Wire electrical discharge machining apparatus

Details Wire electrical discharge machining apparatus Wire electrical discharge machining apparatus

2006-05-02

2006-05-02

Evans, Geoffrey S. (Department: 1725)

Electric heating

Metal heating

Cutting or disintegrating

C219S069130

Reexamination Certificate

active

07038158

ABSTRACT:
A wire cutting electric discharge machine has a high frequency voltage applying unit that applies a high frequency voltage and a direct current voltage applying unit applies a direct current voltage to the gap between the wire electrode and the workpiece. A detecting unit detects a low frequency component of a voltage occurring in the gap as a result of the electric discharge. The apparatus controls a feed rate based upon the state of the gap determined by the detecting unit.

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patent: WO-94/00265 (1994-01-01), None

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