Wire pressing device of electric spark numerical control wire cutting machine tool

Abstract

The invention discloses a wire pressing device of an electric spark numerical control wire cutting machine tool. The wire pressing device comprises a base and an electric spark wire, wherein a first sleeve and a fixing box are fixed on the outer surface of the front end of the base through screws; the fixing box is arranged below the first sleeve; clamping teeth are uniformly welded on the upper surface of the fixing box; a lever is arranged on the inner side of the fixing box; a first spring and a stop block are arranged on the inner side of the first sleeve; a second sleeve is arranged on the right side of the fixing box; the second sleeve is fixedly connected with the base through screws; a second spring and an ejector block are arranged on the inner side of the second sleeve; a limiting block is arranged above the second sleeve; the limiting block is fixedly connected with the base through screws; the electric spark wire is arranged above the ejector block; and a first guide wheeland a second guide wheel are arranged on the right side of the electric spark wire. The wire pressing device is provided with an emergency stop structure, so that the electric spark wire can be rapidly stopped, and the tightness of the combination part between the upper guide wheel and the lower guide wheel is improved.

Description

technical field [0001] The invention relates to the technical field of electric discharge wire cutting machine tools, in particular to a wire pressing device of electric discharge numerical control wire cutting machine tools. Background technique [0002] The wire pressing device is an important part of the EDM wire cutting machine tool. It is mainly composed of four sets of guide wheels, which play the role of positioning the trajectory of the EDM wire. [0003] When the existing wire pressing device is applied to the EDM wire-controlled wire cutting machine tool, it only has the function of positioning the trajectory of the EDM wire. Since the EDM wire is a high-temperature operation and has a certain service life, the EDM wire It often breaks. After the breakage, the electric spark wire loses its tension, and it will bounce back to the wire roller and wind it for several turns before stopping. When overhauling, it is necessary to find the head of the electric spark wire a...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a wire pressing device for an electric discharge numerical control wire cutting machine tool to solve the problem that there is no emergency stop structure in the above-mentioned background technology, and the joint between the upper and lower guide wheels is easy to run.

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