| 摘要 |
<p>An adaptive control apparatus for controlling machining current pulse in electric discharge machine comprises the first circuit for supplying said machining current pulse to the gap between the machining electrode and the workpiece, the second circuit for indirectly monitoring discharge current, area changing means for changing the detecting area according to several machining conditions, discriminating means for discriminating waveform of discharge current which is indirectly monitored by said second circuit and current controlling means for controlling the OFF time of said machining current pulse according to discriminating results. Therefore, according to the invention, machining rate is increased and surface state of the workpiece is improved due to less arc discharge. <IMAGE></p> |
