Method and apparatus for discharge machining polygonal contours

Details Method and apparatus for discharge machining polygonal contours Method and apparatus for discharge machining polygonal contours

1980-10-07

1983-08-23

Shaw, C. C.

Electric heating

Metal heating

Cutting or disintegrating

219 69V, 219 69C, B23P 112

Patent

active

044006063

ABSTRACT:
A discharge machining method for machining a workpiece by causing electric discharge between the workpiece and the machining electrode and an apparatus for practicing the method wherein, with the electrode confronting the workpiece in a primary machining direction and in the direction of a plane substantially perpendicular to the primary machining direction, the relative displacement of the electrode and workpiece is controlled in such a manner that a space is maintained between the electrode and the workpiece so that electric discharge occurs therein. The electrode is moved towards the intersections of straight lines which are parallel to and equally spaced from the contour of the electrode whereby the electrode is uniformly consumed. Very little abnormal arcing can occur. The machined workpiece has an excellent final configuration.

REFERENCES:
patent: 3564190 (1971-02-01), Kandajan et al.
patent: 4152570 (1979-05-01), Inoue et al.
patent: 4310742 (1982-01-01), Pfau

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