JPH0192807A - Cutting graphic plotting system - Google Patents

Abstract

PURPOSE:To easily check NC data by finding out a working area from a cutting movement sentence and a tool shape at the time of reading out the cutting movement sentence, and painting out the working area with a background color to plot the cutting state of a material. CONSTITUTION:A material shape painting-out definition sentence (MPS) for painting out a material with a prescribed color and a tool shape definition sentence (TFS) are inserted into a part program (PTP). The contents of the part program (PTP) are read out every sentence, and when the read sentence is the material shape painting-out definition sentence, a plotting command for painting out the material is outputted to a display device 4 and painted-out material is drawn on a display screen. In case of a tool figure definition sentence, the tool shape is stored in a working memory ld, and in case of a cutting movement sentence, a working area is found out from a tool passage based upon the cutting movement sentence and the tool shape a plotting command for painting out the working area with a background color is outputted to the display device 4 and the outline part is painted out with the background color to draw the cutting state of the material. Consequently, NC data can be easily checked.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a scraping figure drawing method, and in particular to scraping in an automatic programming device that converts a part program created in an automatic programming language into NC data that can be executed by an NC device. Concerning graphic drawing methods.

<Prior art> In automatic programming devices that create NC data using automatic programming languages such as APT and FAPT, points, straight lines, and arcs are defined using simple symbols (shape definition); Define the tool path using the specified points, straight lines, and arcs (linked statement definition) to create a part program using an automatic programming language. (b) After creating the part program using an automatic programming language using the NC data output table The program is converted into NC data consisting of NC data (EIA code or 130 code) in a format that can be executed by NC@.

In such an automatic programming device, it would be convenient if the appearance of the material being scraped away was drawn on the display screen when converting the part program into NC data.

For this reason, in the past, the filled area (material) was sequentially painted one dot (one pixel on a CRT) as the tool moved.
Hardware for high-speed erasing is provided on the display side, and the hardware is used to depict the material being scraped away.

<Problems to be Solved by the Invention> However, if the display device is provided with the above-described hardware that can be filled in and erased, it becomes expensive.

For this reason, automatic programming devices that output NC data using automatic programming M words are usually not equipped with this hardware, and therefore the process of converting the material being scraped away into NC data is It was not possible to draw on the display screen in parallel.

From the above, it is an object of the present invention to scrape off the material in parallel with the conversion process from the part program to NC data (drawing a picture of the situation) without the need for hardware to erase filled areas one dot at a time. The object of the present invention is to provide a scraping figure drawing method that can be used.

<Means for Solving the Problems> FIG. 1 is a block diagram of an automatic programming device that implements the method of the present invention.

1 is an automatic programming main body, 1a is a processor, IC is RAM, 1c-2 is a part program storage area,
1cm3 is an NC data storage area, 4 is a graphic display device, and FTP is a part program using N words for automatic programming.

Function> Insert the material shape filling definition statement MPS that fills the material with a predetermined color into the part program FTP and the tool shape definition statement TFS that defines the tool shape, read the part program one sentence at a time from the beginning, and fill in the material shape. If it is a definition statement, a drawing command for filling in the material (material shape and fill color) is output to the display device 4 to fill and draw the material on the display screen, and if it is a tool shape definition statement, the tool shape is stored in the working memory 1d. ,
If it is a cutting movement statement (included in the motion definition statement MVS), a drawing command (outline and background color) that calculates the machining area from the tool path and tool shape according to the cutting movement statement and fills the machining area with the background color. is output to the display device 4, and the outline portion is filled in with the background color to depict how the material is being scraped off.

<Embodiment> FIG. 1 is a block diagram of an automatic programming device that implements the method of the present invention. In the figure, 1 is an automatic programming main body, la is a processor, 1b is a ROM 11c in which a loading program is stored, is a RAM, and ld is a working memory.

RAM1c is a system program storage area 1c that stores system programs etc. read from a floppy disk.
-1, a part program storage area 1a-2 for storing a part program FTP, an NC data storage area 1c-3 for storing created NC data, and the like are provided.

2 is a printer, 3 is a keyboard, 4 is a graphic display device, 5 is a disk controller, and 5a is a floppy disk.

The part program FTP is a figure definition statement FDS.

It has a material shape filling definition statement MPS for filling in and drawing the material shape, a tool shape definition statement TFS for defining the tool shape, and a motion definition statement MVS for specifying the path of the tool.

For example, the material shape filling definition statement MPS is BLANK.
, j, d, z, x.

It has the format of In addition, referring to Fig. 2, l is the length of the material W, d is the diameter, X and Z are the distances in each axis direction from the coordinate origin to the lower left corner of the round bar material, and the fill color is set to a predetermined color in advance. It is set.

Also, the tool definition statement TFS is TOOL, r, x, z, a,, ao, x', assuming that the tool has the shape shown in Figure 3.
, has the form z'. Here, r is the nose radius of the cutting edge, a-y the cutting edge angle, ao is the cutting edge angle, and x' and z' are the blade lengths in the X and Z directions, respectively.

The scraping figure drawing method according to the present invention will be explained below according to the flowchart shown in FIG. It is assumed that the part program has already been created and stored in the storage area IC-2.

One command statement is read from the part program, it is checked whether the command statement is the program end, and if it is the program end, the processing is terminated (step 101.1).
02).

If it is not the end of the program, the tool shape definition statement is checked (step 103), and if it is the tool shape definition statement, the tool shape data is stored in the working memory ld (step 104), and the processes from step 101 onwards are repeated.

However, if it is not a tool shape definition statement, it is checked whether it is a statement related to cutting movement (cutting movement statement) (step 105), and if it is not a cutting movement statement, normal processing is not executed (step 106).
), then the processing from step 101 onwards is repeated. For example, in the case of a material shape fill definition statement, the shape data that specifies the outer shape of the shape and a fill command are sent to the graphic display family @4, and the graphic display side performs the fill process of filling the inside of the specified shape with a predetermined color. to fill in and draw the material. Also, for processing condition statements such as M, S, and T, M air sac, S air sac,
Create NC data such as TIJ function.

On the other hand, in step 105, if it is a cutting movement statement,
The outer shape of the machining area is determined from the tool path and tool shape based on the cutting movement statement (step 107), and shape data indicating the outer shape and a drawing command for filling the inside of the shape with the background color are output to the graphic display device 4 (step 108).
), the graphics display side performs a fill process to fill in the processed area with the background color to depict how the material is being scraped off.

Thereafter, in step 106, NC data regarding the cutting movement is created, and after creation, the processes from step 101 onwards are repeated.

FIG. 5 is an explanatory diagram of the calculation method of the machining area in step 107, in which the tool TL is moved to the point P by the cutting movement statement.
Assume that a command is given to cut linearly from point P2 to point P2. Now, the area to be processed by the cutting movement is the part filled with fish schools in FIG. 5, and therefore the area to be processed is the tool edge shape E0 at the cutting start point P2.
E, and the external shape of the tool path portion E2. It is an area surrounded by ES and the tool edge shape E, E4 at the cutting end point P2, and is an arc E. -Line segment E, -! s minute E2 - line segment E3 - arc E4
- Line segment E5 becomes the outline of the processing area. Note that the blade edge shape E0. involved in cutting. E, (E3. E4) are determined depending on the tool shape data and cutting direction.

<Effects of the Invention> According to the present invention, the material shape filling definition statement and the tool shape definition statement defining the tool shape are inserted into the part program, the material is filled in and drawn on the display screen, and the cutting movement statement is executed. When read, the machining area is determined from the cutting movement statement and the tool shape, and the machining area is filled in with a background color to depict how the material is being scraped off, so the filled area can be erased at high speed. The advantage is that it is possible to draw the process of material being scraped off one block at a time in parallel with the conversion process from the part program to NC data, and the NC data can be easily checked, even if there is no hardware required. There is.

[Brief explanation of the drawing]

Figure 1 is a block diagram of an automatic programming knob device that executes the method of the present invention. Figure 2 is an explanatory diagram of the material shape filling definition statement. Figure 3 is an explanatory diagram of the tool shape definition statement. FIG. 5 is an explanatory diagram of the processing area calculation method of the invention. 1.Automatic programming main body, 1a..Processor, IC-2..Pardobu 4-gram storage area, IC-3..N
C data storage area, 4...Graphic display device, FTP...Part program Patent applicant Fanuc Co., Ltd. agent Patent attorney ± 11 Fujichiki Figure 5 Figure 4

Claims (1)

[Claims] In a scraping figure drawing method in an automatic programming device that converts a part program created in an automatic programming language into NC data executable by the NC device, the part program includes a material filling definition statement and a tool shape definition statement. Insert it, read the part program one sentence at a time from the beginning, and if it is a material fill definition statement, output the material fill drawing command to the display device to fill and draw the material on the display screen, and if it is a tool shape definition statement, output the material fill drawing command to the display device. The tool shape is memorized, and if it is a cutting movement statement, the machining area is determined from the cutting movement statement and the tool shape, and a drawing command that fills the machining area with the background color is output to the display device to draw the state in which the material is being scraped off. A scraping figure drawing method that is characterized by the following.