Method of controlling electric discharge machine

Details Method of controlling electric discharge machine Method of controlling electric discharge machine

1982-07-16

1985-04-30

Paschall, M. H.

Electric heating

Metal heating

Cutting or disintegrating

219 69G, 219 69S, B23P 108

Patent

active

045146110

ABSTRACT:
Disclosed is a method of controlling backward movement in an electric discharge machine wherein a workpiece is subjected to electric discharge machining by moving an electrode and the workpiece across which a voltage is applied, relative to one another. The method comprises a step of detecting a state of the electric discharge machining in response to a retraction command, a step of selecting a class corresponding to the electric discharge machining state from among a plurality of stored classes of retraction control information items indicating retraction control conditions different from one another, and a step of relatively moving and controlling the electrode and the workpiece in the backward direction in accordance with the selected class of retraction control information items.

REFERENCES:
patent: 4049942 (1977-09-01), Balleys et al.
patent: 4249059 (1981-02-01), Bell, Jr. et al.
patent: 4263494 (1981-04-01), Martin
patent: 4335436 (1982-06-01), Inove

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