Automatic electrode wire rethreading device for travelling wire

Details Automatic electrode wire rethreading device for travelling wire Automatic electrode wire rethreading device for travelling wire

1980-11-21

1983-01-04

Shaw, C. C.

Electric heating

Metal heating

Cutting or disintegrating

B23P 112

Patent

active

043673929

ABSTRACT:
In a travelling wire EDM apparatus, the electrode tool in the form of a wire used for cutting an electrode workpiece is passed through a first zone in which the wire is straightened, preferably by exerting a pull on the wire while the wire is heated. The wire is subsequently cut-off at the bottom of the first zone, and the straightened portion of the wire is then threaded by a carriage through a hole pre-drilled in the workpiece, or through a cut in the workpiece in the event that the wire ruptures during machining, until the end of the wire is engaged in the wire conveyor mechanism.

REFERENCES:
patent: 3822374 (1974-07-01), Ullmann et al.
patent: 3987270 (1976-10-01), Ullmann et al.
patent: 4242559 (1980-12-01), Roemer et al.

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