| 摘要 |
<p>A method and apparatus for use in EDM are described. Known EDM techniques require the voltage applied between the electrode (11) and the workpiece (10) to be removed either periodically or after a predetermined integrated current has passed and the resulting interruptions add to the time required for machining. In the present invention the voltage is applied until an arc is imminent or is detected and then the voltage is removed for a time sufficient to allow de-ionization of the gap between the electrode (11) and the workpiece (10) to occur. </p> |
