WIRE ELECTRIC DISCHARGE MACHINING DEVICE

摘要

PURPOSE: To optionally set a control gain of a relative speed control means of a wire electrode and a work piece to stabilize a machining state, and to improve machining speed. CONSTITUTION: In a relative speed control means 8 of the wire electrode and the work piece, a relative moving speed conforming to a preset proportional constant A is outputted in response to increase of measured voltage when the measured voltage exceeds a proportional constant change-over voltage set higher than a short circuit reference voltage, a command speed to be used as a desired value is outputted when the measured voltage is equal to a command voltage, and a positive relative moving speed is outputted in accordance with a preset proportional constant B (