JPH0454504A - Graphic definition system for automatic programming device - Google Patents

Abstract

PURPOSE:To omit the converting operations of the unit systems by converting each axial component of the data having different unit systems of graphic definition sentences of a part program into a common unit system with a conversion formula, defining a graphic by the conversion data, carrying out a motion definition sentence for production of the NC data, and outputting the NC data after converting it into a unit system used at input. CONSTITUTION:A conversion formula which is used for conversion of the working unit system of a part program into a common unit system is obtained and inputted to an automatic programming device. Then the data defined by the graphic definition sentence of the part program is automatically converted into the data on the common unit system. Thus a graphic is defined. Based on this data, a motion definition sentence is carried out for production of the NC data on the common unit system. Then each axial component is converted into a unit system used at input of the part program based on the conversion formula and outputted as the NC data. Thus the converting operations of the unit systems can be omitted and the calculation mistakes are decreased.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a graphic definition method for an automatic programming device.

Conventional technology The software installed in the automatic programming device that analyzes the part program and creates NC data processes the input data based on the processing unit system specific to the automatic programming device, such as the unit of length (mm). It is now possible to handle data with different dimensions such as lengths and angles, data with different weights and measures such as the International System of Units S■ and inches, and data with different orders, that is, data with different unit systems. It cannot be identified and processed by itself.

However, as a practical matter, at the product design stage, it is often more convenient to use a mixture of unit systems with different dimensions, such as length and angle, or unit systems with different orders. Dimensions shown in the drawings are not necessarily written in accordance with the International System of Units Sl, and in some cases, a unit system such as inches is used.

Therefore, if you create a part program for machining using machining drawing data created by mixing unit systems and create NC data with an automatic programming device, the unit systems of various data will be mixed up and processed. , the output data will be inconsistent and the machine tool will not be able to machine the desired shape and dimensions.

Problems to be Solved by the Invention This type of problem can be solved by converting data in processing drawings with different unit systems into a processing unit system specific to an automatic programming device before inputting it, but this cannot be done manually. If you try to do this, calculation errors are likely to occur because the calculations required to convert the unit system are complex and numerous, and even if you create a program to convert the unit system and have the computer perform the conversion process. , the processing drawing data is input into the computer one by one, the operator creates the part program based on the computer calculation results, and then
Since this part program must be manually input into the automatic programming device again, the input operation becomes redundant and productivity is impaired.

Therefore, an object of the present invention is to solve these drawbacks of the prior art, and even when data with different unit systems are used, it is easy and convenient to use without having to perform many complicated calculations or troublesome input operations. An object of the present invention is to provide a graphic definition method for an automatic programming device that can accurately create NC data.

Means for Solving the Problems The figure definition method of the present invention includes a part program composed of data defined in an arbitrary unit system for a plurality of orthogonal axes, and units used in the part program. By inputting a conversion formula for converting a system into a common unit system into an automatic programming device, the automatic programming device automatically converts each axis component of the data of the figure definition statement of the part program into the common unit system using the above conversion formula. After converting to the unit system of N
The above objective was achieved by converting each axis component of the C data into the unit system used when inputting the part program based on the above conversion formula and outputting it as NC data.

In addition, when dealing with unit systems that require complex processing, such as conversion of unit systems with different dimensions, it is also possible to use conversion formulas to convert these arbitrary unit systems into the processing unit system of the automatic programming device. An automatic programming device that stores settings in advance in a storage means of the device, and also stores a part program in which each axis component is composed of an arbitrary unit system, a unit system of each axis of the part program, and parameters for converting the unit system. The automatic programming device calculates the conversion coefficient for each axis using the above conversion formula from the input unit system and parameters of each axis, and processes the data of the figure definition statement of the part program based on the conversion coefficient. After converting to the unit system and defining the figure, execute the motion definition statement to create NC data in the processing unit system,
Each axis component of the data is multiplied by the inverse conversion coefficient of the corresponding conversion coefficient to convert it to the unit system used when inputting the part program, and N
Output it as C data.

Automatic programming of a part program composed of data defined in an arbitrary unit system for multiple orthogonal axes, and a conversion formula to convert the unit system used in the part program to a common unit system. When input to the device, the automatic programming device converts each axis component of the data of the figure definition statement of the part program into the above common unit system using the above conversion formula, and creates a figure definition using the data converted to the common unit system. After that, execute the motion definition statement to create NC data in the common unit system, convert each axis component of the NC data to the unit system at the time of inputting the part program based on the above conversion formula, and create NC data in the common unit system. Output as data.

In addition, a conversion formula for converting an arbitrary unit system to a processing unit system of the automatic programming device is set and stored in advance in the storage means of the automatic programming device, and a part program in which each axis component is composed of an arbitrary unit system. When the unit system of each axis of the part program and parameters for unit system conversion are input into the automatic programming device and operated, the automatic programming device performs the above conversion from the input unit system and parameters of each axis. Find the conversion coefficient for each axis using the formula, convert the data of the figure definition statement of the part program to the processing unit system based on the conversion coefficient, perform the figure definition, and then execute the motion definition statement to convert the data to the processing unit system. N in
C data is created, each axis component of the data is multiplied by the inverse conversion coefficient of the corresponding conversion coefficient, converted to the unit system used when inputting the part program, and output as NC data.

Example Hereinafter, the present invention will be described in detail with reference to the drawings.

FIG. 1 is a block diagram showing the main parts of an automatic programming device according to an embodiment of the present invention, in which 1 is a microprocessor (hereinafter referred to as CPU), and 2 is a control program for controlling the automatic programming device. 3 is a RAM that stores system programs, part programs, and various data loaded from various floppy disks 9; 4 is an NC data storage memory that stores NC data created by the automatic programming device; 5 is a keyboard, 6 is a disk controller, 7 is a CRT as a graphic display,
Each element 1 to 7 is connected to the CPU 1 via a bus 8, and a floppy disk 9 serving as a system disk is used to create NC data by translating a part program input in an arbitrary unit system to the automatic programming device. A program for NC data creation processing is stored.

FIG. 2 is a flowchart showing an outline of the NC data creation process of this embodiment, including manual processing by an operator, and FIG. 3 is a processing drawing showing cylindrical groove machining using two orthogonal axes.

In Fig. 3, the rotation angle of the cylinder corresponds to the X axis of the X-Y coordinate system formed by two orthogonal axes, and the axial distance axis of the groove machining shape starting from the chuck corresponds to the Y axis. There is. X-axis unit system (deg,) and Y-axis unit system [mm]
Although the dimensions are different, in the example, there is no need to consider the difference in unit system when creating a part program, and the figure definition statement indicating the groove machining shape in the part program is simply written using the original unit system. Each axis component x [deg,),
y [mm). For example, the groove machining shape of the part from point P to point P2 is the combination of angle and length (x, y) - (0, 100) and (x, y
)(80,100).

The figure definition method of this embodiment will be described below with reference to a flowchart outlining the NC data creation process. however,
A program for NC data creation processing, and a third
It is assumed that a part program for the grooved shape as shown in the figure has already been downloaded to the RAM 3, and NC data will be created for this part program. Further, it is assumed that the processing unit system of each axis of the automatic programming device in this embodiment is (mm), and the cutting radius of the cylinder on which groove processing is performed is R, (mm).

The operator first finds a conversion formula that matches the unit system of each axis component x, y that constitutes the figure definition statement in the part program to a common unit system. That is, in this case, the conversion coefficients Cx and Cy of each axis are determined. In the example shown in Fig. 3, the common unit system is [mm], the unit system of the axis component X in the part program is (deg,), and the cutting radius of the cylinder is R, (mm), so R , (mm) and corresponds to the rotation angle x (dB,) of the axis component X.
(mm) = (2πRx (mm) /360
(deg,) ) ・x (deg,), and x (
The value of the conversion coefficient Cx for converting deg, ) to [mm], which is a common unit system, is 2πR,/360. Furthermore, since the unit system of the axis component y in the part program is the same as the common unit system (mm), the value of the conversion coefficient Cy is 1. Therefore, the operator sets and stores the values of these conversion coefficients cx and CY in the RAM 3 via the keyboard 5 (
Above, step SL).

Next, when the automatic programming device is activated to start inputting the part program (step S2), the CPU
I reads one block of data of the part program from RAM 3, and determines whether the data in the one block indicates a program end (step S3); if it is not a program end, further determines whether it is a figure definition statement. It is determined whether or not (step S4). If it is a figure definition statement,
The values of each axis component x and y of the figure definition statement of this block are multiplied by the conversion coefficients Cx and Cy of each axis to redefine the figure to be converted to common unit system data x' + y' (mm:l). Execute and store the values of each axis component X', y' in RAM3.
At step S5), the processing for this block is completed and the next block is read.

Furthermore, if the determination result in step S4 is false, it is further determined whether or not it is a motion definition sentence (step S6). If it is not a motion definition statement, it means that this block is another process that is not directly related to the creation of NC data, so the CPU 1 executes the appropriate process corresponding to this block (step 510), and then executes the next process. Read one block.

In the automatic programming device of this embodiment, a motion definition statement is set for a predefined figure due to the format for creating a part program, so the machining shape is There is no motion definition statement that defines the motion of . For example, in FIG. 3, after defining the machining shape portion P7.2 with a figure definition statement, setting the motion definition statement of the machining shape portion P7.2,
Next, a part program is created by repeating operations such as defining the machining shape portion PT23 with a figure definition statement and setting a motion definition statement for the machining shape portion P72m, or machining from the machining shape portion PT, □. Shape part PT67
It is possible to create a part program by continuously defining the figures and then setting motion definition statements corresponding to these machining shape parts.
There is no need to set the motion definition statement for , and then set the figure definition statement for the machining shape portion PT,2.

Therefore, in this NC data creation process, which is executed by reading the part program one block at a time, the motion definition statement for a specific part is not detected before the figure definition statement for the specific machining shape part is detected. At the stage where a motion definition statement is detected in the process of step S6, the values of each axis component X, y, which is a figure definition statement corresponding to this motion definition statement and is indicated by Through processing, all of the data is converted into data X', y' in a common unit system (mm) and stored in the RAM 3.

Then, when a motion definition statement is detected in the determination process of step S6, the CPU 1 quotes each axis component X', y' of the figure definition statement corresponding to this motion definition statement from the RAM 3 and executes the motion definition. , NC based on a common unit system (mm)
After creating the data X'y' (step S7), the inverse transformation coefficient Cx-1 (=360/2 yrRx) and Cy
-' (=1) is multiplied by the NC data X (deg,] corresponding to the unit system of each axis when inputting the part program.
and Y (mm) (step S8), these values are stored in the NC data storage memory 4 as final NC data (step S9), the processing for this block is completed, and the next one block is read. .

The CPU reads the data of the part program block by block from RAM3 in the same manner, and if this block is a figure definition statement, each axis component X (deg-) * y [:
Multiply the value of [mm] by the conversion coefficients Cx and Cy of each axis to obtain the data of the common unit system X' [mm), y [mm
) and store it in the RAM 3. When motion definition statements corresponding to these figure definition statements are detected (step S5), they are converted into data of a common unit system by the process of step S5 above. Each axis data x [m
m].

Execute motion definition based on y [mm] to obtain NC data x [mm], y' in the common unit system.
(mm) is created (step S7), and the conversion coefficients C for each axis, the inverse conversion coefficients C for CY are added to these NC data XIY'.
Multiply I '+ CY' to calculate NC data X (deg,), Y [mm) based on the processing unit system of each axis at the time of inputting the part program (step S8), and use it as the final NC data. Output.

Then, when the progerarum end is detected in the determination process of step S3, the CPU 1 completes all the NC data creation process regarding the part program, and enters a standby state in which it waits for a command.

In this example, each axis data x, y given by the figure definition statement of the part program is multiplied by conversion coefficients Cx, Cy that convert the unit system of each axis of the figure definition statement to a common unit system, and Redefine the figure given in the unit system in a common unit system to obtain each axis data x' in the common unit system.
, y' (step S5), execute motion definition based on each axis data x, y' of the processing unit system to calculate NC data x, y # of the common unit system (step S7). , this NC data is given an inverse transformation coefficient CxCY-1
After multiplying by
In the motion definition processing in step S7, the motion definition can be executed using a common unit system, and the final N
C data X.

The unit system for Y can be output in the same unit system as the unit system for each axis data x and y given by the figure definition statement of the part program.

According to this embodiment, the conversion coefficients Cx and CY of each axis used in the figure definition statement of the part program to convert the unit system of each axis to a common unit system are calculated and sent to the automatic programming device together with the part program. Just by inputting the information, the automatic programming device automatically creates NC data for part programs defined in different unit systems.
- There is no need for the operator to perform troublesome arithmetic processing for each piece of data in the part program, reducing calculation errors and creating NC data easily and accurately. Avoid the trouble of entering figure definition statement data twice into a computer or automatic programming device, such as when using a separate computer to convert the unit system of each axis to a common unit system. It will also be resolved.

Conversion coefficient Cx for each axis that converts the unit system of each axis used in the figure definition statement of the part program to a common unit system,
The value of CY does not necessarily need to be calculated by an operator each time, but can be calculated using a conversion formula Cx corresponding to various unit systems.
,, CY, is the storage means of the automatic programming device;
For example, settings may be stored in advance on a floppy disk 9 or the like, which is a non-volatile storage means, along with a program for NC data creation processing, and at the stage of downloading the program and conversion formula to the RAM 3 and starting inputting the part program, When the operator specifies the unit system of each axis used in the figure definition statement of this part program to the automatic programming device, the automatic programming device automatically converts the conversion formula Cx.

It is also possible to select the value of Cy and execute the processes from step S2 onwards.

When the conversion formula is directly stored in the storage means of the automatic programming device as the values of the conversion coefficients CX and CY, the conversion coefficient C
Since the values of χ and CY are fixed values, when handling data of different metrology or data of different order, etc., i.e.
This is limited to the case where the common unit system is expressed as a real number multiple of the unit system of the part program. For example, from [inch] to (m
The conversion coefficient to m) is 25.4.

In addition, when converting unit systems with different dimensions to a common unit system, parameters for unit system conversion are required, so the conversion formula for determining the conversion coefficients Cx and Cy can be created using an automatic programming device. The parameters for unit system conversion are set and memorized in the storage means, and the operator inputs them to the automatic programming device along with the unit system of each axis used in the figure definition statement of this part program at the stage of inputting the part program. Must be entered. The unit system of each axis (hereinafter referred to as
Taking as an example the case where either one of Xu or Yu (referred to as the input unit system) is defined in the rotation angle unit system IJeg, ), the input unit system XU, Y0 and the corresponding conversion formula for each axis Cx' , Cv is shown in Table 1. however,
The common unit system, that is, the processing unit system of the automatic block ramming device is (mm), and the other input unit system is (mm).
shall be entered as .

Table 1. The relation operator between the input unit system and the conversion formula is the input unit system XU of each axis in the process corresponding to step 81 of the NC data creation process.

YUl and parameters for determining the conversion coefficients Cx and CY are input into the automatic programming device together with the part program. In this example, the rotation angle (d
This shows a part program for a groove machining shape that corresponds to the rotation angle [deg,] on the X axis.
In the case where the cutting radius R, (mm) of the cylinder to be grooved is made to correspond, input as a parameter to find the conversion coefficient Cx, and in the case where the rotation angle (deg,) is made to correspond to the Y axis. In this step, the cutting radius RV [ff1m] of the cylinder to be grooved is input as a parameter for determining the conversion coefficient C9. Input unit system XU, Y
ゎ, and the parameters for calculating the conversion coefficients are entered manually on the CPU, which calculates the conversion coefficients Cx and C of each axis based on these data in the process corresponding to step S1.
Calculate Y. That is, both the input unit systems XU and Y of the part program specified by the operator are (
mm), the values of the conversion formulas Cx', Cy' as shown in Table 1 are quoted as they are for the conversion coefficients CX and CY of each axis, and the values of the conversion coefficients Cx and Cy are set to 1. Also, if the specified input unit system Xu or YU is (deg,), CR sends a message to input the value of the corresponding cutting radius Rx [mm] or Rv Crnm].
Display it on the display screen of T7, have the operator input the value of RX or Ry, and based on this parameter value and the conversion formula Cx or conversion formula CY shown in Table 1, calculate the value of the conversion coefficient formula Cx or C7. Then, similarly to the above embodiment, the process of moving to step S2 is executed. For example, if the input unit system Xu is [deg,), and the input unit system Y
If u is specified as a key in units of (n+m), C
The PUI displays the cutting radius Rx on the display screen of the CRT7.
A message to input (n+m) as a parameter is displayed, and the value of the parameter Rx and 2 as shown in Table 1 are displayed.
Since the conversion coefficient Cx (constant) is calculated based on the conversion formula Cx of πR, /360, and the value 1 of the conversion formula CY is set as the conversion coefficient 07, the same result as in the example described above can be obtained. Become.

According to this embodiment, the input unit system XU for each axis is used in the figure definition statement of the part program.

Just input YU and the parameters Rx or RY required for unit conversion of each axis, and the pre-stored conversion formula C
Since the automatic programming device automatically calculates the conversion coefficients Cx and Cv of each axis based on x' and Cv and creates NC data, there is no need for the operator to calculate the conversion coefficient values himself, and calculation errors are avoided. Since this is reliably eliminated, NC data can be created more easily and reliably than in the above embodiment.

Effects of the Invention According to the figure definition method of the present invention, a part program can be created by simply finding a conversion formula for converting the unit system used in a part program into a common unit system and inputting it into an automatic programming device along with the part program. The automatic programming device automatically converts the data defined by the figure definition statement into data in a common unit system to define the figure, executes the motion definition statement based on this data, and executes the NC data in the common unit system.
The data is created, and each axis component of the NC data in the common unit system is converted to the unit system used when inputting the part program based on the above conversion formula and output as NC data. There is no need to perform troublesome arithmetic processing to convert unit systems, reducing calculation errors and creating NC data easily and accurately.

Further, the conversion coefficient or conversion formula for converting the unit system used in the part program to the processing unit system of the automatic programming device is set and stored in advance in the storage means of the automatic programming device, and the units of each axis of the part program are set and stored in advance. By inputting the parameters required for the system and conversion process into an automatic programming device, the conversion coefficients can be automatically calculated and the conversion and inverse conversion processes can be executed. Since there is no need to calculate the value of , calculation errors are reliably eliminated, NC data can be created more easily and reliably.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the main parts of an automatic programming device according to an embodiment that implements the method of the present invention, and FIG. 2 is a flowchart showing an outline of the NC data creation process of the same embodiment, including manual processing by an operator. , FIG. 3 is a processing drawing showing an example of cylindrical groove processing indicated by two orthogonal axes. 1...Microprocessor (CPU), 2...R
OM, 3...RAM, 4...NC data storage memory, 5...keyboard, 6...disk controller, 7...CRT display device, 8...bus, 9...floppy disk . Figure 1

Claims (2)

[Claims] (1) In an automatic programming device that creates NC data from a part program, a part program is composed of data defined in an arbitrary unit system for multiple orthogonal axes, and the units used in the part program. When inputting a conversion formula for converting a system into a common unit system into the automatic programming device and operating the automatic programming device, the automatic programming device will:
Each axis component of the data in the figure definition statement of the part program is converted to the above common unit system using the above input conversion formula, the figure is defined using the data converted to the common unit system, and then the motion definition statement is executed. Create NC data in the common unit system, convert each axis component of the NC data to the unit system at the time of inputting the part program based on the above conversion formula, and create NC data in the common unit system.
A figure definition method for an automatic programming device characterized by output as data. (2) In an automatic programming device that creates NC data from a part program, a conversion formula for converting an arbitrary unit system to the processing unit system of the automatic programming device is set and stored in advance in the storage means of the automatic programming device. , input a part program in which each axis component is composed of an arbitrary unit system, the unit system of each axis of the part program, and parameters for unit system conversion into the automatic programming device, and operate the automatic programming device. Then, the automatic programming device calculates the conversion coefficient for each axis using the above conversion formula based on the input unit system and parameters of each axis, and converts the data of the figure definition statement of the part program to the automatic programming device based on the conversion coefficient. After converting to the processing unit system and defining the figure, execute the motion definition statement to create NC data in the processing unit system,
Each axis component of the data is multiplied by the inverse conversion coefficient of the corresponding conversion coefficient to convert it to the unit system used when inputting the part program, and N
A figure definition method for an automatic programming device characterized by outputting as C data.