Wire-cut electric discharge machining method

Details Wire-cut electric discharge machining method Wire-cut electric discharge machining method

1983-09-01

1987-03-10

Pellinen, A. D.

Electric heating

Metal heating

Cutting or disintegrating

219 69C, 219 69M, B23H 706

Patent

active

046492526

ABSTRACT:
A wire-cut electric discharge machining system is provided with a high-current, short-pulse discharge circuit for producing a high-current, short-pulse discharge between a wire and a workpiece, a low-current, pulse discharge circuit for producing a low-current, pulse discharge between the wire and the workpiece, and a control unit to alternately use both discharge circuits and to control the relative movement of the wire with respect to the workpiece. Main cutting along a predetermined path by the high-current, short-pulse discharge circuit is followed by at least one second cutting along a path adjacent the main cutting path by the low-current, pulse discharge circuit for each predetermined section, thereby performing electric discharge machining of the workpiece at an overall reduction of time.

REFERENCES:
patent: 3578937 (1971-05-01), Sennowitz
patent: 3671705 (1972-06-01), Raznitsyn
patent: 3809848 (1974-05-01), Bell, Jr.
patent: 4104502 (1978-08-01), Ullmann et al.
patent: 4242555 (1980-12-01), Delpretti
patent: 4324970 (1982-04-01), Nanasawa et al.

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