JPH03109607A - Cad/cam device - Google Patents

Abstract

PURPOSE:To visually confirm the difference of working loci between the upper and lower surfaces of a working subject as well as a sloping part of the subject by displaying those working loci and at the same time displaying a taper angle at a squint part. CONSTITUTION:An information input means 41 inputs the information on a working shape, the thickness of a working subject, the offset direction, and a taper angle for the taper working and at the same time designates the working direction and route. These input information are stored in an information storage means 42. Then an information analyzing means 43 operates the working loci of the upper and lower surfaces of the working subject based on the information stored in the means 42. The operated loci are displayed on a display device 45 via an information display control means 44. In this case, the loci of both surfaces are displayed in different colors together with display of the taper angle. Thus it is possible to visually confirm the difference of loci between the upper and lower surfaces of the working subject as well as a sloping part of the subject.

Description

Detailed Description of the Invention (Industrial Application Field) This invention is a CAD/CAM that calculates machining data while displaying machining information of a wire electrical discharge machining device on a display.
It is related to the device.

[Prior art] As shown in Fig. 5, a wire electrical discharge machining device capable of performing taper machining uses a wire above a table (2) on which a workpiece (1) is placed and moved in two dimensions. (3)
There is an upper wire guide (5) whose position can be changed by a drive mechanism (4) while the wire is passed through it, and a lower wire guide whose position is fixed by simply passing the wire (3) under the table (2). (6) is provided, and the wire (
3) is drawn out from the wire supply mechanism (7), then the roller (8), the upper wire guide (5), and the workpiece (1)
, the lower wire guide (6) and the rollers (9), and then the wire is taken up by the wire collection mechanism (IO). Here, the table (2) has an X-axis drive section (11) and a Y-axis drive section (12), and the drive mechanism (4) has a U-axis drive section (13) and a V-axis drive section (14). Each of these drive units is controlled by a numerical control device (16) that sets the NG tape (15).

However, the NG tape (15
) to the numerical control device (16), and set the table (
2) and the drive mechanism (4), and also controls the wire (
3) is discharged between the driven object (1) and the wire (3) while being fed and collected, taper machining corresponding to the machining data can be performed.

In this case, a CAD or CAMAM device is required to calculate processing data, and in this specification, these devices are collectively referred to as a CAD/CAM device.

FIG. 6 is a block diagram showing this type of (:AD/[:AM device. In the figure, a CPU that processes shape information
(21), a memory (22) that stores data, a printer (23) that records shapes and characters, and a paper tape input/output device (24) that punches various data into the paper tape and reads the punched paper tape. , a CRT display (25) for displaying shapes and characters, a keyboard (26) for inputting data, and a mouse device (or A tablet device (27) is connected by a bus (29) to an auxiliary storage device (28) in which information to be saved is written and information to be read is read.

Next, the operation of this CAD/CAM device will be explained.

When shape information is input using the keyboard (26) or mouse device (27), it is sent to the CPU via the bus (29).
(21) and stored in the memory (22), the shape is displayed on the CRT display (25).

This shape consists of a point (31) and a line segment (32) as shown in Figure 7.
) and the circular arc (33) are drawn so as to be continuously connected to form a machining path. As shown in FIG. 8, the machining path can be changed by hitting the minus part of the point (31), line segment (32), and arc (33) that make up the machining path with the mouse device a (27). By extracting the part and inputting the taper angle using the keyboard (26), the taper angle of the extracted processing path is stored in the memory (22).

Next, in order to determine the machining order and machining direction, as shown in FIG. Hit the processing route (35). At this time, the machining path is A-B-hC→D-E as shown in Figure 9(b).
→F is rearranged so as to be connected continuously, and the order is stored in the memory (22).

Next, determination of the offset direction will be explained. This offset direction determines whether the machining path will be shifted to the left or right by the wire portion with respect to the machining direction. Enter either left or right using the keyboard (6) and store it in the memory (22). .

The above data is read from the memory (22) and the CPU (
21), the machining route immediately after calculation is displayed on the CRT display (29) via the bus (29).
5) and display it in a different color.

In this case, only the machining path was displayed on the CRT display (25) as shown in FIG. 7, and the taper angle, offset direction, and machining direction were not displayed.

[Problems to be solved by the invention]

Conventional CAD/CAM devices display the machining path on the CRT display when calculating machining data, but the taper angle,
Since the offset direction and machining direction are not considered,
There was a problem in that it was not possible to visually confirm the difference in trajectory between the bottom and top surfaces of the workpiece and the sloped parts.

This invention was made in order to solve the above-mentioned problems, and it is possible to visually check the difference in the machining trajectory between the lower and upper surfaces of the workpiece, as well as the sloped part.
The purpose is to obtain an M device.

[Means to solve the problem]

A CAD/CAM device according to the present invention calculates machining data while displaying machining information of a wire electric discharge machining device on a display, and includes a machining shape when performing taper machining,
Information input means for inputting each information of the thickness, offset direction, and taper angle of the workpiece and specifying the machining direction and route; and information analysis means for calculating machining trajectories for the lower and upper surfaces of the workpiece, respectively displaying the calculated machining trajectories for the lower and upper surfaces of the workpiece on the display, and displaying the taper angle of the inclined portion on the display. and information display control means.

(Function) In this invention, since the machining trajectories of the lower and upper surfaces of the workpiece are displayed separately, it is possible to visually confirm the difference between the machining trajectories of the lower and upper surfaces of the workpiece. The angle of inclination can also be seen from the display.

〔Example〕

FIG. 1 is a block diagram showing one embodiment of the present invention.

In the figure, information inputting means (41) is provided for inputting information on the machining shape, thickness of the workpiece, offset direction, and taper angle when performing taper machining, as well as specifying the machining direction and route. Each piece of information is stored in an information storage means (42
). Further, based on the information stored in the information storage means (42), the information analysis means (43)
calculates the machining trajectories for the lower and upper surfaces of the workpiece. Each trajectory calculated in this way is displayed by the information display control means (44
) is displayed on the display (45), but at this time,
The machining trajectory of the bottom and top surfaces is displayed in different colors, and
Display taper angle.

Each function shown in Fig. 1 can be realized with the same hardware configuration as the conventional device, so the hardware shown in Fig. 6 is used and the processing shown in the flowchart in Fig. 2 is performed. The specific operation of this embodiment will be explained as follows.

First, use the keyboard (26) and mouse device (27) to input shape information for the machining path (step 101).
), Next, the thickness, offset direction, and taper angle of the workpiece are input using the keyboard (26) and mouse device (27) (step 102). The machining direction and machining path are determined using the mouse device (27) (step 103).

Next, from the data obtained through the above input operations, that is, the thickness of the workpiece, the offset direction, the taper angle, the machining direction, and the original machining path, the bottom surface of the workpiece that is different from the original machining path or Calculate the machining trajectory of the top surface.

FIG. 3 is an explanatory diagram for explaining this. That is, a figure F is defined on the upper surface U of a workpiece with a thickness W placed on the table (2), and the taper angle θ is set to be positive and the processing direction is set clockwise. At the same time, by setting the offset direction to the left, the external dimensions are ensured, and the machining trajectories of the upper and lower surfaces corresponding to the side view of FIG. Furthermore, by defining the figure F on the lower surface of the workpiece and setting the taper angle θ to be negative, the machining trajectories of the upper and lower surfaces corresponding to the side view of FIG. 3(b) are calculated.

In the same way, define the figure F on the bottom surface of the workpiece, set the taper angle θ to be negative, set the machining direction to the left, and set the offset direction to the right to form the outer shape. The dimensions are secured, and the machining trajectories of the upper and lower surfaces corresponding to the side view of FIG. 2(C) are calculated. Furthermore, if a figure F is defined on the lower surface of the workpiece and the taper angle θ is set to a negative value, a machining locus corresponding to the side view of FIG. 2(d) is calculated.

Note that if the offset direction is reversed with respect to the same processing direction, the inner dimension of the processed shape is ensured, but since these are not directly related to the present invention, detailed explanation will be omitted.

The machining trajectories of the upper and lower surfaces calculated in this way are displayed on the CRT display (25) using different colors (steps 105 and 106'. Finally, the machining trajectories of the upper and lower surfaces are The taper angle is displayed with the letter A attached.

Thus, the image shown in FIG. 4 is displayed on the CRT display (25).

〔Effect of the invention〕

As is clear from the above description, according to the present invention, the machining trajectories of the lower and upper surfaces of the workpiece are displayed, so the difference between these can be visually confirmed, and the taper angle is also displayed in the oblique view. This has the effect of allowing you to check the changes.

[Brief explanation of drawings]

Fig. 1 is a block diagram showing an embodiment of the present invention, Fig. 2 is a flowchart for explaining the operation of the embodiment, and Fig. 3 is a flowchart for explaining the operation of the embodiment. 4 is an example of a display screen of a display device constituting the same embodiment, FIG. 5 is a schematic configuration diagram of a wire machining discharge device to which the present invention is applied, and FIG. 6 is a diagram showing a conventional CAD/ CA
Block diagram of the M device, FIGS. 7, 8 and 9 (a
), (b) 41... Information input means, 42)... Information storage means, 43... Information analysis means, 44... Information display control means, 45)... Display device. In addition, in each figure, is shown. Same symbols indicate the same or equivalent parts

Claims (1)

[Claims] In a CAD/CAM device that calculates machining data while displaying machining information of a wire electrical discharge machining device on a display,
An information input means for inputting information on the machining shape, thickness of the workpiece, offset direction, and taper angle when performing taper machining, as well as specifying the machining direction and route, and information input from the information input means. an information analysis means that calculates machining trajectories for the lower and upper surfaces of the workpiece based on the information analysis means, and displays the calculated machining trajectories for the lower and upper surfaces of the workpiece on the display, respectively; A CAD/CAM device comprising information display control means for displaying a taper angle on the display.