Electrical discharge machining apparatus including a shield for

Details Electrical discharge machining apparatus including a shield for Electrical discharge machining apparatus including a shield for

1987-05-13

1988-12-20

Pellinen, A. D.

Electric heating

Metal heating

Cutting or disintegrating

219 69W, B23H 702

Patent

active

047926538

ABSTRACT:
An electrical discharge machining apparatus having an electrode and a work table on which a workpiece is placed for machining the workpiece by causing an electric discharge between the electrode and the workpiece. A shielding cover for forming a substantially enclosed predetermined space around main structural members comprising the electrical discharging apparatus is provided. A gas is introduced into the space formed by the shielding cover so as to keep the temperature in the space at a constant level.

REFERENCES:
patent: 2427588 (1947-09-01), Burnett
patent: 3585342 (1971-06-01), Kosco
patent: 4647748 (1987-03-01), Glassman
patent: 4698477 (1987-10-01), Aramaki et al.
patent: 4712288 (1987-12-01), Lodetti et al.

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