Electric discharge machining apparatus with switch connection be

Details Electric discharge machining apparatus with switch connection be Electric discharge machining apparatus with switch connection be

1992-12-01

1994-05-24

Evans, Geoffrey S.

Electric heating

Metal heating

Cutting or disintegrating

200 83C, 219 6913, 335285, B23H 704

Patent

active

053150880

ABSTRACT:
In an electric discharge machining apparatus, a workpiece electrically connected to a body of the machine and a jig on which the workpiece rests are electrically isolated from each other. The body and the workpiece are selectively switched in open-circuit/short-circuit by a switch. Switching can be made on the stool or the workpiece. Further, the switch and the workpiece and the jig are connected to each other by a coaxial cable.

REFERENCES:
patent: 1633521 (1927-06-01), Edwards
patent: 2856565 (1958-10-01), Matulaitis
patent: 3192517 (1965-06-01), Werlin
patent: 3825705 (1974-07-01), Bourton
patent: 4215254 (1980-07-01), Ohki
patent: 4628172 (1986-12-01), Inoue
patent: 4633213 (1986-12-01), Venema
patent: 4788400 (1988-11-01), Aso et al.
patent: 4803327 (1989-02-01), Obara

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