| 摘要 |
PURPOSE:To prevent a machine from being influenced by a noise due to a characteristic and an electric discharge or the like in a transmission system, by constituting the machine such that a machining condition detecting circuit, being arranged in the vicinity of a machining gap, transmits the detection result of a machining condition by a digital signal to a pulse control circuit. CONSTITUTION:A machining condition detecting circuit 80 detects a machining condition by the detection of voltage in a machining gap, and the detection result is converted into a digital signal of voltage and output. Next, the digital signal, being converted into an optical signal in a voltage/light converter driver 11, is fed to an optical fiber cable 12. And a device, in which the optical signal is converted into a digital signal of voltage by a light/voltage converter receiver 13, controls a switching element 5 to be turned on and off by a pulse control circuit 70. This device, in which the machining condition detecting circuit 80 is not built in a machining power supply unit 30 but arranged in the vicinity of the machining gap, improves machining performance by preventing a noise from influencing the device.
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