Method for controlling withdrawal of electrode in electric-disch

Details Method for controlling withdrawal of electrode in electric-disch Method for controlling withdrawal of electrode in electric-disch

1989-12-29

1991-11-12

Evans, Geoffrey S.

Electric heating

Metal heating

Cutting or disintegrating

B23H 100, B23H 718, B23H 720

Patent

active

050649850

ABSTRACT:
The method for controlling the withdrawal of the electrode in an NC electric-discharge machine permits a linear withdrawal of the electrode to a forward position at least two blocks preceding the present forward position from the workpiece according to a withdrawal command received by the NC unit and with a high efficiency while a workpiece is being machined with electric discharges made between the electrode and the workpiece with the former being forwarded in relation to the latter according to a control information including positioning commands given to the NC unit for each block.

REFERENCES:
patent: 4135070 (1979-01-01), Pfau et al.
patent: 4608476 (1986-08-01), Shimizu
patent: 4733040 (1988-03-01), Pelloni et al.
patent: 4891487 (1990-01-01), Nakata
patent: 4939334 (1990-07-01), Gruber et al.

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