Prehesive device for the electrode wire of an EDM cutting machin

Details Prehesive device for the electrode wire of an EDM cutting machin Prehesive device for the electrode wire of an EDM cutting machin

1988-10-03

1990-12-25

Pellinen, A. D.

Electric heating

Metal heating

Cutting or disintegrating

140139, B23H 710, B23H 100

Patent

active

049805312

ABSTRACT:
An EDM machine with a travelling wire electrode having a device for straightening and rethreading the wire electrode. The device has a pivotally rotating arm that has a clamp to grasp the free end of the wire after accidental breakage. The clamp applies a tightening stress (optionally the wire is being heated), the wire portion to be discarded is wound on a capstan (configured with circumferential grooves) associated with the clamp on the arm, a wire cutter severs the wire above the capstan, and finally the wire is rethreaded.

REFERENCES:
patent: 3987270 (1976-10-01), Ullmann et al.
patent: 4242559 (1980-12-01), Roemer et al.
patent: 4547647 (1985-10-01), Schneider
patent: 4618716 (1986-10-01), Inoue et al.
patent: 4652716 (1987-03-01), Schneider et al.
patent: 4778972 (1988-10-01), Josserand
patent: 4816636 (1989-03-01), Obara et al.

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