JPS61230842A - Machining shape display in electric discharge machining - Google Patents

Abstract

PURPOSE:To make machining shape easier to be seen and make image itself displayed on a cathode-ray tube simpler and easier to be understood by 3- dimensionally displaying the shape of a work to be electric discharge machined on the Braun tube of a display device both before and during machining. CONSTITUTION:By decoding numerically controlled program in an electric discharge machining, coordinates A1, B1 and C1 are computed and the computed data are sent to a display program 29. This display program 29, using the computed data, displays on the CRT 30. When computed coordinate data A1-C1 have been already sent through a motion program 28 to the display program 29 and then newly computed data A2-C2 are additionally sent from the motion program 28, solid lines l1-l3 respectively joining A1-C1 and A2-C2 are drawn with the display program 29, followed by drawing planes Z5, Z2 and Z1. Then a broken line L joining A2 and C2 corresponding to the side surface is drawn. Similarly solid lines l'1-l'3 are drawn.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method for displaying the electrical discharge machining shape when, for example, electrical discharge machining is performed on a steel plate into a prespecified shape, and in particular, the present invention relates to a method for displaying the electrical discharge machining shape in a three-dimensional manner. This makes it easier to understand the machined shape.

[Conventional technology]

Conventionally, as an electric discharge machining apparatus, one shown in FIG. 5 is known. In this figure, reference numeral 1 denotes a movable table, and the nuclear movable table has a first sliding part 2 that can slide only in the Y-axis direction, and a first sliding part 2 that can slide only in the X-axis direction with respect to the first sliding part. and a movable second sliding portion 3, and these sliding portions 2.5 are configured to be driven by separate drive motors 4, 5 and slid in the above-mentioned directions, respectively. has been done. This is a 6-piece processing power supply, and the processing power supply is composed of a DC power supply 7, a switch lag transistor 8, a switching control circuit 9 for controlling on/off of the switch lag transistor, a charging capacitor 10, and a charging resistor 11. . 12 is a machining fluid supply device, and the machining fluid supply device is composed of a tank 13 and a resistivity adjustment device 14. Reference numeral 15 denotes a control device, which includes a numerical control device that controls the drive current to the drive motor 4.5 by a numerical control program, and a cathode ray tube display device that displays numerical information related to this numerical control. It has been incorporated. A wire 16 is guided by a wire guide 17, and after contacting a power supply section 18, which will be described later, is sent by a tension roller 19 and wound around a wire winding row 20. (9) This wire 16 is let out from the wire payout roller 21, comes into contact with a power supply section 22, which will be described later, and is then guided by a wire guide 26. Above power supply! 1s18.22Vi is connected to the negative side of the processing power supply 6 described above. Reference numeral 24 denotes a pump, which supplies the machining liquid 25 from the tank 13 to the nozzle 26. Reference numeral 27 denotes a workpiece, which is placed on the sliding portion 6 of the movable table 1 described above. The negative side of the processing power source 6 is connected to the sliding part 2 and the workpiece 27 via the wire 16, and the positive side is contacted (connected) to the workpiece 27 as shown by the arrow. There is.

A conventional electrical discharge machining device is configured as described above, for example,
The workpiece 27 is fixed, and the movable table 1 mentioned above is moved in the X-axis direction by the drive motor 5, and also by the drive motor 4.
are respectively driven in the Y-axis direction. These drive motors 4 and 5 are controlled by the above-mentioned control device 15, and the position of the movable table 1 is determined. Also, wire 1
6 is sent by the tension roller 19, and at the same time,
A pulse voltage from the machining power source 6 is applied via the power supply 18.22. On the other hand, machining fluid 25 whose specific resistance has been adjusted is supplied from machining fluid supply device 12 between workpiece 27 and wire 16 , which acts as a medium to generate electric discharge, which causes workpiece 27 to control device 15 . Electric discharge machining is performed according to control signals based on a numerical control program. The control device 15 controls the electrical discharge machining described above using the program for order value control described above, and also displays the information using the cathode ray tube display device.
The wire coordinates and processing conditions ti are shown.

[Problem that the invention seeks to solve]

In the conventional electric discharge machining apparatus as described above, when a taper device or the like is attached and the shape of the workpiece 27 becomes complicated, the coordinate values shown on the display device in the control device 15, etc. The problem is that the machined shape cannot be easily determined, making it difficult to inspect numerical control programs.

This invention was made in order to solve this problem, and it is possible to draw the machining shape of the workpiece on the cathode ray tube of the display device (by using graphic water supply) during or before machining. The object of the present invention is to provide a method for displaying electrical discharge machining shapes that allows an operator to easily understand the shapes.

[Means for solving problems]

The electrical discharge machining shape display method according to the present invention obtains data of the machined shape on multiple planes from a program for numerical control in electrical discharge machining, and uses this data to display the machined shape within the multiple planes on a cathode ray tube of a display device. In addition to displaying the outline of the image, lines connecting key points of the outline within the plurality of planes are also displayed.

[Effect]

In the present invention, data on machining shapes on a plurality of planes obtained from a program for numerical control in electric discharge machining is displayed on a cathode ray tube of a display device.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS The method for displaying electrical discharge machining shapes of the present invention will be explained below with reference to figures based on one embodiment. Fig. 1 is an example of a figure drawn by the electric discharge machining shape display method according to the present invention, Fig. 2 is a diagram for explaining the process of drawing the displayed figure in Fig. 1, and Fig. 6 is a diagram showing the creation of the displayed figure in Fig. 1. The ninth program configuration diagram,
FIG. 4 is a flowchart of a process for creating the display graphic shown in FIG. 1.

In FIG. 6, reference numeral 28 is a motion program, and the motion program is mainly made by decoding a numerical control program to obtain coordinate data (numerical control coordinates) (A, B,
C) is output. 29 is a display program 29, which displays the coordinate data (A, B, C) sent from the motion program 28.
A figure is displayed on the cathode ray tube 60 of the display device based on the figure.

Next, the operation will be explained. The motion program 28 described above decodes the numerical control program and calculates each coordinate value ("l") of AI*B1*c shown in FIG.
*yt l Zt)・(xt, )'to zt)
+ (”s, )'so z3) on the CRT 6
0 is displayed based on the above calculated data. The motion program 28 has already calculated the coordinate value calculation data Al (
”I + 3'l s zl ) + Bl (x!
+Yt* Zt)+ Ct (Xse 3's+ zs
) is sent to the display program 29 and is in good condition, new calculation data At (
x; r I * Z't ) +Bt ('! t
)'I * z/, ) + c, (x's I y
When S l z/, ) is sent, the Usagi ζ play program 29 draws a solid line 4 + 't e zs connecting AI, kV s B1, Bt, c, and C1, respectively, and as a result, as shown in FIG. Also shown in plane Z5. Z2.
Zl is drawn. After these planes are drawn, a broken line connecting the sides A and C1 is drawn. Next, motion program 28 and calculation data A are generated.

('1 + ylI t "1), Bs(41!'
x * Z't ) * c, (x's e fs
* When Z' is sent, solid lines t', , t', , t' are drawn in the same way as the solid line 4m4+4 above.

By repeating the above operations, data on the machining shape on multiple planes is obtained from the numerical control program in electric discharge machining, and using this data, the outline of the machining shape on multiple planes is displayed on the cathode ray tube of the safety device. In addition to displaying
Lines connecting key points of the contour shape within the plurality of planes are also displayed, and as a result, a figure as shown in FIG. 1, for example, is drawn.

As shown in FIG. 4, the processing flow is as follows: The display program 29 receives the calculation data from the motion program 28, and executes the calculation data as indicated by the solid line 11.1. .

t, and then a dashed line is drawn.

The shape of shallow water drawn in this way becomes a three-dimensional representation,
As shown in Figure 1, we created a three-dimensional graphic by inserting lines between the blocks of the numerical control program to make it easier to see, but depending on the way the motion program data is sent, we can display the center of an arc, etc. You can also.

Further, in the above embodiments, a wire electrical discharge machining apparatus has been described, but any processing apparatus having a control device that enables three-dimensional ammonium chloride can produce effects similar to those of the above embodiments.

Furthermore, as the lines inserted between the above-mentioned blocks, broken lines, dashed lines, etc. may be used. [Effects of the Invention] As explained above, the present invention provides multiple lines obtained from a numerical control program in electric discharge machining. Based on the data of the machined shape on a plane, the outline of the machined shape in multiple planes is displayed on the cathode ray tube of the display device, and lines connecting important points of the outline in the plurality of planes are also displayed. Therefore, even when compared with, for example, a figure whose sides are filled in, the shape is easier to see, and the figure itself can be made simpler and easier to understand.

[Brief explanation of the drawing]

FIG. 1 is a diagram illustrating the following figure according to the present invention, FIG. 2 is a diagram for explaining the process of drawing the disaster figure shown in FIG.
The figure is a program configuration diagram for creating the display figure shown in Figure 1, Figure 4 is a process flowchart for creating the display figure shown in Figure 1, and Figure 5 is a configuration showing a generally used electrical discharge machining device. It is a diagram. Zl @ 11 * t8 ” solid line, L: broken line.

Claims (1)

[Claims] Data on the machined shape on multiple planes is obtained from a program for numerical control in electrical discharge machining, and this data is used to display the contours of the machined shape on multiple planes on the cathode ray tube of the display device, as well as to display the contours within the multiple planes. A method for displaying an electrical discharge machining shape, characterized in that lines connecting key points of a contour are also displayed.