JPH0730253Y2 - Wire cut electrical discharge machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Industrial field of application The present invention relates to a wire-cut electric discharge machine having machining positions such as horizontal and vertical directions.

2. Description of the Related Art In a conventional wire-cut electric discharge machine, as shown in FIG. 2, a wire electrode 3 is inserted between an upper nozzle 1 and a lower nozzle 2 each including an electrode guide, an energizing pin, etc. The two electrodes are opposed to each other with a gap, and the wire electrode 3 is transferred vertically or perpendicularly to the paper surface under the interposition of the processing liquid to perform the processing. Usually, the X-axis direction or Y
A wire electrode, which is a wire electrode, is transferred in the horizontal direction in the axial direction or in the vertical direction in the Z-axis direction to advance the processing.
In FIG. 2, 5 is an upper arm and 6 is a lower arm.

Problems to be solved by the invention However, since the angle at which the wire electrode can be tilted is small when chamfering the upper surface of the work piece or shaping the outer shape, the work piece is often mounted in correspondence with the wire electrode. I was fixing it. However, in order to process multiple surfaces of the work piece once set, it is necessary to transfer the wire electrode to the work piece in various directions such as horizontal, vertical, or diagonal directions.

In consideration of the above points, the present invention has an L-shaped or block-shaped guide arm detachably attached to the upper and lower arm portions of a wire-cut electric discharge machine, and the guide arm may be provided with a conducting pin or the like. A guide provided with a working liquid supply nozzle and the like is attached in an arbitrary direction, and the guide is used to transfer the wire electrode in the horizontal direction, the vertical direction, or any other inclined direction. The transfer is performed not only by one drive device but also by a drive device provided corresponding to each direction, such as relative movement of these wire electrodes and the workpiece. Are all designed to be done by an NC (numerical control) device.

With the above configuration, the guide arm can be attached and detached, and once the work piece is set, it is possible to perform various processing such as chamfering of multiple surfaces such as 6 surfaces without resetting, and cut shape Depending on the structure, the wire electrode can be moved in the horizontal direction, the vertical direction, or any other inclined direction. Processing can be smoothly performed with a simple configuration.

Embodiment FIG. 1 is a side view of an embodiment of the present invention, and the portions corresponding to FIG. As is apparent from comparison with FIG. 2, the upper nozzle 1 is removed, the shape guide arm 7 is attached, and guide rollers 8 and 9 for guiding the wire electrode 3 are provided, and the wire electrode 3 is obliquely attached to the workpiece 4. To do so. On the other hand, the lower nozzle 2 is also removed, the guide block 11 is attached to the lower arm 6, and the guide roller 10 is provided so as to be transported obliquely from the guide roller 9. The other 12 is a machining fluid injection nozzle. Although not shown, this guide roller 8,
A guide equipped with a current-carrying pin and a machining liquid supply nozzle is detachably provided as a block near 9, 10 to guide the wire electrode. The wire electrode 3 and the workpiece 4 are opposed to each other, and a pulse voltage is applied to the wire electrode 3 and the workpiece 4 from a machining power source (not shown) under the ejection of the machining liquid from the jet nozzle 12 to perform electric discharge machining. Is done. Wire electrode 3
Is an example in which the chamfering of the workpiece 4 is performed between the guide rollers 8 and 9 in a direction oblique to the X axis of the workpiece 4. In this case, although not shown, it is possible to prepare and use a guide arm having a guide on the arm with various shapes and sizes. 3 is a modification of FIG. 1 and uses a guide arm 7 of the shape shown in FIG. 1, whereas in FIG. 4 a linear bar-shaped jig 19, 20 corner jig 21,
A guide arm having 22 is attached to the upper arm 5 and the lower arm 6, and guide rollers 23, 24, 25 and 26 are appropriately attached, and the wire electrode 3 is rotated. Wire-cut electric discharge machining is performed under the injection of the machining fluid from the nozzle 12. Figure 4 shows guide roller 2
3, 24, 25, 26 shows an assembly bolt that constitutes an attachment with a guide piece 28 that can maintain an appropriate interval using a destant collar 27 with respect to the guide arm 19, etc.,
Various cutting operations by the wire electrode 3 can be performed.

As described above, in the device of the present invention, the guide arms of various shapes are attached to the arm, and the wire electrodes are appropriately combined in the X direction, the Y direction, and the Z direction by the guide rollers provided on the guide arm. It is designed so that desired processing can be performed while moving in the required direction.
In the controlled wire-cut electric discharge machine, use three or more guides for one wire electrode 1
It is possible to move to XY, XZ, XYZ, etc. by NC control, and in some cases it is possible to use two or more wire electrodes. By combining these, NC control can be performed and the workpiece once set In contrast, 6 sides, 8 sides, 1 without re-setting
Since various processing such as chamfering of multiple surfaces such as 2 surfaces can be performed, it is possible to process multiple surfaces while resetting the work piece to the wire electrode that moves only in one direction as in the past. In comparison, the processing time was reduced to about 1/5 to 1/10 and the processing accuracy was improved.

[Brief description of drawings]

FIG. 1 is a side view of an embodiment of the present invention, FIG. 2 is a side view of a conventionally known electric discharge machine, FIG. 3 is a side view of still another embodiment, and FIG. 4 is a set used for the guide roller of FIG. The side view of the attached bolt is shown. In the figure, 3 is a wire electrode, 4 is a workpiece, 7 is a guide arm, 8,
9,10,13,14,15,16,17 are guide rollers.

Claims (2)

[Scope of utility model registration request] 1. An upper nozzle device including an upper electrode guide attached to an upper arm 5 and a lower nozzle device including a lower electrode guide attached to a lower arm 6, the wire electrode 3 being subjected to a predetermined tension. Is stretched between the upper electrode guide and the lower electrode guide by means of renewal feeding in the axial direction of the wire electrode 3, and the wire electrode path supported and guided between the two guides is processed as a processing portion. In a wire cut electric discharge machine for moving an object 4 relative to one another across a machining gap to perform electric discharge machining with the presence of a machining liquid, a plurality of guide arms having one or more guides and a plurality of guide arms are provided. The upper and lower arm portions so that the processed portion of the wire electrode 3 is formed as a wire electrode path different from the wire electrode path between the upper electrode guide and the lower electrode guide. And means for attaching each detachably further the wire cut electric discharge machining apparatus, characterized in that where the structure may be provided a nozzle for supplying a machining liquid to a machining portion of a new wire electrode path. 2. A wire cut electric discharge machining apparatus according to claim 1, wherein a guide having an energizing pin and a machining liquid supply nozzle is provided in the vicinity of the guide as one block.