Wire-type electric discharge machining system capable magnetical

Details Wire-type electric discharge machining system capable magnetical Wire-type electric discharge machining system capable magnetical

1991-10-08

1993-02-02

Evans, Geoffrey S.

Electric heating

Metal heating

Cutting or disintegrating

269 8, B23H 702, B23H 1100

Patent

active

051839865

ABSTRACT:
A wire-type electric discharge machining apparatus capable of attracting material from a workpiece to an integral electromagnet. An aperture is located proximate the electromagnet. When material is attracted by the electromagnet, the aperture will be obstructed. Attraction is confirmed by measuring the pressure in a chamber in communication with the aperture, such that a low pressure indicates obstruction, and thus attraction of the material to the electromagnet. If based on this measurement it appears that the material has not been attracted to the electromagnet, a further attempt is made at a different location of attraction.

REFERENCES:
patent: 4484052 (1984-11-01), Inoue
patent: 4745253 (1988-05-01), Girardin
patent: 4996406 (1991-02-01), Nakayama
patent: 5015814 (1991-05-01), Morishita
Patent Abstracts of Japan, vol. 9, No. 261, Oct. 18, 1985, & JP-A-60 108 217.

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