Method and apparatus for electroerosive by wire processing of a conductive werkstuecks

摘要

PURPOSE:To prevent a wire electrode from being disconnected by making the travelling speed in a corner machining part when supplying the wire electrode larger than that in a linear machining part. CONSTITUTION:A wire electrode 2 is supplied from a reel 4, passes through a guide 3 and is wound round a reel 5. Its travelling speed is determined by the speed of revolution of a motor 9 driven by a speed controlling circuit 10. When cutting out a workpiece 1 with wire cut electric machining, a wire electrode 2 is liable to be disconnected at a corner part where said electrode changes in its advancing direction from a linear part A to a linear part B. A turning detecting circuit 16 detects the corner part by a feed controlling signal from an NC device 14, and a command is sent to the speed controlling circuit at that time so as to make the traveling speed of the wire electrode 2 large. When reaching the linear part, the traveling speed is again returned to the home position.