| 摘要 |
PURPOSE:To improve work efficiency, by controlling an on-off function of automatic machining by a software in a control unit and performing on-off operation of the machining as automatic discrimination so that the electric discharge machining can be fully automatized. CONSTITUTION:When a machining condition is changed by an instruction, a control unit 22, decoding the instruction, outputs an off-signal of machining voltage to a machining power supply 40 further suspends a moving command of motor shafts 14, 18 to stop them till the machining condition is switched, and after the condition is completely switched, the unit 22 outputs an on-signal of machining to the power supply 40 restarting the machining. Here a control program, reading an NC instruction, decides a machining condition by each condition in a machining control program, processing only those necessary for off-action of machining by an off-machining condition set and an on-machining process routine. That is, the control unit, once cutting off the machining by an off-machining process and waiting for complete power off by an off-machining timer, switches the power supply to an NC instruction notch by a machining condition set, and after complete switching of the notch is confirmed by a machining condition set timer, the power supply is turned on by an on-machining process, and the next instruction is performed by setting a machining speed.
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