Device for detecting successful threading on electrical discharg

Details Device for detecting successful threading on electrical discharg Device for detecting successful threading on electrical discharg

1995-02-16

1996-06-04

Evans, Geoffrey S.

Electric heating

Metal heating

Cutting or disintegrating

B23H 710

Patent

active

055235450

ABSTRACT:
A device for detecting successful threading on electrical discharge machines which have, in their lower head, wire traction members and contact points, the detecting device being positioned downstream from and in the neighborhood of the traction members and consisting of an isolation transformer, a direct-current-to-alternating-current converter which feeds voltage to the transformer output and an amplifier comparator for the output signal of the isolation transformer.

REFERENCES:
patent: 4383161 (1983-05-01), Corcelle
patent: 4598189 (1986-07-01), Inoue et al.
patent: 4689462 (1987-08-01), Goto
patent: 4814572 (1989-03-01), Aso et al.
patent: 5051553 (1991-09-01), Kinoshita

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