Electrical discharge machining method and apparaus with non-load

Details Electrical discharge machining method and apparaus with non-load Electrical discharge machining method and apparaus with non-load

1995-03-07

1996-08-13

Evans, Geoffrey S.

Electric heating

Metal heating

Cutting or disintegrating

219 6916, B23H 102, B23H 718

Patent

active

055458700

ABSTRACT:
An electrical discharge machining method includes the steps of intermittently applying a voltage pulse to an electrical discharge machining gap between a machining electrode and a work in accordance with predetermined ON and OFF times to generate discharge, relatively moving the machining electrode and the work during generation of discharge to perform electrical discharge machining, detecting a discharge frequency during electrical discharge machining, calculating a nonload time by subtracting the predetermined ON and OFF times from a discharge repetition period based on the detected discharge frequency, and controlling a relative position between the machining electrode and the work on the basis of the calculated nonload time.

REFERENCES:
patent: 2979639 (1961-04-01), Williams et al.
patent: 3916138 (1975-10-01), Pfau
patent: 4292490 (1981-09-01), Bell, Jr. et al.
patent: 4703144 (1987-10-01), Goto et al.
patent: 5276301 (1994-01-01), Kohsaka et al.
patent: 5410118 (1995-04-01), Boccadoro

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