Electric discharge machining system having a secondary power sup

Details Electric discharge machining system having a secondary power sup Electric discharge machining system having a secondary power sup

1994-01-31

1995-01-03

Evans, Geoffrey S.

Electric heating

Metal heating

Cutting or disintegrating

B23H 102

Patent

active

053788664

ABSTRACT:
An electronic discharge machining system in which an electrode and workpiece are coupled between first and second power supply circuits. The first power supply circuit includes a DC power source, a switching element, and a current limiting resistor, which are controlled by a control circuit. The second power supply circuit includes a machining gap status detecting DC power supply, which is composed of a voltage source and a controllable output impedance, and a switching element, all of which are controlled by a control circuit. The secondary power supply circuit is controlled by the control circuit, which sets and controls the voltage source and/or the output impedance of the machining gap status detecting DC power supply in accordance with machining conditions, such as the voltage detected across the machining gap.

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European Search Report, No Publication Date.

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