Rotary electric wire feeding mechanism for numeric control micro-hole electrical discharge machining (EDM) machine tool

Abstract

The invention relates to a rotary electric wire feeding mechanism for a numeric control micro-hole electrical discharge machining (EDM) machine tool, with the advantages of high operational efficiency, high machining positioning accuracy, high vibration frequency, adaptability to various machining conditions, and applicability to large-scale production. An upper grip holder is fixedly installed at the lower end of a main shaft, a grip clamp is fixedly installed inside the grip holder, the grip clamp comprises a grip press plate and a V-shaped grip block, a grip press block is hinged on the upper grip holder through a grip cylindrical pin, a grip spring is also arranged inside the upper grip holder and butted against the grip press block, and the grip press block butts against the grip press plate; and a guide mechanism comprises a guide bracket, a lower grip holder is fixed on the guide bracket, a guide clamp is fixedly installed inside the lower grip holder and comprises a guide press plate and a V-shaped guide block, a guide press block is hinged with the lower grip holder through a guide cylindrical pin, a guide spring is also arranged inside the lower grip holder and butts against the guide press block, the guide press block butts against the guide press plate, and the grip clamp and the guide clamp are corresponding in the vertical direction.

Description

Technical field [0001] The invention relates to a micro electrode processing mechanism, in particular to a rotary wire feeding mechanism of a numerical control electric spark micro-hole processing machine tool. Background technique [0002] At present, most of the existing micro-hole processing machine tools can only process holes with a diameter of 0.2 mm or more, and the processing methods are mostly mechanical drill processing, which has low processing efficiency and easily damaged drills. The machining of holes with a diameter of less than φ0.2mm is still a difficult subject in China. Although the current micro-hole EDM machine tools on the market have their own unique methods for micro-electrode clamping and wire feeding, the electrode The wire cannot be rotated in the clamping state, so it has the disadvantages of low work efficiency, poor roundness of the processing hole, low processing accuracy, etc., and it is not suitable for high-precision, high-frequency, high-volume ...

AI Technical Summary

Problems solved by technology

[0002] At present, most of the existing micro-hole processing machine tools can only process holes with a diameter of φ0.2mm or more, and the processing methods mostly use mechanical drills.

The processing of holes with a diameter below φ0.2mm is still a difficult problem in China. Although the micro-hole EDM machine tools currently on the market have their own unique methods for micro-electrode clamping and wire feeding, the electrode The wire cannot be rotated in the clamped state, so it has the disadvantages of low work efficiency, poor roundness of the machined hole, and low machining accuracy. It is not suitable for micro-hole machining on high-precision, high-frequency, and large-scale assembly lines.

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