Long-life guide wheel assembly for high-speed reciprocated WEDM machine tool

Abstract

A long-life guide wheel assembly for a high-speed reciprocated WEDM (wire electrical discharge machining) machine tool comprises two guide wheel bushings (6) and a stepped shaft (2), the long-life guide wheel assembly for the high-speed reciprocated WEDM machine tool is characterized in that the stepped shaft (2) is symmetrically provided with a bearing (1), a guide wheel seat (3) is installed on the bearing (1), a middle part of the guide wheel seat (3) is adhered with a V-shaped circular groove jewel ring (4) and a metallic check ring (5), and the guide wheel seat (3) is symmetrically provided with a diversion trench (20); the bearing (1) is externally equipped with a water retaining cover (17) of which a diameter is more than an external diameter of the bearing (1), and an external surface of the water retaining cover (17) of the bearing and an inner surface of a water retaining cover installation cavity (18) forms a labyrinth seal structure therebetween to prevent a working liquid from entering the bearing; and a lower part of the guide wheel bushing (6) is provided with liquid draining holes (13) and (19). The invention has simple structure, good tightness and long service life.

Description

technical field [0001] The invention relates to a wire electric discharge machining technology, in particular to a guide wheel assembly used for supporting and positioning an electrode wire in wire electric discharge processing so as to make it run smoothly, specifically a high-speed reciprocating wire electric discharge Long life guide wheel assembly for wire cutting machine. Background technique [0002] At present, the guide wheel assembly is a key component of the high-speed reciprocating wire electric discharge machine tool to maintain the spatial position accuracy of the electrode wire, and how to prolong the service life of the bearing and V-shaped positioning groove in the guide wheel assembly is the key component of this key component. The most critical question. [0003] In the process of wire electric discharge cutting, a large number of micron-sized metal erosion product particles will be generated after discharge, and they will be suspended in the working fluid...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the bearings in the existing high-speed reciprocating wire electric discharge wire-cutting wire positioning guide wheel assembly are subjected to the entry of working fluid with erosion products, resulting in damage to the bearings, seriously affecting the service life and the previous The service life of the V-shaped groove of the guide wheel is not long. Design a high-speed reciprocating wire EDM machine tool that can effectively prevent the working fluid from entering the bearing and increase the life of the V-shaped groove of the guide wheel to improve the overall life of the guide wheel. With long life guide wheel assembly

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