processing machine control means 2 or is indirectly supplied to the processing machine control means 2 via an automatic correction means 5. It is possible to adopt a mode.

The term "interruption of automatic correction" means that at least the supply of the automatic correction value and the supply of the automatic correction value to the processing machine control means 2 is interrupted.

Further, in this case, "restart automatic correction" means that when the "interruption of automatic correction" mode interrupts both determination and supply of automatic correction values, both determination and supply are restarted. On the other hand, when the mode of “interrupting the automatic correction” is to interrupt only the supply of the automatic correction value, it means to restart only the supply.

The term "when the workpiece machined according to the machining conditions affected by the manual correction value is measured by the measuring machine 3" means that the machining system is located between the processing machine and the measuring machine. When there is a work waiting for the measurement by the measuring machine, and there is actually a work waiting for the measurement in such a processing system, usually, "the influence of the manual correction value is Of the plurality of workpieces processed according to the received processing conditions "means the time when the measuring machine 3 measures the leading one.

Further, herein, "after the time when the workpiece machined according to the machining condition affected by the manual correction value is measured by the measuring machine 3" means "at the same time as the measured time". , Or "at a time later than the time measured".

According to a second aspect of the present invention, the automatic correction means 5 according to the first aspect of the present invention successively accumulates the measured values by the measuring machine 3, and not only the latest measured value but also the accumulated past measured values. The automatic correction value is sequentially determined based on the automatic correction value to be supplied to the processing machine control means 2. If the manual correction means 4 performs the manual correction, the automatic correction is interrupted, and the manual correction means 4 performs the processing. After the time when the workpiece machined according to the machining condition affected by the manual correction value supplied to the machine control means 2 is measured by the measuring machine 3, the accumulation of the measured value is restarted from the non-accumulation state to perform the automatic correction. The feature is that it will be restarted.

[0017]

In each of the feedback type machining condition correcting apparatus according to the first and second aspects of the present invention, the manual correcting means 4 processes the work to be processed next by the processing machine 1 based on the operator's instruction. The correction value of the condition is determined as the manual correction value and supplied to the processing machine control means 2.

Further, by the automatic correction means 5, the measuring machine 3
Based on the measured value by the processing machine, the correction value of the processing condition of the work to be processed next by the processing machine 1 is sequentially determined as the automatic correction value and supplied to the processing machine control means 2. However, when the manual correction means 4 performs the manual correction, the automatic correction means 5 interrupts the automatic correction, and the influence of the manual correction value supplied from the manual correction means 4 to the processing machine control means 2 is affected. The automatic correction is restarted after the time when the workpiece machined according to the received machining conditions is measured by the measuring machine 3.

That is, the manual correction is executed prior to the automatic correction, and in the automatic correction, the work preceding the work affected by the manual correction, that is, the work not affected by the manual correction is performed. The automatic correction value is determined based on the measured value of the work affected by the manual correction, not the measured value of. Therefore, for example, even when there is a standby work waiting for the measurement by the measuring machine 3 between the processing machine 1 and the measuring machine 3, the influence of the measured value of the standby work which is not affected by the manual correction. Since the automatic correction value is determined without receiving the correction, the accuracy of the automatic correction is secured even immediately after the manual correction.

Particularly, in the feedback type machining condition correcting apparatus according to the second aspect of the present invention, the automatic correction means 5 successively accumulates the measured values by the measuring machine 3, and not only the latest measured value but also the past accumulated values. The automatic correction value is sequentially determined on the basis of the measured value and is supplied to the processing machine control means 2. However, when the manual correction means 4 performs the manual correction, the automatic correction means 5 interrupts the automatic correction, and the influence of the manual correction value supplied from the manual correction means 4 to the processing machine control means 2 is affected. After the time when the workpiece machined according to the machining conditions received is measured by the measuring machine 3,
Accumulation of measurement values is resumed from the non-accumulation state and automatic correction is resumed.

That is, in the automatic correction, the measured values of the work preceding the work affected by the manual correction, that is, the work not affected by the manual correction are not accumulated, and the influence of the manual correction is not accumulated. The measured value of the received work is accumulated. Therefore, regardless of whether or not there is a work waiting for measurement by the measuring machine 3 between the processing machine 1 and the measuring machine 3, the measured values of the work not affected by the manual correction are not accumulated. Even immediately after the manual correction, the accuracy of the automatic correction is ensured.

[0022]

As is apparent from the above description, according to the inventions of claims 1 and 2, not only automatic correction but also manual correction can be performed, and even immediately after the manual correction. Since the accuracy of the automatic correction is ensured, the effect of improving the reliability of the feedback type processing condition correction device can be obtained.

In particular, according to the second aspect of the present invention, in the feedback type machining condition correction device in which the automatic correction is performed based on the accumulated past measured values, the accuracy of the automatic correction is improved even immediately after the manual correction. The effect of being secured is obtained.

[0024]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A feedback type sizing point correcting apparatus, which is an embodiment common to the inventions of claims 1 and 2, will be described below in detail with reference to the drawings.

This sizing point correcting device is used together with a machining system in which a crankshaft of an automobile engine is used as a workpiece to be machined, and a plurality of journal surfaces formed in advance are cylindrically machined as machining sites. As shown in FIG. 2, the crankshaft is a work having journal surfaces that are seven outer peripheral cylindrical surfaces (hereinafter, simply referred to as “cylindrical surfaces”) arranged coaxially with each other.

Specifically, as shown in FIG. 3, the processing system includes a processing line, a processing machine 10, two in-process measuring machines 12 (shown as one in the figure), a sizing device 14,
It is composed of a motor controller 15, a total number measuring machine 16, a work number counter 18, a control device 20, an auxiliary storage device 22 and the like, and these elements will be individually described below.

The processing line is represented by a thick solid line with an arrow in the figure, and a plurality of works are conveyed in line from the upstream side to the downstream side (from the left side to the right side in the figure). Is.

The processing machine 10 performs cylindrical grinding on each of the seven journal surfaces of the crankshaft with a circular grindstone as a processing tool. Specifically, as shown in FIG. 4, a grindstone group 3 in which a plurality of grindstones are coaxially arranged
By rotating 0 and the crankshaft in contact,
It is a multi-grinding machine that simultaneously performs cylindrical grinding on all seven journal surfaces. The configuration will be briefly described below.

The processing machine 10 has a work table 32 for a work. The work table 32 is attached to a main frame (not shown) of the processing machine 10.
The work table 32 is provided with a holding device (not shown) that holds the work rotatably around its axis and a work motor 34 that rotates the held work.

The processing machine 10 further includes a forward / backward table 36 and a swing table 38 for the grindstone group 30. The forward / backward table 36 is attached to the main frame in a state capable of reciprocating motion in a direction perpendicular to the work held by the work table 32. On the other hand, the swing table 38 has a swing axis line (a straight line extending in a direction perpendicular to the paper surface in the figure) set on the forward / backward table 36 in a state orthogonal to the axis of the grindstone (indicated by a dashed line in the figure).
Swing centering around is possible (right rotation or left rotation is possible)
It is installed in a normal state. Forward / backward table 36
The forward / backward movement of the motor is fixed to the main frame.
0, the swing of the swing table 38 is realized by the swing motor 42 fixed to the forward / backward table 36.

That is, in this processing machine 10, the angle formed by the axis of the grindstone and the axis of rotation of the workpiece (hereinafter referred to as "cutting angle") can be adjusted by the swing motor 42.

The two in-process measuring machines 12 are attached to the processing machine 10. As shown in FIG. 2, each of the in-process measuring machines 12 has a pair of measuring elements sandwiching one cylindrical surface from both sides of the outer circumference, and measures the diameter of the cylindrical surface by an electric micrometer method. . The in-process measuring machines 12 are not individually prepared for seven journal surfaces, but as shown in the figure, the journal surfaces at both ends, that is, the first journal surface and the seventh journal surface (hereinafter, (Also referred to as “two end cylindrical surfaces”).

The sizing device 14 is, as shown in FIG.
Each of them is connected to the in-process measuring machine 12. The sizing device 14 is mainly composed of a computer including a CPU, a ROM, a RAM, and a bus, and during grinding by the processing machine 10, the diameters of the two end cylindrical surfaces are passed through the respective in-process measuring machines 12. When the remaining depth of cut on each end cylindrical surface (the amount that must be cut before reaching the final dimension) reaches each set value (existing for each end cylindrical surface), a signal to that effect. (Hereinafter, "set amount arrival signal"), when reaching each final dimension, that is, each sizing point (existing for each end cylindrical surface), a signal to that effect (hereinafter, "sizing point arrival signal") ) Is output to the motor controller 15 in association with each end cylindrical surface.

The sizing device 14 is also designed so that each sizing point can be corrected. Specifically, when each correction value U (existing for each end cylindrical surface) is supplied from the control device 20, each correction value U is added to each current sizing point to obtain each current value. It is designed to update the sizing points and keep the current sizing points if they are not supplied. That is, in the sizing device 14, the sizing point is automatically corrected by the control device 20.

As shown in FIG. 3, a keyboard 50 is connected to the sizing device 14, and when the keyboard 50 is operated by an operator, the sizing device 14 will have a manual correction value according to the operation. It is also designed to make manual corrections that only change the current sizing point. The sizing device 14 also
The latest manual correction value and the sizing point are stored in their own RAMs and voluntarily transmitted to the control device 20.
However, since the control device 20 does not always receive the latest manual correction value and the current sizing point from the sizing device 14, the sizing device 14 transmits only when the control device 20 permits reception. Will be done.

The motor controller 15 is connected to the sizing device 14, the forward / backward motor 40, etc., as shown in FIG. The motor controller 15 controls the forward / backward motor 40 and the like based on a command from an operator, a signal from the sizing device 14, and the like.

By the way, the processing machine 10 completes one round of cylindrical grinding through several stages such as rough polishing, fine polishing, spark out, and the like. The rough polishing is performed until the remaining depth of cut reaches the set amount, and the fine polishing is performed until the diameter reaches the sizing point. It is usual that the two set amount arrival signals to be supplied from the sizing device 14 for each end cylindrical surface do not coincide in the supply timing, and the motor controller 1
In the rough grinding stage, 5 controls the forward / backward motor 40 and the swing motor 42 in accordance with the amount of discrepancy in the signal supply timing, thereby appropriately controlling the cutting angle. Further, in the fine grinding, since the cutting angle should be appropriate in the rough grinding preceding that, the motor controller 15 drives only the forward / backward motor 40 to cut the grindstone group 30 into the work. Continue to 2
If a sizing point arrival signal is supplied to any one of the end cylindrical surfaces, the forward / backward motor 40 is stopped, spark-out is performed, and then the forward / backward motor 40 is rotated in the reverse direction to grind stone groups. 30 is retracted from the work. It is also possible to control the cutting angle even at the stage of fine polishing.

As shown in FIG. 3, the total number measuring machine 16 is arranged downstream of the processing machine 10 on the processing line. The total number measuring machine 16 has the same number of post-process measuring machines 44 as the number of cylindrical surfaces in one work, and by the same method as the in-process measuring machine 12, all the work carried out from the processing machine 10 are sequentially processed. The diameter is measured individually on all cylindrical surfaces. The total number measuring machine 16 is connected to the input side of the control device 20.

As shown in the figure, the work number counter 18 measures the number of waiting works between the processing machine 10 and the total measuring machine 16 on the processing line, waiting for the measurement by the total measuring machine 16. Is. Work counter 1
Reference numeral 8 denotes a first sensor (for example, a limit switch or the like) 46 that detects the carry-out of the work from the processing machine 10 and a second sensor (for example, a limit switch or the like) 48 that detects the carry-in of the work to the total number measuring machine 16. Is connected to and the count value of the number of standby works is incremented by 1 each time the first sensor 46 detects the work carry-out, while the count value is detected each time the second sensor 48 detects the work carry-in. Is subtracted by 1 to measure the current value of the number of waiting works.

The control device 20 includes a CPU, ROM, and R
It is mainly composed of a computer including an AM and a bus, and a fixed point correction routine is stored in advance in its ROM. The control device 20 is also connected to the auxiliary storage device 22, and the total number measuring device 1
It is designed to store all the measured values X input from 6 and the correction values U determined based on them. This is because it is used when an operator diagnoses the machining status after a series of machining is completed.

The main part of the above-mentioned fixed point correction routine is shown in FIG.
A flow chart is shown in FIG. 10, and the configuration of the control device 20 will be described based on these figures, but first, a schematic description will be given.

The control unit 20 feeds back the dimension information based on the dimension measured by the total number measuring machine 16 to determine the correction value U of the sizing point for the work to be processed next by the processing machine 10. To do. This processing system is designed to allow a workpiece waiting for dimension measurement to exist between the processing machine 10 and the total number measuring machine 16. Therefore, the control device 20 assumes a control system in which the input signal is the correction value U, the output signal is the dimension information, and there is a dead time MS between the input signal and the output signal, and the feedback system is used to perform the sizing. Correct the points. That is, in the present embodiment, the sizing point is one aspect of the "machining condition" in the invention of each claim.

The flow of processing in the control device 20 will be described below.
A simple description is as shown in FIG.

First, as the first step, the total measuring machine 1
The measurement value X is input from 6, and then, as a second step, a moving average value P is calculated with respect to the measurement values X acquired up to this time in order to remove the adjacent variation from the measurement values X. It In the RAM of the computer, the measured value X
An arithmetic data memory (not shown) for accumulating the above is provided, and the moving average value P is calculated based on the measured value X accumulated in the arithmetic data memory.

Next, as a third step, both-end diameter correction (described in detail later) is performed on the moving average value P,
Further, as a fourth step, based on the plurality of moving average values P whose both end diameters have been corrected (also stored in the calculation data memory), the error value R, the differential value T, and the twice differential value D of this time. Are calculated as the dimension information. Then, as a fifth step, the correction value U is calculated by fuzzy calculation based on the dimension information and the number of standby works (corresponding to the dead time MS) measured by the work number counter 18. Subsequently, as a sixth step, the correction value U is corrected by considering the continuity thereof, and as a seventh step, the correction value U is set in relation to the sizing device 14. It is determined whether it is in the dead zone, and if it is not in the dead zone,
As the eighth step, the correction value U is transmitted to the sizing device 14.

Further, in the control device 20, not the continuous correction for determining the current correction value U each time the workpiece is measured by the total number measuring machine 16, but the intermittent correction for intermittently determining is adopted. There is. Further, as the correction value U is intermittently corrected, the calculation data memory is also cleared intermittently.

It should be noted that the control device 20 is equipped with 7
The measurement value X is individually input for all of the journal surfaces, but basically, it is based on the measurement value X of each of the first journal surface and the seventh journal surface, that is, the measurement value X of each end cylindrical surface. Thus, the correction value U corresponding to each end cylindrical surface in the sizing device 14 is determined.

Although the overall flow of the control device 20 has been briefly described above, each concept in this flow will be individually described in detail below.

First, the calculation of the moving average value P will be described.

The measured value X is acquired as time-series data by the total number measuring machine 16, and includes many adjacent variations. Therefore, in the present embodiment, in order to remove the variation between adjacent portions and estimate the true dimension of the work, the measured value X of this time and the latest measured value X of at least one acquired up to the previous time are shown in FIG. A weighted moving average value P is calculated and used as the true value of the measured value X, as shown conceptually in the graph in FIG. In this graph, "i" represents the number of works measured by the total number measuring machine 16 (hereinafter referred to as "measured work number"). The same applies to other graphs.

In principle, this moving average value P is calculated as follows. That is, based on the latest K (fixed value of 2 or more) measurement values X acquired up to this time, the moving average value of this time is calculated using a calculation formula represented by the following formula (when K = 5). P _i is calculated.

[0052]

[Equation 1]

However, if this principle is adhered to, the moving average value P cannot be calculated until the number of measured values X accumulated in the operation data memory reaches K, and FIG.
As shown in FIG. 3, neither the error value R nor the differential value T that should be calculated using this can be calculated, and thus the time in which a new correction value U cannot be determined becomes long. In addition, this figure is represented as the number i of measured works increases from the left side to the right side. The same applies to FIGS. 14 and 15 described later.

Therefore, in this embodiment, when the number of measured values X stored in the arithmetic data memory does not reach K, according to a special rule different from the case where the number of measured values X reaches K,
The moving average value P is calculated.

The special rules include a substitution type moving average value calculation rule and a variable type moving average value calculation rule. The details will be described below.

First, the substitution type moving average value calculation rule is shown in FIG.
As shown in FIG. 4, each of the K moving average values P scheduled to be present, which does not actually exist, is given a corresponding moving average value P.
Is to be replaced with the measurement value X itself acquired at the same time as the acquisition. This is based on the property that the measured value X and the moving average value P that are acquired at the same time are originally close to each other, and the calculation of the moving average value P according to this rule means that the replacement type moving average value calculation is performed. Say.

In this substitution type moving average value calculation, is the time when the moving average value P is replaced each time a little before the time when the moving average value P is calculated in principle for the first time after that? It is possible to virtually obtain it by replacing the moving average value P with the measured value X, regardless of whether it is long before. However, in this case, there are the following problems. That is, as the ratio of the virtually calculated moving average value P in the L moving average values P used to calculate one differential value T increases, the accuracy of the differential value T decreases. Consequently, there is a problem that the accuracy of the correction value U may decrease.

In order to solve this problem, the number of virtual moving average values P used to calculate one differential value T should be limited. The example in the figure is an example in which such a limitation is added, and in this case, only within the past three times from the latest regular moving average value P (that is, the replacement limitation number Z is 3). The calculation of the virtual moving average value P is allowed. In such a case, even if the replacement type moving average value is calculated, the moving average value P should be calculated while the number of measurement values X accumulated in the arithmetic data memory is small. I can't.

On the other hand, the variable moving average value calculation rule prepares a weighted moving average value calculation formula for each of the number of measurement values X (a number smaller than K), and measures stored in the operation data memory. Select the calculation formula that matches the number of values X,
The rule is to obtain the moving average value P by using it (see FIG. 15). Calculating the moving average value P according to this rule is called variable type moving average value calculation. The following weighted moving average calculation formulas can be individually prepared, for example.

[0060]

[Equation 2]

In this example, the moving average value P can be calculated even if the number of measured values X stored in the arithmetic data memory is one. Therefore, in this example, the situation in which the moving average value P cannot be calculated does not occur because the number of measurement values X accumulated in the arithmetic data memory is small.

In this embodiment, the operator gives an instruction as to whether or not to execute the above-described calculation of the moving average value P by a special method (hereinafter, referred to as special moving average value calculation). When the moving average value calculation is instructed, the selection of the type is also performed according to the instruction from the operator. That is, when the special moving average value calculation command is issued, either the replacement type moving average value calculation command or the variable type moving average value calculation command is always issued.

Here, a method of determining the weighting coefficient b in the weighted moving average calculation formula will be described.

The value of each weighting factor b is determined in relation to the frequency of the component wave to be removed from the measured value X which is the original variation. For example, it is multiplied by the value of each weighting factor b. It can be determined that the newer the measured value X to be taken is with respect to the latest measured value X, the more nearly proportionally it increases (see FIG. 12). For example, above
b _{i- 4} , b _i-3 , b _i-2 , b _i-1 and b _i can be 1, 2, 3, 4 and 5, respectively.

In addition, as in the case where the number of standby works existing between the processing machine 10 and the total number measuring machine 16 is 0, or when it is not 0, it hardly changes, the measured value is calculated by the moving average. When the frequency of the component wave to be removed from X hardly changes, the value of each weighting coefficient b can be determined as follows, for example.

First, the angular frequencies of each of the s component waves to be removed from the measured value X, which is the original fluctuation, are ω ₁ , ω ₂ ,.
.., ω _j , ..., ω _s , and the following equation is created.

[0067]

[Equation 3]

Then, the coefficient of this equation 1, a _s-1 , ...
·, A _0, ..., respectively 1 to a ₀ of a _s-1, 1, the weighting factor _{b is, b i- (s-} 1), is to determine ..., to b _i .

In the machining system to which the control device 20 is connected, as described above, the grindstone group 30 is operated only on the basis of the diameters of the two end cylindrical surfaces of all the cylindrical surfaces of the work. Therefore, when the sizing point is corrected without considering the measured values X of the two end cylindrical surfaces but the measured values X of the other cylindrical surfaces, the machining accuracy of each cylindrical surface is the whole. In some cases, it may not be sufficiently uniform.

Therefore, in the present embodiment, the following technique is adopted to solve this problem. That is, as conceptually shown in the graph of FIG. 16, the axial position of each cylindrical surface of the work (“1J” to “7J” in the figure).
And the diameter of each cylindrical surface (that is, the moving average value P)
Assuming that and are in a proportional relationship, a technique called both-end diameter correction is adopted in which the measured values X of the two end cylindrical surfaces are respectively corrected.

A specific example of this both-end diameter correction is as follows. That is, as the both end diameter correction calculation formula,

[0072]

[Equation 4]

The following equation is adopted, and the correction value of the moving average value P of each end cylindrical surface is calculated by using this equation. However, x: number of journal surface (numbered 1 to 7 from the first journal surface to the seventh journal surface) x ': average value of seven x values y: movement at each value of x Modified value of average value P: Calculated value of moving average value P at each value of x P ': Average value of calculated values of 7 moving average values P

Specifically, for the first journal surface, the corrected value y ₁ of the moving average value P is obtained by substituting 1 for "x" in the above equation, and for the seventh journal surface, , By substituting 7 for “x”,
The corrected value y ₇ of the moving average value P is acquired.

In this embodiment, the operator also gives an instruction as to whether or not to execute the both-end diameter correction.

In this embodiment, the moving average value P
Both ends are corrected for diameter,
It is also possible to perform both-end diameter correction on the measured value X itself, which is the basis of the moving average value P.

As described above, the dimension information acquired for the work includes not only the error value R but also the differential value T thereof and the twice differential value D which is the differential value of the differential value T. The error value R is one mode of "dimensional error", the differential value T is one mode of "change tendency of dimensional error", and the twice differential value D is one mode of "change tendency of change tendency".

As described above, the reason why the correction value U is determined based on the parameters other than the error value R is that the differential value T of the correction value U is determined as compared with the case where the correction value U is determined based on only the error value R. Alternatively, when the correction value U is also determined based on the twice-differential value D, the actual state of the processing machine 10 can be more accurately estimated, and the correction accuracy of the sizing point is improved. . The technique for determining the correction value U based not only on the error value R but also on the differential value T is disclosed in Japanese Patent Application No.
No. 61305, and a technique for determining the correction value U based on the second derivative D is also filed as Japanese Patent Application No. 4-235402 of the present applicant.

As shown in the graph conceptually in FIG. 17, the differential value T is, in principle, the error value R acquired this time and at least one latest error value R acquired up to the previous time.
It is assumed that the L (fixed values of 2 or more) error values R consisting of
A linear regression line to which each of the error values R fits is identified, and the gradient thereof is acquired as a differential value T (which matches tan θ when the gradient of the primary regression line is θ radian).

Specifically, as the equation of the primary regression line, for example,

[0081]

[Equation 5]

The following equation is adopted. However, x: value of the number of measured works i x ′: average value of L x values y: true value of error value R at each value of x R: calculated value R of error value R at each value of x ′: Average value of L error value R calculated values, and

[0083]

[Equation 6]

The value of is the differential value T. However, if this principle is followed, similar to the case of calculating the moving average value P, if the number of error values R accumulated in the calculation data memory does not reach L, the differential value T is calculated. I can't.

Therefore, in the present embodiment, in accordance with the calculation of the moving average value P, the formula of the linear regression line is prepared individually for each number of moving average values P (a number smaller than L), A technique is adopted in which an equation that matches the number of error values R stored in the arithmetic data memory is selected and the differential value T is obtained using the equation.

In this embodiment, the operator is also instructed whether or not to execute the variable differential value calculation.

The twice-differential value D is calculated in the same manner as the differential value T. That is, the latest Q (2
Assuming that the above (fixed values) differential values T are approximately proportional to the increase in the number of measured works i, a first-order regression line to which these Q differential values T fit is specified, and the gradient thereof is calculated twice. Differential value D (tan θ when the slope of the primary regression line is θ radian
To match)).

In the present embodiment, the second derivative D
Whether or not to use is also set by the operator.

Further, in the present embodiment, the technique corresponding to the variable differential value calculation related to the differential value T is not adopted for the twice differential value D, but it is of course possible to adopt it.

In this control device 20, in order to determine the correction value U, intermittent correction, dead time consideration type correction, fuzzy calculation (fifth step in FIG. 11), continuity consideration (sixth step in the same figure). ) And dead zone consideration (7th step in the same figure). Hereinafter, each of them will be described in detail.

(1) Intermittent correction In the correction of the sizing point, every time the dimension of the work is measured by the total number measuring machine 16, the correction value U of the sizing point of the work to be processed next by the processing machine 10 is set. It is possible to employ a correction method that is a continuous correction to be determined. However, when this continuous correction is adopted, there are the following problems. That is, since the correction value U must be individually determined for all the workpieces measured by the total number measuring machine 16,
There is a problem that the control device 20 is heavily burdened.

In order to solve this problem, in this embodiment, a correction method called intermittent correction is adopted.

This intermittent correction is conceptually shown in a graph in FIG. This graph is acquired when there are a plurality of standby works between the processing machine 10 and the total measuring machine 16, and the “measurement delay” in this graph means the processing machine 10 and the total measuring machine 16. Equivalent to the number of waiting works between and. In addition, “U _i ” is the correction value of this time and is “U _{i + 1} ”.
Indicates the next correction value. Therefore, the influence of the correction value U _i of this time appears on the dimension error only after the measurement delay, and similarly, the influence of the next correction value U _{i + 1} also appears on the dimension error after the measurement delay. In addition, this graph is based on the assumption that, when a plurality of works are machined in order under the same fixed size point, the dimensional error of each work increases almost in proportion to the increase in the number of measured works i. It is also acquired by. The same applies to the following graphs.

The present applicant has devised two modes as a method of performing this intermittent correction. Hereinafter, each of these methods will be described in detail.

First Method of Intermittent Correction This fixed-size point correction apparatus is used with a processing system that allows a workpiece to exist between the processing machine 10 and the total counting machine 16 as described above. Since it should be, it is not always the case that the workpiece machined under the sizing point affected by the previous correction value U is measured by the total number measuring machine 16 immediately after that, and the measurement of several different workpieces is performed. In some cases, it may be measured for the first time after passing. Therefore, when it is necessary to directly reflect the influence of the previous correction value U on the present correction value U, at least 1 processed under the sizing point affected by the previous correction value U is processed. One workpiece is a total measuring machine 1
It is desirable to determine the correction value U of this time each time it is measured by 6.

Against the background of such circumstances, the first method, as conceptually shown in the graph of FIG. 19, successively accumulates the measured values X by the total number measuring instrument 16 and accumulates the accumulated measured values X.
When the number of becomes set plurality or, to determine the current correction value U _i based on their accumulated latest settings plurality of measurement X, affected by the current correction value U _i After the time when the head correction target work to be measured first by the total number measuring machine 16 out of at least one work processed under the sizing point ends the measurement (for example,
Immediately after the end of the measurement), the accumulation of the measured value X is resumed from the non-accumulation state.

In this method, for example, after the correction value U _i for this time is determined and transmitted to the sizing device 14, the correction value U for the next time is determined.
_In the correction interval period until _{i + 1} is determined and transmitted to the sizing device 14, the correction value U is not determined, and the sizing point in the sizing device 14 is maintained at the same value. be able to. Then, in this case, the magnitude of the correction value U _{i at} this time is normally calculated on the assumption that the proportional relationship is established between the number i of measured works and the dimensional error.
The dimensional errors of the plurality of works affected by _i are determined so as to approach 0 as a whole as a whole.

However, this embodiment has the following problems. That is, there is a problem that the execution timing of each correction is uniquely determined by the number of accumulated measurement values X regardless of the actual fluctuation of the measurement value X, and each correction is not executed at the time when it is really necessary. It will happen.

In order to solve this problem, a dead zone is set in relation to the sizing device 14 for the transmission of the correction value U, and when the determined correction value U is substantially 0, the dead zone is set. The correction value U is not transmitted to the sizing device 14 and a new measurement value X is obtained without clearing the calculation data memory.
The correction value U may be decided again after waiting for the acquisition of By doing so, each correction can be performed in a timely manner at the time when it is really necessary. The technique of setting a dead zone in the correction value U is disclosed in Japanese Patent Application No. 4-27 of the present applicant.
It has been filed as No. 8146.

However, even in this case, when the measured value X has an unexpected change after the end of each correction, it is not possible to quickly respond to the change and correct the sizing point. . When an unplanned change occurs in the measured value X after the end of each correction, the unplanned change is accumulated in the calculation data memory and reflected in the next correction value U _{i + 1} . In this way, the sizing point cannot be corrected in response to the unexpected change without waiting until the next correction. Therefore, the measured value X is calculated after each correction.
However, there is a problem that the dimensional error of the work does not approach 0 sufficiently when the change occurs unexpectedly.

In order to solve this problem, the first method may be implemented in the following manner. That is, FIG.
As indicated conceptually by a graph in FIG. 0, one intermittent correction is followed by a main correction which is an intermittent correction in the above-described mode (for example, determining “U _i ” in FIG. 19) and an auxiliary correction. By performing the above, the sizing point may be corrected in such a manner that an unplanned change in the measured value X after the main correction is completed is quickly corrected by the auxiliary correction.

Here, the "main correction" means that the measured values X by the total number measuring device 16 are successively accumulated, and when the number of accumulated measured values X is equal to or more than a set number, the latest accumulated values are accumulated. The correction value U for this time is determined based on a plurality of set measurement values X, and is used as the final correction value U _F.

The "auxiliary correction" means that the measurement value X is continued to be accumulated even after the main correction is completed, and the main correction is performed after the main correction is completed (for example, immediately after the main correction is completed). Of the at least one workpiece machined under the sizing point affected by the final correction value U _F of
Before the time when the measurement is completed (for example, until the end time of the measurement) of the work that has been machined only once before the work piece to be head corrected, which is to be measured by 6, each time it is measured, on the basis of the stored latest settings plurality of measurement values X, to determine each time the provisional correction value U _P according to the same rules as the final correction value U _F of the main correction, each time the interim that the determined From the correction value _UP to the previous correction value (when the previous time is the main correction, the final correction value U _F of the main correction, and when the previous time is the time with the auxiliary correction, the temporary correction value U of the time _The value obtained by subtracting _P ) is determined as the final correction value U _F for each time.

In this auxiliary correction, originally,
The final correction value U _F should be determined on the basis of the measured value X of the workpiece that has been influenced by the main correction performed prior to it. However, the work affected by the main correction is not measured by the total counting machine 16 immediately after machining, but is measured only after some other work is measured. Therefore,
In this embodiment, the main correction is performed only once so that the influence of the main correction does not overlap and is not reflected in the sizing point corresponding to the work to be processed next. was about until the time before ending the measurement work, those correction value determined according to the same rules as in the main correction based on each time of measurement X is a provisional correction value U _P, then the effect of the main correction removed The final correction value U _F of the auxiliary correction is set. The relationship between the main correction and the first time of the auxiliary correction has been described above, but the same applies to the relationship between one time and the next time in the auxiliary correction.

However, in the mode in which the main correction and the auxiliary correction are performed, when the auxiliary correction is always executed until the end time of the intermittent correction of a certain time to which it belongs, the control device 20 itself is slightly affected. The problem that a big burden is imposed arises.

In order to solve this problem, the number of executions of auxiliary correction may be limited. That is, the number of determinations of the final correction value U _F in the series of auxiliary corrections is measured, and when the measured number of determinations reaches the set value, the series of auxiliary corrections is ended. However, with this measure,
The end time of the auxiliary correction is fixed in relation to the end time of the main correction, and the execution time of the auxiliary correction is optimal for responding to an unexpected change in the measured value X after the end of the main correction. There is a problem that it is not limited.

In order to solve this problem, auxiliary correction
It may be carried out in the following manner. That is, auxiliary correction
Final correction value U at_FAlso, the final correction in the main correction
Value U _FSimilarly to, the dead zone in relation to the sizing device 14
The final compensation determined at the beginning of the series of supplementary
Positive value U_FIf it is in its dead zone, its final correction
Value U_FIs not sent to the sizing device 14, and the series of
The final correction value determined after the auxiliary correction is not started.
U_FThe final correction value only when is out of the dead zone.
U_FTo start executing the series of auxiliary corrections.
You can do it like this.

However, if only the above is performed, the execution timing of the main correction and the auxiliary correction does not sufficiently match the variation time of the measured value X, and the main correction and the auxiliary correction are not performed at the time when they are really necessary. There is. In order to avoid such a situation, the auxiliary correction may be performed in the following manner. That is, the final correction value U in the series of auxiliary corrections
When the sum of the plurality of final correction values U _F determined in at least the series of auxiliary corrections of the main correction and the series of auxiliary corrections is not substantially 0 when the number of determinations of _F reaches the set value. Ends the series of auxiliary corrections, but when it is substantially 0, it is estimated that at least the execution time of the auxiliary correction was not appropriate, so the auxiliary correction is continued and a new final correction value U is newly obtained. _It suffices to carry out the measurement of the number of determinations of _F starting from 0.

In this embodiment, as a method of determining the correction value, either one of the main correction without the auxiliary correction and the method of not only the main correction but the auxiliary correction is instructed by the operator. It is selected according to. That is, if the auxiliary correction command is issued, the latter method is selected, and if it is not issued, the former method is selected.

Further, in the present embodiment, as the method of the auxiliary correction, either the method of continuing the auxiliary correction or the method of not performing the auxiliary correction is selected according to the operator's instruction. There is.

Furthermore, in the present embodiment, as a method of continuing the auxiliary correction, a method of continuing the auxiliary correction in consideration of the dead zone for the first final correction value U _F of the auxiliary correction to be continued (hereinafter, " Auxiliary correction restart method ")
And a method of continuing without considering the dead zone (hereinafter, referred to as "auxiliary correction extension method") are also selected according to the operator's instruction. The command for selecting the former method is called the auxiliary correction restart command, and the command for selecting the latter method is called the auxiliary correction extension command.If neither of these commands is issued, the auxiliary correction restart command is issued. It is determined that the continuation permission command has not been issued.

Second Method of Intermittent Correction When performing the intermittent correction by the above-mentioned first method, when the standby work exists between the processing machine 10 and the total number measuring machine 16, the current correction The accumulation of the measured value X cannot be started immediately after the determination of the value U. Therefore, the time (hereinafter, referred to as “correction interval time”) required from the determination time of the current correction value U to the determination time of the next correction value U is as shown in FIG.
As shown in, the time taken for the head correction target work relating to the correction value U of this time to reach the total measuring machine 16 (related to the number of standby works existing between the processing machine 10 and the total measuring machine 16) Then, it is the sum of the time until the accumulation of the measured values X is started and the set plural measured values X are accumulated. Therefore, when it is unavoidable that a large number of standby works exist between the processing machine 10 and the total number measuring machine 16,
It is unavoidable that the correction interval time becomes long.

This second method was devised to solve this problem, and as shown conceptually in the graph of FIG. 21, successively accumulates the measured values X by the total number measuring machine 16, When the number of accumulated measured values X exceeds the set number, the latest accumulated plural measured values X are set.
The correction value U of this time is determined based on the above, and the accumulation of the measurement value X is restarted from the non-accumulation state after the determination time of the correction value U of this time (for example, immediately after the determination time of the correction value U of this time). ,
Intermediate from the restarting time to near the time when the measurement ends for the work processed only once before the top correction target work related to the current correction value U (just before, slightly before, or slightly after that) The period is determined based on the actual measurement value X of each time and the correction value U of this time every time the work is measured by the 100% measuring machine, and each work is influenced by the correction value U of this time. Predicting the values measured for each of these workpieces, assuming that they have been machined under a certain point, and using the predicted measurement values X as the actual measurement values X
It is regarded as and accumulates. In this embodiment,
As an example of the prediction, a data shift process of shifting the actual measurement value X by the current correction value U by adding the current correction value U to the actual measurement value X in the intermediate period is adopted. .

Also in the second method, as in the case of the first method, one intermittent correction includes a main correction and an auxiliary correction which can be continued with a limited number of times (this is shown in FIG. 22). (It is conceptually shown in the graph), and the concept of dead zone for the main correction and the auxiliary correction is adopted, and it is implemented as a mode in which the continuation method of the auxiliary correction can be selected. Further, in the present embodiment, it is also possible to select between the first method and the second method in accordance with the operator's instruction. Specifically, the operator gives an instruction as to whether or not to permit the data shift process, and if the data shift process is permitted, the data shift process is selected, and if not, the first method is selected.

In addition, in addition, the second method is a measurement value prediction technique, that is, the current value of at least one work piece machined under the sizing point affected by the previous correction value U. After the correction value U is determined, for each of the ones measured by the total number measuring machine 16, each work is affected by the correction value U of this time based on the actual measurement value X of each time and the correction value U of this time. It was acquired by applying the technique of predicting the measurement value to be acquired for each of these workpieces when it was processed under the sizing point that was subjected to The measurement value prediction technique can also be applied to the continuous correction.

When a standby work exists between the processing machine 10 and the total measuring machine 16, even when performing continuous correction, the work affected by the previous correction value U is immediately measured by the total measuring machine. The situation is the same that 16 cannot measure. Therefore, in this case, the correction value U of this time is determined by a statistical method based on the experimental result, the simulation result, and the like. And this measurement value prediction technique can be used instead of the statistical method.

(2) Dead time consideration type correction When the number of standby works waiting for measurement by the total number measuring machine 16 varies, even when a plurality of works are machined under the same fixed size point, The dimensional error of fluctuates. Therefore, in the present embodiment, the number of waiting works is measured as the dead time MS, and the rule for determining the correction value U is changed accordingly, so that the correction value U for each time is also considered. Has been adopted. In addition, this technology is
It is filed as Japanese Patent Application No. 4-158787 of the present applicant.

In the present embodiment, the operator also gives an instruction as to whether or not to execute this dead time consideration type correction.

(3) Determination of Correction Value U Using Fuzzy Operation The correction value U is determined by performing a fuzzy operation using the dimension information as an input variable.

In this embodiment, there are three types of methods for determining the correction value U. That is, the first determination method by the fuzzy operation using only the error value R and the differential value T as the input variables, and the second determination method by the fuzzy operation using the error value R, the differential value T and the twice-differential value D as the input variables, respectively. And the third determination method by fuzzy calculation using the error value R, the differential value T, and the dead time MS as input variables. In the present embodiment, the second determination method is used when the second differential value use command is issued, and the third determination method is used when the dead time consideration type correction command is issued. If none of the above is issued, the first decision method is selected.

A specific example of the first determination method has been already disclosed in the specification of Japanese Patent Application No. 4-61305 of the present applicant, and a specific example of the second determination method is the specific application of the present applicant. 4-235
No. 402 specification, and a specific example of the third determination method is already disclosed in Japanese Patent Application No. 4-158787 of the present applicant.

(4) Continuity Consideration As described above, since the dimensional error of the work generally increases in proportion to the number of measured works i, the continuity of the correction value U at the sizing point becomes continuous. In order to suppress the dimensional variation of the work, it is desirable to have the above, that is, to change smoothly as the processing progresses. Therefore, in the present embodiment, paying attention to the fact, as shown conceptually in the graph in FIG. 23, first, the correction value U is determined by ignoring the continuity, and the correction value U is determined by the provisional value (hereinafter, “provisional value”. Correction value U "
Say. Incidentally, the different) from the provisional correction value U _P of the foregoing, the latest M acquired by the current (2 or more fixed values)
It is assumed that the number of temporary correction values U is approximately proportional to the increase in the number of measured works i, and the same linear regression equation as the above case is specified for the M number of temporary correction values U. Then, the true value of the current correction value U using equation is estimated, it is the final value of the correction value U (hereinafter, referred to as "final correction value U ^*". Note that the final correction value U _F described above Is different). In addition, this technology is based on Japanese Patent Application No.
It has been filed as No. 61306.

Specifically, as the equation of the primary regression line, for example,

[0124]

[Equation 7]

The following equation is adopted. However, x: value of the number i of measured works x ′: average value of M x values y: true value of provisional correction value U at each value of x U: calculation of provisional correction value U at each value of x Value U ′: average of calculated values of M provisional correction values U

Then, by substituting the value of the number i of measured works for this time into "x" in the above equation, the final correction value U ^{* for} this time is obtained.

In this embodiment, the operator also gives an instruction as to whether or not to execute the continuity-aware correction.

Further, when the operator issues the continuity-aware correction command (however, when the above-mentioned twice differential value use command is not issued), the final correction value U ^* is acquired from the measured value X. The process up to this point is representatively shown conceptually in FIG. This figure is represented as the value of the measured work number i increases from the left side to the right side. As is clear from the figure, when the accumulation of the measured value X in the calculation data memory is started from the non-accumulation state, (K
+ L + M-2) one final correction value U ^* will be obtained only when the measurement values X are accumulated.
This is one mode of the above-mentioned “setting plural” relating to the accumulation of the measurement value X.

(5) Consideration of dead zone As described above, regarding the transmission of the final correction value U ^* relating to the main correction and the auxiliary correction, the dead zone in relation to the sizing device 14 is set, and the final correction value determined for each time is set. If U ^* is in the dead zone, the transmission of its final correction value U ^{* to} the sizing device 14 is omitted. This state is conceptually shown in the graph of FIG.

(6) Others When the manual correction by the sizing device 14 is performed, the control device 20 prioritizes the manual correction over the automatic correction, and the accuracy of the automatic correction is high even immediately after the manual correction. Designed to be secured. Specifically, the control device 20
Sequentially monitors whether or not the manual correction is performed in the sizing device 14, and if the manual correction is not performed, the automatic correction is performed. If the manual correction is performed, the automatic correction is interrupted and the influence of the manual correction is determined. After the time when the top correction target workpiece processed under the received sizing point is measured by the total number measuring machine 16, the measured value X
It is also designed to restart the automatic correction by restarting the storage in the calculation data memory from the non-storage state. The control unit 20 is designed to also use the past measured value X to determine the automatic correction value, and in the processing system in which the control unit 20 is used, the processing machine 10 is used.
Since it is permissible for a standby workpiece to exist between the workpiece and the total number of measuring machines 16, the measured value X of the workpiece not affected by the manual correction is distinguished from the measured value X of the affected workpiece. However, if the automatic correction value is decided based on the accumulated measurement value X, the accuracy of the automatic correction value may decrease due to the measurement value X of the work that is not affected by the manual correction. Because there is.

Further, in the present embodiment, the sizing device 14
The monitoring of the presence or absence of the manual correction is performed at the start of the control device 20 and prior to each time the control device 20 tries to transmit the automatic correction value each time. The presence or absence of manual correction in the sizing device 14 is monitored even when the control device 20 is started, because the sizing device 14 may be manually corrected while the control device 20 is stopped.

The outline of the sizing point correction by the control device 20 has been described above. The details will be described below with reference to the flowcharts of FIGS.

First, step S1 in FIG. 5 (hereinafter, simply represented by "S1". The same applies to other steps).
At, the numerical values and commands are input as parameters from the auxiliary storage device 22. Here, the “numerical value” means the value of the weighting coefficient b relating to the moving average value P, the replacement limit number Z, the auxiliary correction limit number S, etc., and the “command” means the special value. It means a moving average value calculation command or the like.

Subsequently, in S2, it is determined whether or not the sizing device 14 has a function of transmitting the latest manual correction value and the sizing point to the control device 20 (hereinafter referred to as "manual correction value transmission function"). Is determined. Here, the case of having a manual correction value transmission function means that the sizing device 14 sets the manual correction value input to the sizing device 14 by the operator through the keyboard 50 and the sizing point reflecting the manual correction value. Not only it is stored in the RAM, but it is designed to be transmitted to the control device 20 spontaneously. On the other hand, the case without the manual correction value transmission function means that the sizing device 14 has been input. This is a case in which the manual correction value and the sizing point reflecting the manual correction value are only stored in the RAM of the device itself and are not designed to be transmitted to the control device 20 spontaneously.

Since the sizing device 14 has the manual correction value transmission function as described above, the determination in S2 is YE.
S (represented by “Y” in the figure. The same applies to other steps). Therefore, the process proceeds to S3, in which the control device 20 enters a reception permission state that permits reception of a signal representing the latest sizing point from the sizing device 14, and the latest sizing point is received. The latest received sizing point is stored in the RAM of the control device 20 and also stored in the auxiliary storage device 22.

Then, in S4, R of the sizing device 14
From the state of the AM flag, it is determined whether or not there is manual correction. Assuming that there was no manual correction, the determination is NO.
Then, the process immediately proceeds to S8, but if it is assumed that the determination is YES, then in S5, the control device 20
However, the reception permitting state for permitting the reception of the signal indicating the latest manual correction value from the sizing device 14 is received, and the latest manual correction value is received. The latest received manual correction value is stored in the RAM of the control device 20, and is further stored in the auxiliary storage device 2
Stored in 2. Then, in S6, the operation data memory is cleared. With the manual correction, all the data accumulated in the calculation data memory is erased.
Then, it transfers to S8.

The case where the determination in S2 is YES has been described above, but if it is assumed that the sizing device 14 does not have the manual correction value transmitting function, the determination is NO (represented by "N" in the figure). The same applies to other steps).
Then, in S7, the control device 20 causes the sizing device 14 to
Then, the latest sizing point is read from the RAM and stored in the RAM of the control device 20, and the latest sizing point is stored in the auxiliary storage device 22.

Now, the purpose of the control device 20 to monitor the latest manual correction value and the sizing point in the sizing device 14 will be described.

First, the purpose of the control device 20 to monitor the latest sizing point will be described. The controller 20 corrects the sizing point of the sizing device 14 (the amount by which the current sizing point is changed).
Is automatically determined, and the sizing device 14 corrects its own sizing point according to the determined correction value. But,
There is a limit to the range that the sizing point can take, and when the sizing point beyond that is determined, the operation of the sizing device 14 is stopped. Therefore, in the present embodiment, the sizing device 1
The latest sizing point 4 is sequentially monitored, and if the sizing point is corrected by the automatically determined correction value and the allowable range is exceeded, the sizing device 14 for the automatic correction value is used. Sending to is prohibited. As described above, in order to prevent the sizing point of the sizing device 14 from exceeding the allowable range by one-sided automatic correction that does not consider the circumstances of the sizing device 14, the control device 20 controls the latest sizing device 14. The sizing point is monitored. The process of prohibiting the transmission of the automatic correction value when the sizing point exceeds the allowable range in the sizing device 14 is realized by executing another routine (not shown).

Next, the purpose of the controller 20 to monitor the latest manual correction value will be described. As described above, when the operator issues a data shift processing command that permits the use of the data shift processing, the control device 20 determines the processing machine 1 based on the latest measured value X by the total counting machine 16.
It is measured for each work piece which has been machined by 0 but has not yet been measured by the total counting machine 16 when it is machined under a sizing point affected by the latest correction value U. Predict the value. At this time, if the sizing point of the sizing device 14 is automatically corrected by the control device 20, the above-described prediction is performed by adding the latest automatic correction value to the latest measurement value X by the total measuring machine 16. On the other hand, in the case where the sizing device 14 itself is manually correcting, the above prediction is performed by adding the latest manual correction value to the latest measurement value X. As described above, in order for the control device 20 to predict the measured value X in consideration of the influence of the manual correction value in the sizing device 14, it is necessary to monitor the latest manual correction value in the sizing device 14. .

Whether the sizing device 14 has or does not have the manual correction value transmission function, thereafter, in S8, the measurement value X measured by the total measurement device 16 is still the total measurement device 16 It is determined whether there is any information that has not been transmitted from the control device 20 to the control device 20. This time such measured value X
Assuming that there is not, the determination is NO, and the process proceeds to S9.

In S9, similarly to S2, it is determined whether or not the sizing device 14 has a manual correction value transmitting function. Since the sizing device 14 has a manual correction value transmission function, the determination is YES, and in S10, it is determined whether or not there is a manual correction in the sizing device 14 as in S4.

Assuming that there was no manual correction this time,
The determination becomes NO, and in S11, it is determined whether or not the keyboard (not shown) connected to the control device 20 has been operated by the operator, that is, the presence or absence of key input by the operator. If not, the determination is NO and the process immediately returns to S8. If there is, the determination is YES, data is input from the keyboard in S12, and the parameter is changed according to the data in S13. The changed parameters are stored in the auxiliary storage device 22, after that, in S14, the calculation data memory is cleared, and then the process returns to S8.

On the other hand, assuming that there is manual correction this time, the determination in S10 is YES, and in S15, the latest manual correction value is received from the sizing device 14 and stored in the same manner as in S5. Then, in S16, a work waiting flag described later is turned on, and in S17, the operation data memory is cleared. Then, the process returns to S8.

On the other hand, assuming that the sizing device 14 does not have the manual correction value transmission function, the determination in S9 is N.
When it becomes O, the latest sizing point is read from the sizing device 14 in S18 and is stored in the RAM and is stored in the auxiliary storage device 22. Then, in S19, the last sizing point is read from the auxiliary storage device 22. The size is entered. Then, in S20, it is determined whether or not the current sizing point has been changed from the previous sizing point. In other words, whether or not the manual correction is performed in the sizing device that does not have the manual correction value transmission function is determined from the change state of the sizing point. Assuming there is no change in the sizing point this time,
The determination is NO, and the process immediately proceeds to S11. However, assuming that the sizing point has been changed, the determination of S20 is YES, and the work waiting flag is turned on in S21.
In S22, the operation data memory is cleared, and then the process proceeds to S11.

The case has been described above where there is no measurement value X to be transmitted by the total number measuring instrument 16, but if there is, the determination at S8 becomes YES, and at S23, the measurement value X is determined from the total number measuring instrument 16. Is entered. Measured value X
Are individually entered for all seven journal surfaces. The measured value X is accumulated in the operation data memory and is also stored in the auxiliary storage device 22, and thereafter, S2 of FIG.
Go to 4.

In S24, it is determined whether or not the operator has issued a data shift processing command based on the values of the parameters. Hereinafter, first, a case where the data shift processing command is not issued will be described.

In this case, the determination in S24 is NO and S24
At 25, it is determined whether or not the work waiting flag is ON.

This work wait flag is the first sizing point in at least one work machined under the sizing point in the sizing device 14 which is affected by the latest manual correction value or automatic correction value. Is for monitoring whether the top correction target work is measured by the total number measuring machine 16 or is waiting for the measurement. When the work waiting flag is OFF, it indicates that the head correction target work has finished the measurement, that is, it is not in the work waiting state. On the other hand, when it is ON, the head correction target work has not finished the measurement, that is, the work waiting state. Indicates that there is. This work waiting flag is provided in the RAM,
It is turned on when the power of the computer is turned on, and by the execution of another program (not shown), the OF correction is performed each time the workpiece to be head-corrected is finished by the total number measuring machine 16.
F will be done. Further, by executing this routine, it is turned on each time manual correction is performed and each time intermittent correction is completed. Assuming that the work waiting flag is not ON this time, the determination in S25 is NO and S26
Move to.

In S26, the past measured value X is input from the arithmetic data memory. Then, in S27, it is determined whether or not the current moving average value P can be calculated.
It is determined whether or not the number of measured values X stored in the arithmetic data memory is K or more. This time, assuming that the number of accumulated measurement values X is not K or more, the determination is NO, and in S28, it is determined whether or not there is a special moving average value calculation command. If not, the determination is NO, and the process immediately returns to S8. Therefore, in the present execution of this routine, the automatic correction value, that is, the final correction value U ^* is eventually set to 0.

On the other hand, if there is a special moving average value calculation command, the determination in S28 is YES, and in S29, the presence or absence of the variable moving average value calculation command is determined. If not, the determination is no and the process moves to S30. Since the variable type moving average value calculation command and the replacement type moving average value calculation command are alternative commands, if there is no variable type moving average value calculation command, there is always a replacement type moving average value calculation command. Become.

In S30, it is determined whether the replacement type moving average value can be calculated. Specifically, whether the number of measurement values X stored in the operation data memory is smaller than K (the number of measurement values X required to calculate the moving average value P in principle) -Z (replacement limit number). If not, and if so,
It is determined that the substitution type moving average value calculation is impossible (correctly, prohibited), and it is determined otherwise (correctly, permitted). If it is not possible, the process returns to S8, but if it is possible while the execution of this routine (execution of the steps after S8) is repeated many times, the determination becomes YES, and the measured value X of this time is kept as it is in S31. The moving average value P of this time is set, and it is stored in the operation data memory in S32, and
It is stored in the auxiliary storage device 22. Then, it transfers to S37.

On the other hand, if there is a variable moving average value calculation command, the determination in S29 is YES, and in S33, the moving average value P is calculated by the variable moving average value calculation method.
Is calculated and stored in the auxiliary storage device 22 while being stored in the calculation data memory in S34. Then, it transfers to S37.

After that, assuming that the number of measured values X accumulated in the arithmetic data memory becomes K or more during the execution of this routine many times, the determination in S27 becomes YES and S35. In step S36, the moving average value P is calculated in principle, and in step S36, the moving average value P is stored in the operation data memory and stored in the auxiliary storage device 22. Then, it transfers to S37.

In S37, the presence / absence of the both-ends diameter correction command is determined. If not, the determination is NO, and the process immediately proceeds to S39 in FIG. 7, but if there is, the determination is YES, and in S38, the two The both-end diameter correction is performed on the moving average value P of the end cylindrical surface, and the content of the calculation data memory is changed according to the result. Then, it transfers to S39 of FIG.

In S39, the value obtained by subtracting the target value A ₀ of the work size from the moving average value P of this time is set as the error value R of this time, and subsequently in S40, it is stored in the calculation data memory. Auxiliary storage device 22
Stored in.

Then, in S41, it is determined whether or not the differential value T can be calculated. It is determined whether or not the number of moving average values P stored in the arithmetic data memory is L or more. This time, assuming that the number of moving average values P is insufficient, the determination becomes NO, and the process proceeds to S42.
In S42, the presence / absence of the variable differential value calculation command is determined. If not, the determination is NO, the process immediately returns to S8, and the current execution of this routine ends, but if there is, the determination is YES and S43. At, it is determined whether or not the moving average value P stored in the arithmetic data memory is two or more, that is, whether or not the variable-type differential value calculation is possible. If not, the determination is NO. And immediately returns to S8, but if possible, the determination is YES, and S
In 44, the differential value T of this time is calculated by the variable differential value calculating method, and in S45, the differential value T is accumulated in the arithmetic data memory and is saved in the auxiliary storage device 22. Then, the process proceeds to S48.

After that, assuming that the number of moving average values P accumulated in the arithmetic data memory becomes L or more during the execution of this routine many times, S41
Is YES, the differential value T is calculated in principle in S46, and the differential value T is accumulated in the operation data memory and saved in the auxiliary storage device 22 in S47. Then, the process proceeds to S48.

In S48, the presence / absence of the twice-differential value use command is determined, and if there is, the determination is YES and S4
In 9, it is determined whether the differential value D can be calculated twice.
It is determined whether or not the number of differential values T accumulated in the arithmetic data memory is Q or more. This time, assuming that the number of accumulated differential values T is not equal to or more than Q, the determination becomes NO, the process immediately returns to S8, and the current execution of this routine ends. If it is assumed that the number of differential values T accumulated in the arithmetic data memory becomes Q or more during the execution of this routine many times, S4
The determination result in 9 is YES, the differential value D is calculated twice as described above in S50, and is stored in the auxiliary storage device 22 while being accumulated in the arithmetic data memory in S51. Then, it transfers to S55.

On the other hand, if there is no second differential value use command, the determination in S48 is NO, and in S52, the presence or absence of the dead time consideration type correction command is determined. If NO, the determination is NO and the process immediately proceeds to S55, but if YES, the determination is YES, and the dead time MS is input from the work number counter 18 in S53 and is stored in the arithmetic data memory in S54. , Are stored in the auxiliary storage device 22. Then, it transfers to S55.

At S55, the provisional correction value U is calculated by fuzzy calculation. There are three types of fuzzy rules for this fuzzy operation. That is, the fuzzy rule for calculating the provisional correction value U based on the error value R and the differential value T, and the double differential value without using the double differential value D and the dead time MS. Error value R and differential value T and dead time MS without using D
Based on the error value R, the differential value T, and the second differential value D without considering the dead time MS and the fuzzy rule for calculating the temporary correction value U based on
There is a fuzzy rule for calculating. Then, in this step, a fuzzy rule is selected in accordance with a command from the operator, and a fuzzy operation is performed using the fuzzy rule, among the error value R, the differential value T, the second differential value D and the dead time MS. The provisional correction value U is calculated based on what is necessary. Then, in S56,
It is stored in the operation data memory and is also stored in the auxiliary storage device 22. Then, it transfers to S57 of FIG.

In S57, the presence / absence of the continuity-aware correction command is determined. If not, the determination is NO, and S
At 58, the provisional provisional value U is unchanged and the final correction value U ^*
Then, in S59, it is stored in the auxiliary storage device 22. On the other hand, if there is the continuity consideration type correction command, the determination in S57 is YES, and in S60, it is determined whether or not the continuity consideration type correction is possible. It is determined whether or not the number of provisional correction values U stored in the calculation data memory is M or more. If it is assumed that the number of accumulated provisional correction values U is not M or more this time, the determination is NO, the process immediately returns to S8, and the current execution of this routine ends. After that, assuming that the number of provisional correction values U accumulated in the operation data memory becomes M or more during the execution of this routine many times, S
The determination of 60 is YES, and in S61, the final correction value U ^* is calculated as described above, based on the latest M provisional correction values U stored in the calculation data memory. After that, in S62, it is stored in the operation data memory and is stored in the auxiliary storage device 22.

When the execution of S59 or S62 is completed, the presence or absence of the auxiliary correction command is determined in S63 of FIG. Assuming that this time does not exist, the determination is NO, and S64
At, it is determined whether or not the final correction value U ^* at this time should be transmitted to the sizing device 14, that is, whether or not the final correction value U ^* is out of the dead zone. If it is assumed that it is within the dead zone this time, the determination is NO, and in step S65, the fuzzy rule matched in the fuzzy operation is stored in the auxiliary storage device 22. Then immediately S8
Then, the current execution of this routine ends.

On the other hand, assuming that the final correction value U ^* is out of the dead zone, the determination in S64 is YES, and in S66, it is determined whether or not the sizing device 14 has a manual correction value transmitting function. Is determined. Since it has, the determination is YES, the presence or absence of manual correction in the sizing device 14 is determined in S67, and if not, the determination is NO.
Then, in S68, the final correction value U ^* is the sizing device 1
4 is stored in the auxiliary storage device 22.
Then, in S69, it is determined whether or not there is an auxiliary correction command. Since it is assumed that this time does not exist, the determination is NO, and in S70, the matching fuzzy rule is stored in the auxiliary storage device 22 as in S65.

On the other hand, assuming that there is a manual correction in the sizing device 14, the determination in S67 is YES, and in S71, the latest manual correction value and the sizing point are received from the sizing device 14. The work waiting flag is turned on in S72, the calculation data memory is cleared in S73, and then the process returns to S8.

Assuming that the sizing device 14 does not have a manual correction value transmitting function, the determination in S66 is NO, and in S74, the latest sizing point is read from the sizing device 14, It is stored in the RAM and is also stored in the auxiliary storage device 22, and the previous sizing point is read from the RAM in S75. After that, in S76, it is determined from the previous sizing point and the latest sizing point whether or not the sizing point has been changed, that is, it is manually operated by a sizing device that does not have a manual correction value transmission function. It is determined whether or not there is a correction, and if there is no change, the determination is NO, and the process proceeds to S68, but if there is, the determination is YES, and in S77, the work waiting flag is turned ON and S
At 78, the operation data memory is cleared, and then the process returns to S8.

On the other hand, assuming that there is an auxiliary correction command, the determination in S63 is YES, and in S79, it is determined whether or not the auxiliary correction is being executed. It is determined whether or not the value of the auxiliary correction counter, which indicates the number of times of execution of the auxiliary correction, is 1 or more. If it is assumed to be 0 this time, the determination becomes NO, the process proceeds to the step group of S64 and below, and the main correction is performed. In S69 of this step group, it is determined whether or not there is an auxiliary correction command, and it is assumed that this is the case, so the determination is Y.
ES is reached, and the value of the auxiliary correction counter is incremented by 1 in S80.

On the other hand, assuming that the auxiliary correction is currently being executed and the value of the auxiliary correction counter is not 0, the determination in S79 is YES, and the process proceeds to the step group of S81 and subsequent steps to perform the auxiliary correction. Is done. In S81, this final correction value U ^* (the current provisional correction value U _P
Is obtained by subtracting the last final correction value U ^* from the previous final correction value U ^* as the current transmission value (corresponding to the current final correction value U _F ). In S82, the sizing device 14 transmits the manual correction value. It is determined whether or not it has the function. Since it has, the determination is YES, and in S83, the presence or absence of the manual correction in the sizing device 14 is determined, and if it is assumed that there is no manual correction, the determination is NO, and the transmission value is sent to the sizing device 14 in S84. Sent. Auxiliary correction is performed. After that, in S85, the transmission value is stored in the auxiliary storage device 22, the auxiliary correction counter is incremented in S86, and then the process proceeds to S80. On the other hand, assuming that there is manual correction, S83
Is YES, the manual correction value is received from the sizing device 14 in S87, the work waiting flag is turned ON in S88, the operation data memory is cleared in S89, and then the process returns to S8.

On the other hand, assuming that the sizing device 14 does not have the manual correction value transmission function, the determination in S82 is NO, and the process proceeds to the step group of S74 and subsequent steps for automatic correction. Whether or not the permission is permitted is determined, and if the permission is permitted, the automatic correction value is transmitted to the sizing device 14. Also,
In this case, the determination in S69 is YES, and in S80, the auxiliary correction counter is incremented.

Upon completion of execution of S70, S9 of FIG.
At 0, the presence or absence of the auxiliary correction command is determined. Assuming that this time does not exist, the determination is NO, the work wait flag is turned on in S91, the calculation data memory is cleared in S92, and then, in S93, the presence or absence of the data shift processing command is determined. Since it is assumed that this time is not the case, the determination is NO, and the process immediately returns to S8.

On the other hand, assuming that there is an auxiliary correction command this time, the determination in S90 is YES, and in S94, it is determined whether or not this auxiliary correction should be ended. Specifically, it is determined whether or not the current value of the auxiliary correction counter is equal to or greater than the set value (the value input from the auxiliary storage device 22 in S1 of FIG. 5). If this is not the case this time, the determination is no and the process immediately returns to S8.

After that, assuming that the current value of the auxiliary correction counter becomes equal to or greater than the set value while the execution of this routine is repeated many times, the determination in S94 becomes YES,
In S95, the sum of all correction values transmitted to the sizing device 14 in at least the current auxiliary correction of the current auxiliary correction and the main correction preceding this (hereinafter, referred to as "total correction value") is calculated. After that, in S96, it is determined whether or not the total correction value is 0, that is, it is estimated that at least the current auxiliary correction is not performed at a time when it is really necessary, and thus it is necessary to continue the current auxiliary correction. Is determined. If this is not the case this time, the determination is NO, the work wait flag is turned on in S97, the calculation data memory is cleared in S98, and the presence or absence of the data shift processing command is determined in S99. Since it is assumed that this time is not the case, the determination is NO, and the process immediately returns to S8.

On the other hand, assuming that it is necessary to continue the current auxiliary correction, the determination in S96 is YES, and in S100, it is determined whether or not the auxiliary correction restart command is issued. If it is assumed that there is an auxiliary correction extension command instead of an auxiliary correction restart command this time, the determination is NO and S10
At 1, the value of the auxiliary correction counter is set to 1, and then the process returns to S8. Therefore, at the next execution of this routine, the current value of the auxiliary correction counter is not 0,
The determination in S79 of FIG. 9 is NO, and the process proceeds to S64.

On the other hand, if it is assumed that there is an auxiliary correction extension command this time instead of an auxiliary correction extension command, the determination in S100 of FIG. 10 is YES, and the value of the auxiliary correction counter is set to 0 in S102. Then, the process returns to S8.
Therefore, at the next execution of this routine, since the current value of the auxiliary correction counter is 0, the determination in S79 of FIG. 9 becomes YES, and the process proceeds to S81.

When S25 of FIG. 6 is executed with the work waiting flag turned on, the determination is YES.
In S103, the calculation data memory is cleared in S103, and then the process returns to S8. That is, immediately after the manual correction or the automatic correction of the sizing point, S in FIG.
Despite the existence of 23, the measured value X, etc. is not actually stored in the calculation data memory, and the work piece machined under the sizing point affected by the latest manual correction or automatic correction is the first. The work waiting flag is turned off when the measurement is performed by the total number measuring device 16, and the determination in S25 of FIG.
The value becomes O, and the accumulation of the measured value X and the like in the calculation data memory is restarted.

The case where the data shift processing command is not issued has been described above. Next, the case where it is issued will be described.

In this case, the determination in S24 of FIG. 6 is YE.
It becomes S, and the process proceeds to the step group after S104. S1
At 04, it is determined whether or not the data shift process should be prohibited. Regarding the top correction target work related to the latest manual correction value or automatic correction value
When the measurement by is finished, it is no longer necessary to perform the data shift processing, and if it is performed, the error of the measurement value X increases, so in such a case, the data shift processing is prohibited.

The determination as to whether or not the measurement of the head correction target work is completed is specifically performed by the target number of data shift processes stored in the RAM (this storage will be described later), that is, the latest number. The number of workpieces existing between the processing machine 10 and the total measuring machine 16 when the manual correction value or the automatic correction value is transmitted to the sizing device 14 is measured every time the total measuring machine 16 finishes the measurement. The value is subtracted by one, and when it becomes 0 as a result, it is determined that the measurement of the head correction target work is completed.

Assuming that the measurement of the work to be corrected for the head has not been completed this time, the determination becomes NO, and S10
In 5, the latest manual correction value or automatic correction value is determined as the current shift amount, and then in S106, the current measurement value X is changed by adding the current shift value to the current measurement value X. , And is stored in the auxiliary storage device 22 while being accumulated in the arithmetic data memory. Then, in S107, the past measured value X is input from the calculation data memory, and the preparation for the calculation of the moving average value P in S27 and thereafter is performed.

Thereafter, if it is determined in S93 of FIG. 10 whether or not there is a data shift processing command, it is assumed that this is the case this time, so the determination is YES, and the dead time MS from the work number counter 18 is determined in S108. It is input, stored in the RAM as the target number of the next data shift processing, and further stored in the auxiliary storage device 22. Then, the process returns to S8.

In the same way as in the above case, the determination in S99 in the figure is also YES, and in S109 the dead time MS is input from the work number counter 18 and stored in the RAM as the target number of the next data shift process. Stored in the auxiliary storage device 22. Then, the process returns to S8.

As described above, the target number of data shift processes is performed with the end of the intermittent correction.
Although not shown in the figure, it is also performed when the manual correction is completed, and the standard value thereof is stored in the ROM in advance in preparation for the first execution of this routine.

After that, assuming that the measurement by the total number measuring machine 16 is completed for the head correction target work relating to the latest manual correction value or automatic correction value while the execution of this routine is repeated many times, FIG. The determination in S104 is Y
ES is reached, the shift amount this time is set to 0 in S110, and then the process proceeds to S106. That is, this time, the actual measured value X is directly stored in the calculation data memory.

As described above, when the data shift process is permitted, the measured value X is stored in the arithmetic data memory regardless of whether the work waiting flag is ON or OFF, and as a result, the interval of automatic correction is increased. The time gets shorter.

As is clear from the above description, in this embodiment, the processing machine 10 constitutes one aspect of the "processing machine 1" in the inventions of claims 1 and 2, and the sizing device 14 and the motor controller are included. 15 constitutes one aspect of the "processing machine control means 2", the total number measuring instrument 16 constitutes one aspect of the "measuring instrument 3", and the keyboard 50 and the sizing device 14 are operated according to the operation of the keyboard 50. The part for changing the sizing point cooperates with each other to form one mode of "manual correction means", and the part of the control device 20 for executing the sizing point correction routine of FIGS. Together with 18, it constitutes one aspect of the "automatic correction means 5".

Although one embodiment of the present invention has been described in detail with reference to the drawings, the present invention can be implemented in other modes.

For example, in the above embodiment, the moving average value P, the error value R, the differential value T, etc. are successively calculated even when the number of measured values X stored in the arithmetic data memory does not reach the set plural values. Calculated and stored in the calculation data memory,
One final correction value U ^* is determined when the number of accumulated measurement values X reaches a set number. However, when the number of accumulated measurement values X does not reach the set number, the moving average value P or the like is not calculated at all, and when the number of accumulated measurement values X reaches the set number. For the first time, the present invention can be implemented by collectively calculating the moving average values P and the like to determine one final correction value U ^* .

Further, in the above-mentioned embodiment, the crankshaft is used as the work, and a plurality of journal surfaces (outer peripheral cylindrical surface) of the work are used.
This is an example of the case where the present invention is applied to a sizing point correction device used together with a processing system that performs cylindrical grinding as each processing portion. However, the present invention is applied to a sizing point correction device used with other processing systems. Of course, it can be applied. Other machining systems include, for example, a cylinder block of an automobile engine as a workpiece to be machined,
It is possible to select a processing system in which a plurality of cylinder bores (inner circumferential cylindrical surface) formed in advance as the processing parts are honed.

Further, the above embodiment is also an example of the case where the present invention is applied to a machining system for machining a work in which a plurality of machining sites are set, but machining in which only one machining site is set. Of course, it can be applied to the system.

Further, the above-mentioned embodiment is a processing system for processing a work in which a plurality of processing parts are set, and the present invention is applied to a system in which an in-process measuring machine is not provided for all the processing parts. This is also an example of the case, but it goes without saying that the present invention can be applied to a processing system including an in-process measuring machine for all of those processing parts.

Besides the above, the present invention can be implemented in various modified and improved modes based on the knowledge of those skilled in the art without departing from the scope of the claims.

[Brief description of drawings]

FIG. 1 is a diagram conceptually showing the structure of each invention of claims 1 and 2. FIG.

FIG. 2 is a perspective view showing a state in which a crankshaft is ground by a grindstone in a processing system used with a feedback type fixed dimension correction device which is an embodiment common to the inventions of claims 1 and 2.

FIG. 3 is a system diagram showing the entire processing system.

FIG. 4 is a diagram showing a configuration of a processing machine in the processing system.

5 is a flowchart showing a part of a fixed-point correction routine executed by a computer of control device 20 in FIG.

FIG. 6 is a flowchart showing another part of the sizing point correction routine.

FIG. 7 is a flowchart showing still another part of the sizing point correction routine.

FIG. 8 is a flow chart showing still another part of the sizing point correction routine.

FIG. 9 is a flowchart showing still another part of the sizing point correction routine.

FIG. 10 is a flowchart showing still another part of the sizing point correction routine.

FIG. 11 is a diagram conceptually showing the overall flow of the processing of the sizing point correction routine.

FIG. 12 is a graph conceptually showing the content of removal of variation between adjacent portions in FIG.

FIG. 13 is a diagram for explaining an example of removal of variation between adjacent portions.

FIG. 14 is a diagram for explaining an example in which an example of removal of variation between adjacent portions in FIG. 13 is improved.

FIG. 15 is a diagram for explaining an example of a further improved example of removing the variation between adjacent portions in FIG.

16 is a graph conceptually showing the contents of both-ends diameter correction in FIG.

17 is a graph conceptually showing a method of calculating a differential value T from an error value R in obtaining the dimension information in FIG.

FIG. 18 is a graph conceptually showing intermittent correction which is one method of fixed-point correction.

FIG. 19 is a graph conceptually showing the first intermittent correction method.

FIG. 20 is a graph conceptually showing one embodiment of the first system.

FIG. 21 is a graph conceptually showing a second method of intermittent correction in FIG.

FIG. 22 is a graph conceptually showing one embodiment of the second method.

23 is a graph conceptually showing the content of consideration of continuity in FIG. 11. FIG.

FIG. 24 is a diagram for explaining an example of a process of deriving a final correction value U ^* from the measurement value X in the sizing point correction routine of FIGS.

FIG. 25 is a graph conceptually showing the content of dead zone consideration in FIG. 11.

[Explanation of symbols]

 10 processing machine 12 in-process measuring machine 14 sizing device 15 motor controller 16 total number measuring machine 20 controller 44 post-process measuring machine 50 keyboard

Claims (2)

[Claims] 1. A processing machine for sequentially processing each of a plurality of workpieces, and (b) processing conditions of the processing machine are determined based on a correction value supplied from the outside, and the processing conditions are determined according to the determined processing conditions. Processing machine control means for controlling the processing machine, and (c) those processing machine control means and measuring machine of a processing system including a measuring machine for sequentially measuring the dimensions of each of a plurality of workpieces processed by the processing machine A feedback type machining condition correction device to be connected to and used for determining the correction value of the machining condition of the workpiece to be machined next by the processing machine as a manual correction value based on the operator's command. Then, based on the measurement value by the measuring machine and the manual correction means for performing the manual correction to be supplied to the processing machine control means, the correction value of the processing condition of the work to be processed next by the processing machine is automatically corrected. As Next, the automatic correction is determined and supplied to the processing machine control means. If the manual correction means performs the manual correction, the automatic correction is interrupted, and the manual correction means supplies the automatic correction to the processing machine control means. Feedback type machining condition correction device, comprising: automatic correction means for restarting automatic correction after the time when the workpiece machined according to the machining conditions affected by the manual correction value is measured by the measuring machine. . 2. The automatic correction means successively accumulates the measurement values by the measuring machine, and successively determines the automatic correction values based not only on the latest measurement value but also on the accumulated past measurement values. The automatic correction supplied to the processing machine control means is performed, and if the manual correction means performs the manual correction, the automatic correction is interrupted, and the manual correction value supplied from the manual correction means to the processing machine control means. 2. The automatic correction is restarted by restarting the accumulation of the measured values from the non-accumulated state after the time when the workpiece machined according to the machining conditions affected by is measured by the measuring machine. Feedback type processing condition correction device.