| 摘要 |
PURPOSE:To eliminate a belt, serving to transmits a rotation force and to improve workability and maintainability, by a method wherein the drive source of a wire feed roller forms pressure fluid. CONSTITUTION:With a valve 20 opened, a processing solution 19 is injected from an end surface 22 to rotate an impeller 18, and a wire delivery roller 10 connected to the impeller 18 is rotated. When, with this state, the tip of a wire 1 is inserted through a hole 8 and a guide 4 to feed it, the tip of the wire 1 is fed between a bite formed by the rollers 10 and 11, and the wire 1 is delivered in a guide pipe 9. The tip of the wire 1 delivered through the guide pipe 9 is fed between a bite formed by winding rollers 6 and 7 to wind the wire 1. The valve 20 is closed, blow off of the processing solution 19 against the impeller 18 is stopped to complete interconnection of the wires 1. Thereafter, the running speed and the tension of the wire 1 are controlled by means of the winding rollers 6 and 7, wire electrode discharge machining is effected, and the delivery rollers 10 and 11 are forced to perform free-rotation by means of the wire 1 under running.
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