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Electric discharge machining method

  • US 5,183,988 A
  • Filed: 04/24/1990
  • Issued: 02/02/1993
  • Est. Priority Date: 04/24/1989
  • Status: Expired due to Fees
First Claim
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1. An electric discharge machining method in which an electric discharge is generated in a gap between an electrode and a workpiece by applying a pulse voltage across the gap to thereby machine said workpiece, the gap being filled with a machining solution, comprising the steps of:

  • selecting a condition which tends to place the gap between said electrode and workpiece in an unstable state for machining said workpiece;

    setting a period of time for which the condition selected lasts; and

    reducing the discharge energy provided by the pulse voltage for the period of time thus set when the condition is detected.

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