JPS63289604A - Program checking system for numerical control device - Google Patents

Abstract

PURPOSE:To easily detect and correct an error position of a program by reading out each block successively every successive input of a test command after setting up an NC device to a test mode, and then displaying the locus of a commanded tool on a display device. CONSTITUTION:At the time of checking an NC working program stored in a non-volatile memory 5, a manual data input device 4 with a graphic display is allowed to draw a tool locus with a shape to be worked. Namely, the NC device is switched to the test mode by the CPU 1, each block of the program is read out and drawn every input of a test command based upon the successive depression of a test button and the drawn contents and the program are displayed on the device 4. If there is no error, the displayed result is held as it is, and when an error is detected, the test button is depressed and the succeeding sequence number is applied to draw a new locus by an axis control circuit 6.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a program check method in a numerical control device with a built-in microcomputer that controls machines such as machine tools.

Conventional Technology A numerical control II device (hereinafter referred to as an NC device) with a built-in microcomputer inputs a program for the shape to be machined into the NC device, and the NC device distributes pulses to each axis of the machine according to the program. This is to control the workpiece to be machined into the desired shape, but in order to check the input program, the numerical value υJt! It is already known to display programmed machining shapes on a graphic display device provided in an I-device.

Problems to be Solved by the Invention In the conventional system, in order to check the program, the machining shape to be machined by the program is displayed on a graphic display device, and even if an error in the program is discovered from the displayed machining shape, It is difficult to easily find out which block in a program is in error. For example, 100 in the positive direction of the X-axis
When programming a block that moves 1000 in the negative direction of the X-axis where a command to move 0 should be given, where in the program is such an incorrect block and what is its sequence number? It was not immediately obvious, and it took time and was not efficient to modify the program.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a program checking method that can immediately find blocks in which errors are made when checking a program.

Means for solving the problem: A test command means is provided for displaying the tool trajectory of the program command for each block of the program on the NC device,
After setting the NC device to the test mode, each time a test command is sequentially input from the test command means, one block is sequentially read from the program input to the NC device, and the tool locus of the command of the block is displayed on the graphic display device. The above problem was solved by configuring the system to display and check the program.

Operation After setting the numerical control device to test mode, when a test command is input by operating the test command means, the NC device reads one block from the program and displays it on the graphic display device each time the test command is input. Sequential 1
Draws the tool trajectory of the command for each block.

As a result, the commanded tool path for one block is drawn every time a test command is input, so if there is a block that has been programmed incorrectly, the block that was programmed incorrectly can be immediately identified, making it easy to correct the program. Become.

Embodiment FIG. 1 is a block diagram of main parts of an NC device implementing an embodiment of the present invention, and 1 is a microcomputer (hereinafter referred to as CPU).
), the CPU includes a ROM2 that stores a management program, and a RAM3 that is used for temporary storage of data, etc.
, manual data input device with graphic display device (hereinafter referred to as CRT/MDI)4. A non-volatile memory 5 composed of a bubble memory or a CMOS memory that stores the NC program and setting values of various parameters, and an axis control circuit 6 that controls each axis of a machine such as a machine tool controlled by the NCH device. are connected by bus 7.

In the above configuration, when checking the NC program stored in the nonvolatile memory 5, the CRT,
The graphic display device of /MDI4 will draw the tool trajectory of the shape to be machined by the program, for example, the shape of the tool trajectory from position P1 to R2, R3, R4, Pl as shown in FIG. Assume that a program for processing . Such a program would be as follows.

N210 G91 Y-1000:N220
X100O N240 GO3Yloooo R500:N26
0

X is a movement command for the Y-axis and X-axis, GO3 is a G code for a counterclockwise circular interpolation command, R is a radius of the circular arc, and M2O is an M code indicating the end of the program.

Therefore, when checking such a program before executing it, the CRT/MDI 4 is operated, the single block switch is turned on, and the NC device is switched to the test mode.

When the CPU 1 is switched to the test mode, it starts the program drawing process shown in FIG.
It is determined whether or not the test button for inputting a test command for drawing the program tool path provided on the soft key of I4 is turned on (step S2). When the test button is turned on, the non-volatile memory 5 Step 33) Read one block from the program stored in
, process and analyze the distribution data of one block (Step S4), draw the resulting tool trajectory on the screen of the graphic display IJ of the CRT/MDI 4 (Step 5), and also display the program of the read block on the graphic display device. Display (step S6). For example, when sequence number N210 of the above program is read, positions P1 to P2 are drawn and the program of the block with sequence number N210 is displayed. next,
Returning to step S1, when the test button is pressed again and a test command is input (step S2), the next block is read (step $3), and the drawing and program are displayed (steps 84 to S6).

Thereafter, each time the test button is pressed one after another and a test command is input, the program is read and drawn one block at a time, and the program is also displayed.

Then, the operator looks at the drawn tool trajectory, that is, the machining shape, and checks whether the program is incorrect. If there is no mistake, the drawing of the tool path shown in FIG. 2 and the program with the sequence numbers N21O-N280 will be displayed on the screen of the graphic display device, for example.

By the way, for example, if you mistakenly program X-1000 instead of X100O in the block with sequence number gN220, after drawing the block with sequence number N210 and drawing from position P1 to P2, the test button is pressed. When the tool trajectory of the next block with sequence number N220 is drawn, positions P2 to P'3 are drawn as shown by the broken line in FIG. Therefore,
At this point, the operator can easily discover that the drawn program for the block with sequence number N220 is incorrect. In this way, if the direction to move, movement axis, movement M, etc. are programmed incorrectly, it is easy to identify that the program is incorrect when the tool path of the incorrectly programmed block is displayed. It is possible to easily discover the blocks that need to be modified in the program.

In the above embodiment, the single block command switch is turned on to perform the processing shown in Fig. 3, but each time the test button is pressed, only one block is read, the tool trajectory is drawn, and the program is displayed. Alternatively, the test button may also serve as a single block command.

Effects of the Invention In the present invention, the program is checked by sequentially drawing a tool path for each block of the program, so that errors in the program can be easily found, and program checking and program correction are facilitated.

[Brief explanation of drawings]

Fig. 1 is a block diagram of the main parts of an NC neck mounting that implements an embodiment of the present invention, Fig. 2 is an explanatory diagram of an example of a program tool trajectory drawn on a graphic display device, and Fig. 3 is an actual example of the same. 2 is an operational processing flowchart. 1...Microcomputer, 4...Manual data input device with graphic display device ((IT/MD)
I), 7... bus. Straw 1 straw 2 b

Claims (2)

[Claims] (1) The numerical control device is provided with a test command means for displaying the tool trajectory of the program commands for each block of the program, and after the numerical control device is put into the test mode, test commands are sequentially inputted from the test command means. Every time,
A program check method for a numerical control device, characterized in that the program is checked by sequentially reading one block from a program input to the numerical control device and displaying the tool locus of commands of the block on a graphic display device. (2) A program check method in a numerical control device according to claim 1, wherein the graphic display device also displays a program of a block in which a tool trajectory is displayed.