Wire electric discharge machining apparatus

Details Wire electric discharge machining apparatus Wire electric discharge machining apparatus

1990-01-25

1991-02-12

Evans, Geoffrey S.

Electric heating

Metal heating

Cutting or disintegrating

219 6914, B23H 702

Patent

active

049926403

ABSTRACT:
A wire electric discharge machining apparatus comprises a tank having an opening at its one side surface, which is movable in a two-dimensional plane, a shielding body having a through hole, which is in slide-contact with the side surface having the opening of the tank so as to close the opening, an arm which has first and second ends, at least one of which is fixed to a machine body and the other is extended into the tank through the through hole and the opening, and which supports in the tank a wire guide for guiding a wire electrode to a workpiece placed in the tank, an enclosure member capable of expansion and contraction in response to a relative movement of the tank to the arm, the enclosure member having both ends sealingly connected to the circumferential portion of the through hole of the shielding body and the machine body respectively, and a working liquid supplying device for supplying a working liquid to the tank through a space formed between the arm and the enclosure member.

REFERENCES:
patent: 4565915 (1986-01-01), Girardin
patent: 4647747 (1987-03-01), Goto
patent: 4663509 (1987-05-01), Kawashima
patent: 4918279 (1990-04-01), Babel et al.

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