Electric discharge machine with electrode or object vibration an

Details Electric discharge machine with electrode or object vibration an Electric discharge machine with electrode or object vibration an

1995-10-13

1997-10-14

Evans, Geoffrey S.

Electric heating

Metal heating

Cutting or disintegrating

219 6916, 219 6917, 219 692, B23H 100, B23H 732

Patent

active

056768605

ABSTRACT:
In an electric discharge machine and machining method for processing an object through electric discharge by impressing a voltage between a processing electrode and the object, the processing electrode and object are relatively vibrated by a vibrating part using a piezoelectric element while a gap between the processing electrode and object is properly retained at all times. The electric discharge is accelerated when the gap is small, whereas the insulated state is maintained when the gap is large. This kind of condition is stably produced in accordance with a frequency of the vibration. If the frequency is set in the range of 50-500 Hz, a shortcircuit or an arc state is less likely to occur. The vibration is effective to quickly discharge processing debris at the discharging gap.

REFERENCES:
patent: 3610865 (1971-10-01), Osenbruggen
patent: 3887782 (1975-06-01), Wohlabaugh
patent: 4267423 (1981-05-01), Bell, Jr. et al.
patent: 4365133 (1982-12-01), Inoue
patent: 5340959 (1994-08-01), Sawada et al.
Proceedings pp. 19-20 of 1994 National Conference of Denki Kako Gakkai issued Oct. 17, 1994 by Shadan Hojin, Denki Kako Gakkai, entitled "Vibration-Aided Electric Discharge Machining for Fine Holes" (with English translation).

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