Method For Electrical Discharge Machining

A wire electrical discharge machining method (WEDM) for forming a desired pattern on a workpiece by a WEDM machine tool, in which a preliminary voltage pulse is applied to a gap between a wire electrode and a workpiece, and in which, at the breakdown of said preliminary voltage pulse, a first machining discharge pulse is applied to the wire electrode, comprising wherein

• a discharge position of said first machining discharge pulse along the engagement line of the wire electrode and the workpiece is determined in real time based on the voltage signals and/or current signals generated by said first machining discharge pulse,
• and that at least one additional machining discharge pulse is selectively applied directly after the first machining discharge pulse,
• in which said selective application of the additional machining discharge pulse is based on the determined discharge position and based on a digital pattern representing the desired pattern.