Electric discharge contour machining method

Details Electric discharge contour machining method Electric discharge contour machining method

1991-11-15

1993-04-06

Evans, Goeffrey S.

Electric heating

Metal heating

Cutting or disintegrating

219 6915, 219 6916, B23H 100, B23H 732

Patent

active

052005917

ABSTRACT:
An electric discharge contour machining method in which a plurality of rod-shaped portions having different outer diameters on one rod-shaped electrode are used to machine the contour shape of a workpiece. The workpiece is selectively machined in any of a plurality of contours by the single electrode having an optimum electrode diameter for each selected contour. Specifically, the method uses one rod-shaped electrode having a plurality of rod-shaped portions, each portion having a different outer diameter such that the workpiece contour having a small inner corner of first radius R is machined by the electrode portion having a small outer diameter and the workpiece contour having a large inner corner of second radius R is machined by the electrode portion having a large outer diameter.

REFERENCES:
patent: 2813966 (1957-11-01), Matulaitis
patent: 3271848 (1966-09-01), Montandon
patent: 3440156 (1969-04-01), Dickson
patent: 3531615 (1970-09-01), Zammit
patent: 4096371 (1978-06-01), Lozon
patent: 4288675 (1991-09-01), Inoue

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