JPH04174006A - Graphic drawing method - Google Patents

Abstract

PURPOSE:To visually confirm a machining progress state in conformity with substance by reading out an NC program to be executed, analyzing its instructions and extracting NC instructions corresponding to machining, and performing graphic drawing based upon data converted to a graphic coordinate system as the NC instructions are executed. CONSTITUTION:The NC data which are read out and analyzed by an NC program analytic device 5 are divided into blocks by a machining instruction deciding and block dividing device 13. A data drawing processor 14 generates drawing process data on a text RAM 11 and a graphic RAM 12 according to the process result. The found data, i.e. a machining coordinate system is converted into the graphic coordinate system, and the converted data are written in a specific area on the graphic RAM 12. Then an unmachined part is optionally colored and machining points are marked; and a machined part is decolored associatively with the movement of the machine coordinate system and the marks of the machining point are also moved. Consequently, the machining progress state can be confirmed visually on the screen of a CRT, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a graphic drawing method for drawing the progress status of electrical discharge machining on a CRT or the like.

[Prior Art] Fig. 8 is a block diagram showing the configuration of a numerical control device used in a conventional electrical discharge machining device. In the figure, (1) is an NC program storage area, and (2) is an NC program input/output device. , (3) is a memory for storing NC data, (4)
(5) is a drawing data creation device that creates drawing data for each NC instruction, (5) is an NC program analysis device that analyzes the contents of an NC program, and (6) is an NC program analysis device that has been analyzed by the NC program analysis device (5). A data interpolation device (7) generates vector data for moving each axis based on a program, and a data interpolation device (7) transfers its contents to a CRT (
101 A data display device that creates data to be displayed on the screen, (8) a servo control device that performs servo control of each axis based on the vector data generated by the data interpolation device (6), (9) is the X axis,
A servo motor that drives the Y-axis or Z-axis, etc. (10
) is a CRT for displaying various information, (11) is a character,
Text RAM where numbers etc. are stored, (12) is CRT
(This is a graphic RAM in which control data for 101 display is stored.

Next, the operation will be explained. After reading the NC data stored in the NC program storage area (1) by the NC program input/output device (2), analyzing or calculating the read NC data by the NC program analysis device (5), Depending on the analysis results, data such as processing conditions or variables in the NCC deck storage area (3) may be referred to, and the data may be transferred to the drawing data creation device (4).
) and output to the data interpolation device (6). The data interpolation device (6) decomposes the data output from the NC program analysis device (5) into movement vector units, creates movement vector data corresponding to each axis layer, and also creates movement vector data and processing conditions. Based on this, a servo control device (12) that creates axis spacing data that takes into account machining speed and drives a servo motor (12) corresponding to each axis.
8).

On the other hand, the data display device (7) converts the drawing data for each NC instruction created by the drawing data creation device (4) based on the movement vector data created by the data interpolation device (6). , text RAM +11
1 and graphic RAM t12+ to be displayed, and based on the results, drawing processing is performed at each drawing position. FIG. 9 is an example showing the display state on CRT (10) drawing when the t4fNc program command is GO12-10,000:,
It shows the machining progress in the Z-axis direction, that is, when the machining depth is 10 mm, and the command value of the machining depth is -10,000,
The current value is -3,555, the remaining distance in the machining depth direction is -6,
555 is displayed.

[Problem to be solved by the invention] Since the conventional graphic drawing method is executed as described above, for example, in order to check the progress of processing, CR
T1lO) It is necessary to read the current value, remaining distance, or command value displayed on the screen, and understand the machining progress status at that point based on these values. In the case of machining, there were problems that needed to be resolved, such as the fact that it was very difficult to confirm the maximum depth of machining just by looking at the numerical values.

This invention was made to solve the above-mentioned problems, and an object of the present invention is to provide a graphic drawing method that allows the progress of processing to be visually confirmed on a screen such as a CRT.

Another object of the present invention is to obtain a graphic drawing method that enables more accurate visual confirmation in addition to the above object.

[Means for solving the problem 1 The graphic drawing method according to the present invention
a stage of reading a C program and analyzing its instructions;
A step of extracting an NC instruction corresponding to machining from the analyzed instructions, and a step of extracting the extracted NC instruction from the analyzed instruction. The process consists of a step of converting the coordinate system to a graphic coordinate system, and a step of graphically drawing the contents based on the data converted to the graphic coordinate system as the extracted NC command corresponding to processing is executed. be.

Further, a graphic drawing method according to another aspect of the present invention includes the steps of reading an NC program to be executed and analyzing its instructions, and selecting N for processing from among the analyzed instructions.
The step of extracting the C command and the NC corresponding to the extracted processing
detecting actual coordinate values of the mechanical system during instruction execution;
The method consists of a step of converting a coordinate system based on the detected coordinate values into a graphic coordinate system, and a step of graphically drawing the contents based on the data converted into the graphic coordinate system.

[Operation] In this invention, an NC program to be executed is read out, its instructions are analyzed, NC instructions corresponding to machining are extracted from it, and the extracted NC instructions are converted from a mechanical coordinate system to a graphic coordinate system. Then, along with the execution of the extracted processing-compatible NC command, graphic drawing is performed based on the data converted to the graphic coordinate system,
Display the processing progress.

Further, in another aspect of the present invention, an NC program to be executed is read out, its instructions are analyzed, NC instructions for machining are extracted from the NC program, and a machine that is executing the extracted NC instructions for machining is provided. Find the actual coordinate values of the system, transform the coordinate system based on these coordinate values into a graphic coordinate system,
Graphic drawing is performed based on the data converted to the graphic coordinate system, and the actual processing progress is displayed.

[Embodiment 1 of the Invention Hereinafter, an embodiment of the present invention will be described with reference to the drawings. 1st
In the figure, (13) is the NC program analysis device (5)
Read one NC instruction analyzed by A processing instruction discrimination/blocking device (14) is a data drawing processing device that executes drawing processing of the contents based on the output of the processing instruction discrimination/blocking device (13), (15) is a processing instruction discrimination reblocking device. This is an NC instruction definition table in which blocking target NC instructions used during blocking in the coding device (13) are described. In this figure, the same reference numerals as those in FIG. 8 showing the conventional example indicate the same or corresponding parts, so the explanation thereof will be omitted.

FIG. 2 is a diagram showing the processing flow of the machining instruction discrimination/blocking device (13). In the figure, (17) analyzes the NC program and includes the NC instruction definition table (1
This is a blocking flag (hereinafter referred to as blocking FG) that is set when a corresponding character string exists in 5).

FIG. 3 is a diagram showing the processing flow of the data drawing processing device (14). In the figure, (18) is an NC program,
(19) is a subroutine to be blocked, and (20) is an NC instruction to be blocked.

FIG. 5 is a diagram showing an NC program for graphic drawing and an example of its graphic drawing.
f21+ is the drawing coordinate, (22) is the NC to be blocked
Based on the result obtained by processing the command (20) and the result of the automatic scaling process, the machined hole drawn on the CRT (101 screen), (23) is the unprocessed part of the machined hole (22) that is currently being machined. , (24) are marks for indicating the processing position.

Next, the operation will be explained. NC program analysis device (
The NC data read and analyzed by 15) is
If the processing instruction determination/blocking device (13) determines that the NC instruction is a blocking target NC instruction, blocking processing is executed. As shown in FIG. 2, the blocking processing method first reads out one NC instruction, as shown in step (Sl), and then reads step (Sl).
As shown in (, the pointer of the NC instruction definition table (1 stone) is loaded, and in step (S3), one instruction of the NC instruction read in the above step +SL+ and the above N
The contents of the C instruction definition table (15) are compared to determine whether the corresponding character string (here, 626) exists.

If the corresponding character string G26 does not exist, the pointer in the NC instruction definition table (15) is incremented as shown in step (S4), and the process moves to step (S5). table end (
It is determined whether or not it is FFI, and if it is not a table end (FF), the process returns to step (S3) and the above determination operation is repeated. When the corresponding character string G26 is confirmed, step (S6) for performing blocking is performed. ),
Blocking FG (set 171).

On the other hand, in the data drawing processing device (14), text RAM [111 and graphic RA
M (121) Drawing process data is generated. As shown in FIG.
As shown in 310), the NC program (
18), and save the read pointer (.Next, in step +5ll), set the blocking F G f set in the above step (S6).
17), and if there is a flag in the blocked FG (171), execute step (SL2+) as shown in step (SL2+).
, after inputting one instruction of the NC instruction to be blocked (subroutine L 9000 shown in FIG. 4), step f51
Steps fs141, (S12), (
S13) is repeatedly executed. Note that step (S14
1, the maximum and minimum values in each instruction of the subroutine L 9000 are calculated. Next, in the step (S131), the subroutine return command G2 is
3 is confirmed, in step (S15), based on the maximum value and minimum value calculated in the above step (S14),
A scale value for drawing the shape defined in the above subroutine L9000 on the CRT screen at an appropriate size is automatically calculated. Subsequently, as shown in step fs16), the NC instruction pointer at the time when the presence of the blocking FG (17) flag is confirmed is saved in the program count, and then the process moves to the drawing processing routine.

Also, in the above step (Sill), block FG
If the flag does not exist in (17), step (
As shown in step S19), it is determined that this is a single machining command that does not require blocking, and the scale value of the defined shape of the NC command is automatically calculated, and the process moves to step 1s161, whereupon the same process as above is performed. Shifts to the drawing processing routine.

Next, the drawing processing routine will be explained based on the fourth flash. As shown in step f320) (, step fs151 above)
The data obtained in C, that is, the mechanical coordinate system, is
RT (10) Convert to a graphic coordinate system for display on the screen. Next, as shown in step (S211),
The converted data is converted into a graphic RAM [12
+ Buds in the designated area above. Next, step fs
22], as shown in (S23), the unprocessed part is arbitrarily colored and the processing points are marked (24).
Set. Next, as shown in step (S24+), the color of the machined part is erased and the mark (24) of the machined point is also moved in conjunction with the movement of the machine coordinate system.

Through the above-described processing, as shown in FIG.
For example, the processing contents processed in subroutine L9000 are displayed on the 01 screen.

That is, the drawing coordinates (21) and the machined hole (22) corresponding to the system are displayed, and the unprocessed part (23) inside the machined hole (22) is filled with a predetermined color, and the progress of the process is displayed. The current position displayed by the mark (24) moves in accordance with the machining progress, and as the machining progresses, the color of the machined part is erased, and the inside of the machined hole (22) is drawn in accordance with the machining entity. It will be done.

Next, another invention of this invention will be explained. In FIG. 6, (16) is a conversion device that converts the mechanical coordinate system into the graphic coordinate system during actual operation. Note that in this figure, the same reference numerals as in FIG. 1 indicate the same or corresponding parts, so the explanation thereof will be omitted.

Next, the operation will be explained. It should be noted that since the method of drawing processing is the same as that of the above embodiment, the explanation thereof will be omitted, and only the different parts will be explained.

Information about the device consisting of the servo motor (9) and coordinate values of the mechanical system on the NC program output from the data drawing processing device (14) are input to the conversion device (16). After the actual machine coordinate system is calculated based on the data, it is converted to the graphic coordinate system, and the text RAM (ill) and the graphic RAM (
121 is generated. The drawing processing method is as shown in the drawing processing routine shown in FIG. As shown in step f331+ (based on this position information, the mechanical coordinate system on the NC program is corrected to calculate the actual coordinate values of the mechanical system. Next, step fs32), as shown in step (S311), the The corrected mechanical coordinate system is converted into a graphic coordinate system. Thereafter, steps fs21), [5221, (S23), fs2]
In step 41, the same process as in the above embodiment is executed to display the machining status (as shown in FIG. 5) on the CRT+101 screen.

In addition, in each of the above embodiments, the case where the state of the machined hole (22) on the CR'r (10) screen is displayed with respect to the Z-x axis has been described, but the present invention is not limited to this, and other axes may be displayed. Needless to say, it can also be displayed in the same manner as above.

[Effect of the invention 1 As described above, according to the present invention, an NC program to be executed is read out, its instructions are analyzed, NC instructions corresponding to machining are extracted from it, and the extracted NC instructions are applied to the machine. The coordinate system is converted to a graphic coordinate system, and as the above-mentioned extracted machining-compatible NC command is executed, graphics are drawn based on the data converted to the above-mentioned graphic coordinate system. This has the effect that it is possible to obtain something that can be visually confirmed in accordance with the above.

According to another aspect of the present invention, the NC program to be executed is read out, its instructions are analyzed, the NC instructions corresponding to machining are extracted from the NC instructions, and the extracted NC instructions corresponding to machining are
The actual coordinate values of the mechanical system during execution of the C command are detected, the coordinate system based on these coordinate values is converted to a graphic coordinate system, and graphic drawing is performed based on the data converted to the graphic coordinate system. Therefore, in addition to the above effects, there is an effect that it is possible to confirm the actual processing progress state more accurately.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of a numerical control device used in an electric discharge machining apparatus according to an embodiment of the present invention, and FIG. 2 shows a processing flow of a machining command discrimination/blocking device according to an embodiment of the present invention. FIG. 3 is a diagram showing the processing flow of a data drawing processing device according to an embodiment of the present invention, and FIG.
5 is a diagram showing the flow of a drawing processing routine according to an embodiment of the present invention, FIG. 5 is a diagram showing an NC program for graphic drawing and an example of its graphic drawing according to an embodiment of the invention, and FIG. 6 is a diagram showing the flow of a drawing processing routine according to an embodiment of the present invention. FIG. 7 is a block diagram showing the configuration of a numerical control device used in an electric discharge machining apparatus according to another embodiment of the present invention; FIG. 7 is a diagram showing the flow of a drawing processing routine according to another embodiment of the present invention; FIG. 8 is a block diagram showing the configuration of a numerical control device used in a conventional electrical discharge machining apparatus, and FIG. 9 is a diagram showing an example of data displayed on a conventional CRT screen. In the figure, f13) is the processing command discrimination/blocking charger, (14) is the data drawing processing device, and (15) is the NC
The instruction definition table (I6) is a conversion device. In addition, in the figures, the same reference numerals indicate the same or equivalent parts.

Claims (2)

[Claims] (1) A step of reading an NC program to be executed and analyzing its instructions, a step of extracting a machining-compatible NC instruction from the analyzed instructions, and a graphical representation of the extracted NC instruction from the machine coordinate system. a step of converting into a coordinate system;
A graphic drawing method comprising the step of, upon execution of the extracted NC command corresponding to processing, drawing the contents graphically based on the data converted to the graphic coordinate system. (2) A step of reading an NC program to be executed and analyzing its instructions, a step of extracting a machining-compatible NC instruction from the analyzed instructions, and a step of executing the extracted machining-compatible NC instruction. A step of detecting the actual coordinate values of the mechanical system, a step of converting the coordinate system based on the detected coordinate values into a graphic coordinate system, and a step of graphically drawing the contents based on the data converted to the graphic coordinate system. A graphic drawing method comprising the steps of: