High-speed reciprocating silking wire cut electrical discharge machining filament cutting self-limiting thread guide device

Abstract

The invention provides a high-speed reciprocating silking wire cut electrical discharge machining filament cutting self-limiting thread guide device, and belongs to the technical field of wire cut electrical discharge machining. The high-speed reciprocating silking wire cut electrical discharge machining filament cutting self-limiting thread guide device is characterized by comprising an upper self-limiting device, a molybdenum wire and a lower self-limiting device which are sequentially connected, installation positions of the upper self-limiting device and the lower self-limiting device aresymmetric, the structures are completely the same, a limiting device is composed of limiting blocking pieces, fixed holes, compression screws, feeding bolts, a limiting base and other assemblies, thelimiting blocking pieces are arranged at the left position and the right position to limit the vibration of wire electrodes, fixing nuts are fixed to the left position and the right position of the limiting base, the feeding bolts are used for fixing and adjusting the positions of the limiting pieces in the horizontal direction, the compression screws are used for fixing the positions of the limiting pieces in the vertical direction, the limiting base is a body of a self-limiting thread guide, and the limiting blocking pieces, the fixed nuts, the compression screws and the feeding bolts are installed on the limiting base. By adopting the high-speed reciprocating silking wire cut electrical discharge machining filament cutting self-limiting thread guide device, silking is simple, the life of the wire electrodes is long, and the quality of processing surfaces is good.

Description

technical field [0001] The invention relates to the field of wire electric discharge processing equipment, in particular to a high-speed reciprocating wire electric discharge wire cutting filament cutting self-limiting wire guide device. Background technique [0002] Wire EDM is to use the instantaneous high temperature generated by the pulsed electric spark discharge between the workpiece and the electrode wire to etch the workpiece material. Wire EDM can be divided into two forms: low-speed unidirectional wire EDM and high-speed reciprocating wire EDM according to the wire-feeding method and wire-feeding speed. The electrode wire of low-speed unidirectional wire EDM is mostly made of brass wire. During processing, the electrode wire runs in one direction at a speed of 0.03m / s-0.2m / s, and the electrode wire can only be used once; high-speed reciprocating Wire EDM is an original invention in my country. The electrode wire on it is mostly molybdenum wire. During the processin...

AI Technical Summary

Problems solved by technology

[0004] Although the existing ruby ​​wire guide and limit rod wire guide can control the spatial position of the electrode wire to a certain extent, these two wire guides also have obvious shortcomings

The limit rod wire guide restricts the electrode wire through the limit rod and the upper and lower guide wheels, but because the limit rod can only limit the electrode wire in a certain direction, it is less effective when processing parts with complex shapes. Difference

In addition, it is impossible to control the pressing amount of the electrode wire on the limit rod during processing, and it is difficult to control the contact wrap angle between the electrode wire and the limit rod. There is a cut on the limit rod, which makes the limit effect not good

The ruby ​​wire guide relies on the ruby ​​round hole to restrict the spatial position of the electrode wire. The round hole can restrict the electrode wire in any direction, but as the friction between the electrode wire and the round hole will cause the diameter of the round hole to become smaller and smaller. The larger the size, the worse the limiting effect, and the diameter of the round hole of the ruby ​​stopper is only about 0.01mm larger than the wire diameter, which aggravates the difficulty of threading

And as the wire diameter decreases, the difficulty and cost of manufacturing the round hole of the ruby ​​stopper increase

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