Electric discharge machining apparatus

Details Electric discharge machining apparatus Electric discharge machining apparatus

1997-11-17

1999-05-04

Evans, Geoffrey S.

Electric heating

Metal heating

Cutting or disintegrating

B23H 102, B23H 720, B23H 732

Patent

active

059001658

ABSTRACT:
An electric discharge machine apparatus has a numeric control unit which can optimally set jumping conditions without forcing the user to perform any complicated setting operation. The numeric control unit calculates an optimal jumping velocity from a value indicating a machine-allowable load for the electric discharge machining apparatus, a machining area according to the electric discharge machining conditions, and a machining gap length computed from the electric discharge machining conditions. The machining area is computed by the ratio between the proceeding velocity in machining and a discharge pulse frequency. The machining gap length is computed according to the current value of a machining current pulse as well as to a voltage loaded to the machining gap.

REFERENCES:
patent: 5117083 (1992-05-01), Kawamura
patent: 5428201 (1995-06-01), Kaneko et al.

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