A method for wire-cut electric discharge machining.

摘要

The invention relates to cutting a work (W) into a closed loop configuration 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 (31) made in the work (W) and is performed to a point (C) of suspension of the electric discharge machining operation where a part (32) of the closed loop configuration is left uncut. After fixing at least one portion of the closed loop configuration (33) to the work (W) by adhesive (34) and reinserting the wire electrode into the machining start hole (31) by the automatic wire feed mechanism, the electric discharge machining operation is resumed to cut off the part (B-C) remaining uncut. In the case of the wire electrode being broken during the electric discharge machining operation, the wire electrode is reinserted by the automatic wire feed mechanism into the machining start hole (31) and is moved to the position of its breakage along the route where the machining operation has already been performed and then the electric discharge machining operation is resumed.