Apparatus for detecting gap conditions in EDM processes with mon

Details Apparatus for detecting gap conditions in EDM processes with mon Apparatus for detecting gap conditions in EDM processes with mon

1977-12-13

1980-11-25

Reynolds, B. A.

Electric heating

Metal heating

Cutting or disintegrating

219 69P, B23P 102

Patent

active

042360579

ABSTRACT:
Apparatus for controlling an electric discharge machining process in which machining pulses are applied across a machining gap with a pulse duration and peak current preselected to attain a predetermined machining consequence or result. At least one monitoring pulse is interposed in the succession of machining pulses and is time-spaced from and totally independent of the machining pulses while being dimensioned to give rise to a current pulse in the machining gap. The current pulse is measured as to at least one characteristic and the gap condition is determined in response to this measurement.

REFERENCES:
patent: 2979639 (1961-04-01), Williams et al.
patent: 3988560 (1976-10-01), Losey et al.
patent: 3997753 (1976-12-01), Inoue
patent: 4021635 (1977-05-01), Losey et al.

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