JPH0899251A - Grinder - Google Patents

Abstract

PURPOSE: To carry out grinding work only for positions to be processed by inputting processing data obtained from a grinding system to be employed and a finishing diameter and both end positions, and mounting a processing means which moves a grinding wheel relatively to the position to be processed for grinding work. CONSTITUTION: This grinder is provided with a grinding system inputting means 52 for inputting a grinding system to be employed for one position to be processed in a workpiece W, a finishing diameter inputting means 52 for inputting the finishing diameter of the position to be processed, and an automatic decision means 45 for deciding processing data automatically from the grinding system and the finishing diameter. Based on the processing data and both end positions, grinding work is carried out with a processing means by moving a grinding wheel 16 relatively to the position to be processed. After processing of the position to be processed has been completed, the position to be processed is transferred to another position to be processed by a processed position transferring means.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grinding apparatus which facilitates input of data necessary for machining a work.

[0002]

2. Description of the Related Art Conventionally, in order to machine a work having a plurality of machining points, actual machining is started after performing various operations such as inputting shape data. Figure 12
This figure shows the outline from the input operation of this shape data to the actual grinding process. First, the operator inputs shape data for specifying the shape of the work on the keyboard provided on the operation panel based on the design drawing of the work. The input of this shape data is input for all of the plurality of processing points to be processed. The shape data input here includes, for example, data such as a grinding method, a finishing diameter, a machining allowance, and a width of a processing location for one processing location (step 500). When the input of the shape data is completed, the NC control device of the grinding device automatically determines the processing data necessary for processing from the shape data. Next, the operator confirms whether or not the automatically determined machining data is correct (step 502). This confirmation work is mainly to determine whether or not the workpiece and the grindstone interfere with each other on the machining data during machining, and it is based on the machining data and the case of judging from the numerical value of the machining data displayed on the screen. It may be judged from the simulation image.

When the work of confirming the processed data is completed,
The operator then sets the coordinates (step 504). In this work, the position of the grindstone is actually stored by bringing the grindstone into contact with the working part of the work, and the coordinate relationship between the grindstone and the work is stored by inputting the diameter of the working part. When the above work is completed, a test cycle is performed (step 506). In this test cycle, the table on which the work is placed and the grindstone head are actually moved based on the processing data to check whether or not the processing path is accurate. This time,
The grindstone moves at a position offset by a predetermined amount from the actual machining path with respect to the work. After execution of this test cycle, trial grinding is performed unless there is any particular problem (step 5).
08). In this trial grinding, the workpiece is machined based on the machining data as in the actual machining. Then, the operator confirms the dimensions of the processed work by this trial grinding. As a result, if the processed size is the desired size, it is determined that the processed data was correct.
If the dimension of the machined work is not appropriate, the coordinate value set in step 504 is corrected based on the error between the measured value and the finished diameter. Or step 50
Correct the processing data of 2.

The actual machining of the work is started only when the result of the trial grinding becomes appropriate (step 5).
10).

[0005]

As described above, in the procedure from the processing data input operation to the actual grinding processing, each process proceeds serially. At this time, each process cannot proceed to the next process until it is confirmed that there is no abnormality. Therefore, it is necessary to confirm that the processing data is correct for each process, and it is necessary to correct it if necessary. Therefore, in this way,
It takes a long time before the actual machining is executed, which imposes a heavy burden on the operator. In particular, in such a method, when a large number of kinds of workpieces are machined in a small amount, the ratio of the machining data determination time to the actual machining time becomes large, which causes a decrease in productivity. Also,
In the case of a work having a plurality of processing points, step 50
The processing data must be completed by inputting the shape data of all the processing points with 0. In this way,
In some cases, data input may be made even for a part that does not need to be machined for the time being, and such a problem is particularly remarkable in the case of a work having a plurality of machined parts.

If the positional relationship between the grindstone and the work is improper, there is a risk that not only the machining of the work will be defective but also a serious accident will occur. Therefore, in the above method, the confirmation of the machining data on the screen of step 502,
The positional relationship of the work is determined in two steps of the test cycle of step 506. However, such a method has a problem that it takes time and is not suitable for high-mix low-volume production in the same manner as the above-mentioned problems.

The present invention has been made in order to solve the problems as described above, and makes it possible to easily prepare machining data and easily confirm the positional relationship between the grindstone and the workpiece. An object of the present invention is to provide a grinding device suitable for small-quantity production.

[0008]

As a means for achieving the above-mentioned object, the present invention has means for moving a grindstone relative to a work as means for achieving the above-mentioned object. In the grinding device for processing the outer circumference of the work by moving the whetstone relatively to the work by means of a whetstone moving means,
Grinding method input means for inputting a grinding method for grinding to one processing location, finishing diameter input means for inputting a finishing diameter of the processing location, and machining data are automatically determined from the grinding method and the finishing diameter. By automatically determining means, by positioning the grindstone at both end positions of the processing location, both end position input means for inputting both end positions of the processing location, based on the processing data and the both end positions,
Processing means for performing grinding by moving the grindstone relative to the processing location, and processing for moving the target processing location to another processing location after processing of the processing location is completed by this processing means And a location transfer means.

The means described in claim 2 has a grindstone moving means for moving the grindstone relatively to the work, and the grindstone moving means relatively advances the grindstone with respect to the work. In the grinding device for processing the outer circumference of the work based on at least two grinding steps, a grinding method input means for inputting a grinding method for performing grinding processing for one processing location on the work, and the processing location. Finishing diameter input means for inputting the finishing diameter, automatic determining means for automatically determining processing data from the grinding method and the finishing diameter, and by positioning the grindstone at both end positions of the processing location, the processing location Both end position input means for inputting both end positions of the whetstone and the whetstone with respect to the processing location based on the processing data and the both end positions. A first processing means for performing only the first grinding step of the grinding step by moving the grinding step, and a target processing point after the first grinding step is finished by the first processing means. And a second processing means for starting processing of the second grinding step of each processing location after the first grinding step of all target processing locations is completed. Be prepared.

[0010]

The means described in claim 1 determines the processing data by inputting the grinding method and the finishing diameter only for the processing portion having the work. Then, by actually positioning the grindstone at the processing location, both end positions where the grindstone moves are input. With this, based on the machining data and both end positions,
Grinding of this processing location is performed.

The means described in claim 2 determines the processing data by first inputting the grinding method and the finishing diameter only for the processing location where the work is present. Then, by actually positioning the grindstone at the processing location, both end positions where the grindstone moves are input. Thus, based on the processing data and the positions of both ends, after performing the grinding process of the first grinding process of this processing site, the process moves to the next processing site and similarly the grinding process of the first grinding process is performed. Then, when the first grinding step of all the processing locations is completed, the grinding processing of the second processing location of each processing location is started.

[0012]

Embodiments of the present invention will be described with reference to the drawings. In FIG. 1, reference numeral 10 denotes a bed, and a table 11 is guided and supported by the bed 10 so as to be movable in the horizontal direction (Z direction). A headstock 13 and a tailstock 14 are installed on the table 11 so as to face each other. The headstock 13 is provided with a chuck 13 a for gripping one end of the work W, and the tailstock 14 includes other parts of the work W. A center 14a for supporting the ends in the center is provided. This makes the headstock 1
The work W is supported by both ends of the work W and the tailstock 14 so that the rotation axis of the work W is parallel to the horizontal movement direction of the table 11, and the work W is rotationally driven by the headstock 13. Further, a grindstone 16 is provided on the headstock 13.
A dress 13b for correcting the (tool) is attached. The work W in this embodiment is a multi-step work having a plurality of cylindrical steps (hereinafter simply referred to as steps) W1, W2, W3 as shown in FIG.

A grindstone base 15 is guided and supported on the bed 10 in a horizontal direction (X direction) orthogonal to the moving direction of the table 10, and the grindstone 16 is mounted on the grindstone base 15 about an axis line parallel to the moving direction of the table 11. It is rotatably supported by.
The grindstone 16 is rotationally driven by a grindstone driving motor 17 via a pulley and a belt (not shown).
The table 11 is moved by the servo motor 21 provided on the bed 10, and the grindstone 15 is moved by the servo motor 22 provided on the bed 10. In addition, each servo motor 21,
Encoders 61 and 62 are attached to 22 respectively.

Next, the numerical controller 40 will be described.
The numerical controller 40 is composed of a central processing unit (CPU) 45, a memory 44, and interfaces 46 and 47. A control panel 50 for inputting control parameters and NC programs required for NC control to the interface 46.
Are connected. The operation panel 50 includes a display 51,
Individual operation start button 55, automatic operation start button 56, position memory button 57, drive-in grinding button 58, which will be described later.
A table index button 59, a next-stage input button 60, a keyboard 52 having various input buttons, a handle 53 for manually feeding the grindstone 15, X, Z of the handle 53
A direction switching button 54 for switching the direction is attached. The handle 53 is connected to a pulse generator in the operation panel 50 and generates a pulse according to the number of rotations of the handle 53. Therefore, when the direction switching button 54 is in the X direction, the grindstone 15 is manually fed by the handle 53, and when the direction switching button 54 is in the Z direction, the table 53 is manually fed by the handle 53. It has become.

Further, servo motor drive circuits (DU) 41 and 42 are connected to the interface 47. The servo motor drive circuits 41, 42 are circuits for inputting a command from the central processing unit 45 and driving the servo motors 21, 22. In addition, the servo motor drive circuits 41, 4
The current positions of the table 11 and the whetstone base 15 detected by the encoders 61 and 62 are fed back to 2. The memory 44 is provided with a data area for storing shape data input from the operation panel 50, automatically determined machining data, and the like, and a program area for storing various programs such as a program to be described later and an intermediate dress program. ing.

The operation of this embodiment will be described based on the above configuration. 8, 9 and 10 are flowcharts of this embodiment. In the grinding process of this embodiment, each step is divided into several patterns depending on the operator's request. That is, the operation system is divided into individual operation determined in step 112 and automatic operation. The types of grinding are classified into normal grinding determined in step 142 and drive-in grinding. The grinding apparatus of the present embodiment is capable of performing various types of processing by variously combining such an operation system and the type of grinding.

Explaining the operation system, the individual operation means that two grinding processes consisting of rough grinding (first grinding process) and fine grinding (second grinding process) are interrupted for each grinding process. Grinding is performed. That is, the individual operation is started by the individual operation start button 55, and the processing is interrupted when only the rough grinding is completed. Next, when it is desired to perform fine grinding, both the table indexing button 59 and the individual operation start button 55 are pressed to start processing. That is, when performing the rough grinding of each stage of one work or the same stage of the same type of work, only the individual operation start button 55 is pressed. Further, when performing fine grinding of each stage of one work or fine grinding of the same stage of the same type of work, both the individual operation start button 55 and the table indexing button 59 are pressed.

Explaining the types of grinding, in the case of the present embodiment, the term "normal grinding" refers to an oversize amount, which will be described later, by two grinding steps up to a finishing diameter input by an operator, rough grinding and fine grinding. It is a method that grinds up to the fine grinding start diameter and the finish diameter without doing so. Note that the grinding process is not limited to the two steps of rough grinding and fine grinding as described above, and may be divided into three steps such as rough grinding, fine grinding, and fine grinding, and if necessary, 1 step may be performed. It may be divided into only one grinding process or four or more grinding processes. In addition, drive-in grinding is a case where high dimensional accuracy is required,
As shown in FIG. 5, after the workpiece W is once ground to an outer diameter dimension obtained by adding the oversize amount d to the finished diameter D, the finished diameter D
And the present diameter is measured, and the remaining amount is ground as the drive-in amount T.

Next, each step of FIGS. 8, 9 and 10 will be described. The data input work for the processing of this embodiment is
By inputting only the shape data of the step W1 of the work W to be processed, the step W1 can be immediately processed. Then, after the machining of the stage W1 is performed, the stage W
If it is necessary to process 2 and W3, data can be sequentially added to process steps W2 and W3. First, in step 100, the work of inputting the work shape data by the worker is started. In step 102, the rigidity is input. This rigidity is input while looking at the screen displayed on the display 51 of the operation panel 50. That is, as shown in FIG. 2B, the operator selects the rigidity of the work, which is considered to be most suitable from the shape of the work to be processed, from large, medium, and small, and inputs it from the keyboard 52. Note that the rigidity may be input by directly inputting a numerical value. Next, the operator inputs the grinding method from the keyboard 52 on the screen displayed on the display 51 in step 104. This is 1. Plunge grinding, 2. Traverse grinding, 3. Plunge traverse grinding, and 4. It is selected from shoulder grinding (end surface grinding). In this case, for example, traverse grinding of 2 is selected (FIG. 3 (c)).

Next, at step 106, the finishing diameter (diameter) of the stage W1 of the workpiece to be machined is inputted (FIG. 3 (d)). In this case, the diameter 28 (mm) is input. The input of the shape data is completed by the above process. In step 108, processing data is automatically determined based on the shape data input up to step 106. That is, processing data such as the rigidity of the work, the grinding method, and the finishing diameter, the diameter of the work when the fine grinding is started, the fine grinding start diameter, the grinding speed in the rough grinding and the fine grinding, the number of traverses, etc. are determined. .

In step 110, the width of the step W1 to be processed is input. The width of the step W1 is input by the operator in a simple and reliable manner by actually positioning the grindstone 16 at both ends of the step W1 with the handle 53. That is, as shown in FIG. 3E, when the operator positions the grindstone 16 on one end side of the step W1 (position of the grindstone 16a), the operator presses the position storage button 57. The position of one end of the stage W1 from the reference position is calculated from the value of the encoder 61 at this time and stored in the memory 44. Then, similarly, the grindstone 16 is positioned on the other end side of the step W1, and the position storage button 57 is pressed again at that position (position of the grindstone 16b). This stores the position of the other end. Then, when the processing is performed, the grindstone 16 moves between the both end positions where the position storage button 57 is pressed to perform the traverse grinding.
In this case, the position of 75 (mm) from the reference position and 22
The position of 0 (mm) is automatically input. The reason for actually positioning the grindstone 16 on the work W in this manner is not only to facilitate the input of the work size but also to make the work W and the grindstone 1
It also has the meaning of confirming the interference with 6.

When the above steps are completed, the work W is actually ground. At this time, the operator selects, as described above, whether to perform the machining by the individual operation or the automatic operation. In step 112,
When the individual operation start button 55 is pressed and each individual operation is selected (YES), step 114 is executed to execute each individual operation.
Move to. If the automatic operation start button 56 is pressed and the automatic grinding is performed (NO), the process proceeds to step 122 (FIG. 9).

First, the individual operation will be described. The individual operation is an operation method in which each individual operation start button 55 is pressed as described above, and the process is shifted to the next machining step. When the first work W is ground while inputting shape data,
This driving method is suitable. In step 114, it is determined whether or not the table index button 59 is pressed before the individual operation start button 55 is pressed. The table index button 59 is a button for moving the table 11 to the next processing position, and this button is pressed when shifting from rough grinding to fine grinding. That is, as will be described later, when the rough grinding of the step W2 which is the second processing point is completed and the fine grinding of the step W1 which is the first processing point is performed, this table indexing button 59 is pressed, After moving the position of the whetstone 16 from the step W2 to the step W1 (step 11
8), by pressing the individual operation start button 55, the step W
1 fine grinding is started. Further, when it is desired to continue fine grinding by individual operation after the rough grinding of the step W1 is finished, the table indexing button 5 is pressed after the rough grinding is finished.
By pressing 9 and then the individual operation start button 55, the fine grinding of the stage W1 is executed. However, in this case, the table 11 is not actually moved in step 118.

Therefore, if it is determined in step 114 that the table index button 59 is pressed (Y
ES), after moving to step 118 to move the table 11 to the next processing stage, in step 120, fine grinding of the next grinding process is performed. If it is determined that the table index button 59 is not pressed (NO), step 116.
Then, the rough grinding of the stage for which the current machining data was created is performed. This rough grinding step 116 and fine grinding step 1
As described above, 20 may be a case of normal grinding or a case of drive-in grinding. In the following, first, only normal grinding will be described, and in the case of drive-in grinding, it will be described later with reference to FIG.

In step 114, when machining the step W1 of the first work W for which the shape data has been input,
Of course, since the rough grinding of the step W1 is performed first, the table index button 59 is not pressed, and after the rough grinding of the step W1 is executed in step 116, step 132 is performed.
(FIG. 2 (f)). In step 132, it is determined whether or not to input the shape data of the next processed portion.
That is, when inputting the shape data of the step W2 which is the next processing location, the operator presses the next step input button 60. If the next-stage input button 60 is pressed (YES),
In step 104, the shape data of the step W2, which is the next processing point, is input. However, in this case, it is sufficient to input the rigidity once for the same work, so step 1
02 is omitted. If the next-stage input button 60 is not pressed and the individual operation start button 55 or the automatic operation start button 56 is pressed (NO), the process returns to step 112. In this way, the shape data of a plurality of processing points is input by each operation. That is, in the case of processing only the stage W1 by individual operation, the procedure is as follows. As shown in FIG. 3A, in the first step 112, the individual operation start button 55 is pressed. This time,
Since the rough grinding of the step W1 is performed, step 114 becomes NO and the rough grinding of the step W1 is executed. And then W
In order to perform the fine grinding of No. 1, the operator presses the table index button 59 and then the individual operation start button 55 again. That is, step 132 is NO and steps 112 and 114 for the second time are YES. This makes the stage W
Processing of 1 is completed by each individual operation. Incidentally, when shifting from rough grinding to fine grinding in each individual operation, the work is manually started by performing intermediate dressing work of the grindstone 16 after rough grinding and then fine grinding.

Next, the case of inputting the shape data of the stages W1 and W2 and performing individual operation will be described with reference to the diagram showing the work process of FIG. In this case, as shown in FIG. 3B, first, only the rough grinding of the step W1 and the step W2 is performed first, so that the number of intermediate dresses can be reduced and efficient machining can be performed. That is, after the machining data of the step W1 is created (FIG. 9A) and after the rough grinding of the step W1 is completed (FIG. 9B), the next step input button 60 is pressed to set YES at step 132, and the step W2 The shape data is input to create processing data (FIG. 9C). Then, by setting YES in step 112 and NO in step 114, rough grinding of the step W2 is performed (FIG. 9 (D)). Here, after the intermediate dress program is executed by manual activation (FIG. 9 (E)), the table index button 59 is displayed.
Press to move the position of the grindstone 16 from the position of the step W2 to the position of the step W1. In this case, since the position of the step W1 is stored in the memory 44 in the first step 110,
The table is indexed automatically. Then, the worker pushes the individual operation start button 55. As a result, step 132 becomes NO and steps 112 and 114 become YE.
S, and fine grinding of the step W1 is executed (FIG. 9).
(F)). After that, similarly, after pressing the table index button 59 and then the individual operation start button 55,
The fine grinding of the stage W2 is executed (FIG. 9 (G)).

As described above, the shape data of the work W is input and processed first, but from the second, the automatic operation shown below is selected in step 112 to sequentially process the created work data. Processing is executed. If the automatic operation start button 56 is pressed in step 112, the process proceeds to step 122. Step 122
Then, based on the processing data created up to now, the next processing location and its grinding process are determined. Then, it is judged whether or not the next grinding step is the fine grinding and the first fine grinding which shifts from the rough grinding to the fine grinding. When it is determined in step 124 that the first fine grinding is performed (YES), the process proceeds to step 126 to perform intermediate dressing, and then the process proceeds to step 128. Step 124
If it is judged that it is not the first fine grinding (N
O), the process directly goes to step 128. Step 128
Then, the processing of the next grinding process determined in step 122 is executed. When the processing of this grinding process is completed,
In step 130, it is determined whether the currently processed grinding process is the final grinding process. That is, if it is the final grinding step (YES), the process proceeds to step 132. If it is not the final grinding process (NO), the process moves to step 122 to execute the next grinding process.

Although the automatic operation is executed by the above steps, the execution sequence of each grinding process is basically set to be the same as that of the individual operation. That is, the order in which the processed data was created is stored in the memory 44 and is executed based on this. However, this processing order is stored in an area different from the processing data so that the processing data does not need to be changed even if the processing order is changed, and when the processing is executed, the processing order is sequentially read out. At the same time, the processing data of that stage is read and the processing is executed. That is, when the processed data of only the stage W1 is created,
After the rough grinding of the step W1 is performed as shown in (a), an intermediate dressing is performed, and the fine grinding of the latter step W2 is performed. Further, when processing data of a plurality of steps such as step W1 and step W2 are created, as shown in FIG. 3B, first, all rough grinding is performed, and then an intermediate dress is performed. After that, all fine grinding is performed. That is, the operator creates the processing data of the step W1 and performs the rough grinding as described above, and then creates the processing data of the step W2 and performs the rough grinding. The processing order is automatically set in the order of the rough grinding of the step W1, the rough grinding of the step W2, the fine grinding of the step W1, and the fine grinding of the step W2 according to the creation order of this processing data. FIG. 6 shows three processing points W1, W2 and W3.
It shows the process when the automatic operation is started after inputting the shape data. As described above, according to this embodiment, after the shape data is sequentially input, all the processing points input by the automatic operation can be continuously processed. In this example, the grinding method for the steps W2 and W3 is plunge grinding. When the grinding method is input to each stage in this way, each grinding method can be displayed based on the contents of the memory 44 as shown in the area of FIG. 4B.

Also in this automatic operation, the shape data of a new processing location can be input by shifting to step 132 after all the processing is once completed. For example, when the operator finishes the machining of the stage W1 by the automatic operation and wants to perform the process of the stage W2 for which the machining data has not been created yet, by pressing the next-stage input button 60 after the automatic operation ends The step W2 can be processed by inputting the shape data of W2.

Further, according to this embodiment, it is also possible to perform the processing by combining the individual operation and the automatic operation. That is, in the case of machining the stage W1 and the stage W2 by the individual operation described above, in the case of performing the fine grinding shown in FIGS. 9 (F) and 9 (G),
By pressing both the table index button 59 and the individual operation start button 55, fine grinding is performed by individual operation. However, after the rough grinding has been executed, the creation of the machining data has been completed, and it has been confirmed to some extent that the machining data was correctly created by each operation of the rough grinding. Therefore, after rough grinding is completed, step 1
By selecting automatic operation at 12,
Fine grinding of the remaining stages W1 and W2 corresponding to (G) can be performed by automatic operation. As a result, it is possible to more quickly perform processing from creation of processing data on the first work W to processing.

Next, FIG. 4 and FIG.
Will be described with reference to. As described above, the drive-in grinding is to grind the finish diameter D (currently the fine grinding start diameter in the case of rough grinding) of the workpiece W to the outer diameter dimension after adding the oversize amount d, and then finish diameter D and the current diameter. And the difference between
The remaining amount is ground as the driving amount T.
Whether or not this follow-up grinding is performed can be arbitrarily set by the operator in the process of inputting the shape data up to step 106. That is, FIG.
The data input screen shown in can be displayed.
The follow-up grinding can be set by moving the cursor to a desired step position in the area for setting the presence or absence of the follow-up grinding shown in the area c of this screen and setting the flag 1 using the follow-up grinding button 58. That is, the drive-in grinding can be set for each of the rough grinding and the fine grinding, and in the step W1 (No. 1) shown in FIG.
Since the flag is 0 for rough grinding, the follow-up grinding is not performed, and since the flag is 1 for fine grinding, the follow-up grinding is set to be performed.

The drive-in grinding set in this way is discriminated and executed in the rough grinding and the fine grinding in steps 116 and 120 described above. Since this process is basically the same, both of them will be described using the flowchart of FIG. When step 116 or step 120 is started, step 140 and subsequent steps are started. In step 142, it is determined whether normal grinding or drive-in grinding is performed. As described above, if it is set that the grinding to be performed from now on is the follow-up grinding (YES), the flow proceeds to step 144 to execute the follow-up grinding. If the grinding is normal (NO), the process proceeds to step 152, and the above-described normal grinding is performed.

In step 144, it is determined whether or not the drive-in amount T has been input. That is, if the drive-in amount T is input (YES), the process proceeds to step 148, and if the drive-in amount T is not input (N).
O), and shifts to step 146. This drive-in amount T
Is input by the operator using the keyboard 52.
Normally, in the first machining, since the rough grinding is performed up to the preset oversize amount d as the target position, the drive-in amount T is not set. Therefore, in step 146, grinding is performed up to the oversize amount d (FIG. 5A).

When the grinding to the oversize amount d is completed, the process proceeds to step 154 and returns to step 132 in FIG. That is, when inputting the shape data of the step W2 which is the next processing location, the operator presses the next step input button 60. If the next-step input button 60 is pressed (YES), the process proceeds to step 104 to input the shape data of the step W2 which is the next processing location. If the next-stage input button 60 is not pressed and the individual operation start button 55 is pressed again (NO), the process returns to step 140. Although it is possible that the automatic operation start button 56 is pressed at this time, it is not common to automatically operate the following machining during drive-in grinding, so here, when the individual operation start button 55 is pressed. Will be described.

At the present moment, when the rough grinding up to the oversize amount d is completed in step 146 described above,
The operator measures the diameter of the currently processed step W1. By this measurement, the difference (corresponding to the radius) between the finished diameter D and the current diameter can be known. This measured value is input as the pushing amount T from the keyboard 52 (when the grinding device is in an ideal state, the pushing amount T = oversize amount d). Then, the individual operation start button 56 is pressed again. That is, step 132 becomes NO and steps 142 and 14 for the second time are performed.
4 is YES. Therefore, the process proceeds to step 148, and the amount of grinding T is ground. When step 148 ends, the drive-in amount T is cleared in step 150, and the process proceeds to step 154.

In this state, the operator again measures the diameter of the step W1. If an appropriate diameter is obtained by this, the next stage W
When inputting 2, the next-stage input button 60 is pressed to move to step 104. Further, when processing the step W1 of the same type of work W, the work W may be exchanged by another operation and the step T and subsequent steps may be repeated without inputting the drive-in amount T.

On the other hand, if the proper diameter is not obtained even after the follow-up grinding, the follow-up grinding may be performed a plurality of times by inputting the follow-up amount T'and pressing the automatic operation start button 56. It is possible (Fig. 5 (b)). In the drive-in grinding described above, the first processing is automatically performed up to the oversize amount d. But in some cases,
It is also possible to perform the first machining manually without using the oversize amount d. In this case, after inputting both end positions in step 110, manual grinding is performed with the handle 53. In this manual grinding, it is necessary to leave an amount equivalent to the oversize amount d from the finish diameter D. In this state, the operator measures the diameter of the work W, obtains the amount of drive-in T, and inputs it. In this state, each individual operation start button 5
Pressing 5 also activates steps 144, 148, and 150. By combining manual grinding in this way, it is possible to perform precise grinding using the skill of a skilled worker.

Further, the drive-in grinding is effective for confirming the coordinate setting of the grindstone 16 and the work W. That is, the difference between the oversize amount d and the drive-in amount T is
This is considered to be based on the coordinate error between 6 and the work W. Therefore, when the next stage or the work W is processed, this error amount may be input from the keyboard 52 to correct the processing data. Therefore, the conventional coordinate setting becomes unnecessary. Moreover, even if such a coordinate error occurs in the first work, by setting the drive-in amount T, the coordinate error can be corrected and processed. Therefore, the first work is not wasted. Note that such correction of coordinates can be performed in the following cases. That is,
The fine grinding start diameter or the finishing diameter at which the processing is temporarily finished is displayed on the display 51 as a target value. Since the error between this target value and the diameter actually measured when the processing is completed is the coordinate error, the coordinate can be corrected using this error.

The grinding apparatus of this embodiment has a structure in which not only the above-described input of shape data to machining can be performed quickly by a simple operation, but also the grinding order of each stage can be easily changed. When the processing data is set in the order of the stages W1, W2, W3 as described above, the processing order as shown in FIG. 7A is determined. This processing order is stored in the memory 44 separately from the processing data, and this data is displayed as shown in the area d of FIG.

In the present embodiment, the grinding order can be changed by moving the cursor to the position of this area d. That is, when the grinding process of the step W1 is to be one process of only rough grinding, 4 in the region d is set to 0. Then, when it is desired to set the grinding order to stages W1, W3, W2, that is, as shown in FIG. 7B, 3 is set to 2 and 2
The grinding order is changed by setting 3 to 3, 6 to 5, and 5 to 4. When performing the automatic grinding next time, the grinding device performs the grinding according to the newly set grinding order. As described above, the grinding apparatus of this embodiment has a feature that the grinding order can be easily changed.

[0041]

The means described in claim 1 determines the processing data by inputting the grinding method and the finishing diameter only for the processing location where the work is present, and enables the grinding processing only at the processing location. Therefore, it is possible to perform the grinding processing of the necessary parts without inputting the shape data at all the processing parts. For this reason, since it is possible to create the machining data only for the necessary portions and execute the machining, the machining can be performed easily and quickly. Also, since both ends of the whetstone move are entered by actually positioning the whetstone at the machining location, it can be confirmed at this point that the whetstone interferes with the workpiece. No need to cycle. Further, since it is possible to process only a certain processing location first, rather than all processing locations, it is possible to obtain and correct a coordinate error from the difference between the dimension after processing and the target finishing diameter. Therefore, since the coordinates of the next processing can be corrected, it is not necessary to set the coordinates for bringing the grindstone and the workpiece into contact with each other as in the conventional case. Therefore, the grinding time can be shortened. As described above, according to the present invention, it is possible to provide a grinding machine suitable for high-mix low-volume production because the process from the input of shape data to the processing can be performed quickly and the work such as test cycle and coordinate setting can be omitted.

The means described in claim 2 makes it possible to execute the second machining step after first machining the first machining step of all the machining points. It is possible to reduce the number of intermediate dresses to correct. Therefore, the grinding time can be shortened and the life of the grindstone can be extended.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of a present embodiment.

FIG. 2 is a diagram for explaining the operation of the present embodiment.

FIG. 3 is a diagram for explaining the operation of the present embodiment.

FIG. 4 is a diagram for explaining a screen display of the present embodiment.

FIG. 5 is a diagram for explaining the operation of the present embodiment.

FIG. 6 is a diagram for explaining the operation of the present embodiment.

FIG. 7 is a diagram for explaining the operation of the present embodiment.

FIG. 8 is a flowchart showing the operation of the present embodiment.

FIG. 9 is a flowchart showing a continuation of FIG. 8;

FIG. 10 is a flowchart showing the operation of this embodiment.

FIG. 11 is a diagram showing a work process of the present embodiment.

FIG. 12 is a diagram for explaining a conventional technique.

[Explanation of symbols]

 11 Table 13 Headstock 14 Tailstock 15 Grindstone Stand 16 Grindstone 50 Control Panel 53 Handle W Work

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiroaki Sugiura 1-1-1 Asahi-cho, Kariya city, Aichi Toyota Koki Co., Ltd.

Claims (2)

[Claims] 1. A grindstone moving means for moving a grindstone relative to a work, wherein the grindstone moving means advances the grindstone relative to the work to machine the outer circumference of the work. In the grinding apparatus, a grinding method input means for inputting a grinding method for grinding one processing location on the work, a finishing diameter input means for inputting a finishing diameter of the processing location, the grinding method and the finishing diameter. Automatic determination means for automatically determining processing data from and, by positioning the grindstone at both end positions of the processing location, both end position input means for inputting both end positions of the processing location, the processing data and the both end positions Based on the processing means for performing grinding by moving the grindstone relative to the processing location, and by this processing means After finishing the processing of the processing point,
A grinding device, comprising: a machining location transfer means for migrating a target machining location to another machining location. 2. A grindstone moving means for moving the grindstone relative to the work, wherein the grindstone moving means advances the grindstone relative to the work so that at least the outer circumference of the work is In a grinding machine for processing based on two grinding steps, a grinding method input means for inputting a grinding method for grinding one processing location on the workpiece and a finishing diameter input means for inputting a finishing diameter of the processing location. And an automatic determining means for automatically determining processing data from the grinding method and the finishing diameter, and both end position input means for inputting both end positions of the processing location by positioning the grindstone at both end positions of the processing location. And the grinder by moving the grindstone relative to the processing location based on the processing data and the both end positions. First processing means for performing only the first grinding step, and a processing point for moving the target processing point to another processing point after the first grinding step is completed by the first processing means A transition means and a second processing means for starting the processing of the second grinding step of each processing location after the completion of the first grinding step of all the processing locations of interest. Grinding equipment.