Wire-cut, electric discharge machining method

Details Wire-cut, electric discharge machining method Wire-cut, electric discharge machining method

1984-06-27

1985-10-01

Paschall, M. H.

Electric heating

Metal heating

Cutting or disintegrating

219 69M, B23P 108

Patent

active

045448191

ABSTRACT:
When cutting workpiece into a desired number of closed loop configurations by means of a wire-cut, electric discharge machine provided with an automatic wire feed mechanism, electric discharge machining is started from a machining start hole made in the workpiece corresponding to each closed loop configuration and is performed to a point where the electric discharge machining operation is stopped, thus a part of the closed loop configuration is left uncut. After fixing at least one portion of each closed loop configuration to the workpiece and inserting the wire electrode into the machining start hole by the automatic wire feed mechanism, the electric discharge machining operation is resumed to cut off the remaining uncut part. In the case of the wire electrode breaking during the electric discharge machining operation, the wire electrode is inserted by the automatic wire feed mechanism into the machining start hole and is moved to the position where it breaks along the route where the machining operation has already been performed, and then the electric discharge machining operation is resumed.

REFERENCES:
patent: 4338505 (1982-07-01), Katsube et al.
patent: 4350864 (1982-09-01), Janicke et al.

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