Electrical discharge machine with machining gap voltage control

Details Electrical discharge machine with machining gap voltage control Electrical discharge machine with machining gap voltage control

1991-11-27

1993-08-03

Evans, Geoffrey S.

Electric heating

Metal heating

Cutting or disintegrating

219 6918, B23H 102

Patent

active

052331482

ABSTRACT:
In an electrical discharge machining apparatus, the average machining gap voltage is controlled to be a predetermined value even if a discharging operation is interrupted. This is accomplished by providing a bypass circuit or an inverse voltage providing circuit that responds to an interruption in the discharging operation. By controlling the average machining gap voltage, electrolytic corrosion and magnetization of the workpiece is minimized.

REFERENCES:
patent: 3655936 (1972-04-01), Saito et al.
patent: 3755645 (1973-08-01), Kauffman
patent: 4335294 (1982-06-01), Inoue
patent: 4447713 (1984-05-01), Tsurumoto et al.
patent: 4450337 (1984-05-01), Inoue

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