JPS63105822A - Wire electric discharge machine - Google Patents

Abstract

PURPOSE:To enable automatic cutting off of a number of profile shapes, by a method wherein an electrode for wire electric discharge, serving to cut off the uncut part of a profile shape, is situated separately from a wire electrode for processing. CONSTITUTION:A number of profile shapes 6a-9a are continuously machined on a workpiece 5 on a table 10 by means of a wire electrode 1. In this case, machining is completed in a state in that uncut parts E-H are left before a final point is cut. The uncut parts E-H are cut off, as shown in, for example, a profile shape 6a, by using an electrode 13 for electric discharge machining held to a chuck part 14. This constitution forces scraps cut off from the workpiece 5 to be dropped on the table 10 without interference with a lower arm 4, resulting in the possibility to automatically machine workpieces in an interlocking way.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a wire electrical discharge machining device that automatically cuts off the uncut portion of a workpiece.

[Conventional technology]

FIG. 3 is a perspective view showing an example of a conventional wire electrical discharge machining device. In FIG. Reference numeral 4 designates an upper holder equipped with a guide and a nozzle for guiding the wire electrode 1, and 4 a lower arm equipped with a lower holder (described later). 5 is the workpiece, 6 is the contour shape just before cutting off the uncut portion A, 1.8.9 is the contour shape with the uncut portions B, C, and D left, respectively, and 10 is the table on which the workpiece 5 is fixed. , 10a are members for fixing the workpiece 5. Fig. 4 is an enlarged front view of the main part of Fig. 3, and 3a has the same function as the upper support 3 equipped with the guide and nozzle shown in Fig. 3, and is attached to the lower arm 4. The lower support 5a is a scrap cut off from the workpiece 5.

The operation of the conventional wire electric discharge machining apparatus configured as described above will be explained as follows. The wire electrode 1 shown in FIG. It is further guided in the A direction by the lower guide in 3a and collected. By the way, when machining a large number of contour shapes 6 to 9 on the workpiece 5 fixed to the table 10 by wire electric discharge, these many contour shapes 6 to 9 will be machined in succession, so each Without machining to the final point of the contour shape, uncut portions B, C, and D are left in contour shapes 7 to 9 shown in Fig. 3, respectively.
Finally, as shown in outline shape 6, uncut portion A is machined by wire electric discharge, and uncut portions B, C, and D are machined.
When uncut parts A, B, C, and D are machined by wire electric discharge machining as described above, scrap 5a shown in FIG. It will fall and interfere with the lower arm 4. Therefore, if all of the large number of contour shapes 6 to 9 are to be cut off, all the scraps 5a must be removed manually.

[Problem that the invention seeks to solve]

According to the conventional wire electrical discharge machining apparatus configured as described above, when cutting off the uncut portion of the workpiece, it is necessary to manually remove the scrap that has fallen onto the lower arm, which is not only extremely troublesome but also There was a problem in that it was not possible to automatically cut off a large number of contour shapes.

The present invention has been made to solve the above-mentioned problems, and provides a wire electrical discharge machining device that can automatically cut off a large number of contour shapes without the need to manually remove generated scrap each time. The purpose is to

[Means for solving problems]

The present invention has been made to achieve the above objects,
The present invention provides a wire electrical discharge machining device which is provided with a wire electrical discharge machining tool for cutting off an uncut portion of a contour shape separately from a wire electrode for processing.

[Effect]

The contour shape is continuously machined using a wire electrode while leaving an uncut portion on the workpiece, and the remaining uncut portion is further processed and cut off using an electrode electric discharge machining machine provided separately from the wire electrode.

〔Example〕

FIG. 1 is a perspective view showing an embodiment of the present invention, and FIG. 2 is an enlarged front view of the main part of FIG. Note that parts having the same functions as those in FIGS. 3 and 4 are given the same symbols, and explanations thereof will be omitted. In the figure, 11 is the Z axis for attaching the upper support 3;
2 is a drive motor that automatically positions the Z-axis 11; 13 is an electric discharge machining electrode provided separately from the wire electrode 1;
14 is a chuck portion that holds the electrode 13 for electrical discharge machining;
It is attached to a U-shaped arm 15 attached to the shaft 11. Therefore, this electrical discharge machining electrode 13 is located apart from the lower frame 4. 6a shows the contour shape of the uncut portion E being machined by the electric discharge machining electrode 13; 7
a, 8a, and 9a are contour shapes with uncut portions F, G, and H remaining. Note that 5b shown in FIG. 2 is scrap that has been cut off from the workpiece 5 and fallen downward.

A detailed explanation of the present invention configured as above is as follows. First, by wire electrode l, table lO
A large number of contour shapes 6a to 9 are formed on the workpiece 5 fixed above.
Continuously process a. In this case, when machining each of the contour shapes 6a to 9a using the wire electrode 1, the machining is completed with uncut portions E, F, G, and H remaining without cutting to the final point. Next is the uncut portion E of the contour shapes 6a to 9a.

F, G, and H are cut off using an electric discharge machining tool i13 held in the chuck part 14, for example, as shown in the outline shape 6a.

In this way, since the wire electrode 1 is not used to cut off the uncut portions IE, F, G, and H, the scrap 5b cut off from the workpiece 5 can be cut off without any interference with the lower arm 4. , as shown in FIG. 2, falls below the table 10, allowing continuous automatic machining of the workpiece.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, the uncut portion of the contour shape machined using the electrode for electric discharge machining provided at a position different from the pole of the wire is cut off. Unlike cutting off with electrodes, there is no interference at the bottom, and the cut off scraps are removed under the table, allowing continuous unmanned operation.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of the present invention, FIG. 2 is an enlarged front view of the main part of FIG. 1, FIG. 3 is a perspective view showing an example of a conventional wire electric discharge machining device, and FIG. FIG. 3 is an enlarged front view of the main part of FIG. 3; 1...Wire electrode, 5...
- Workpiece, 5a. 7a, 8a, 9a... Contour shape, 13.
...... Electrodes for electrical discharge machining, E, F, G, H...
・・・・・・Uncut parts In each figure, the same reference numerals are the same.
or a corresponding portion thereof.

Claims (1)

[Claims] 1. A wire electrical discharge machining device for machining a workpiece with a wire electrode, characterized in that the wire electrical discharge machining device is provided with an electrical discharge machining electrode that cuts off an uncut portion of a contour shape that has been machined separately from the wire electrode.