Method and a device for optimization of die-sinking electrical discharge machining

A method for optimization of electrical discharge machining process for eroding a workpiece by an electrode (1) mounted in an electrical discharge machine tool, wherein a plurality of electrodes are required to form a plurality of cavities on the workpiece comprising:

• a. defining a target related to a machining priority, in particular the machining priority is selected from a group including at least one of the machining quality and machining time,
• b. obtaining cavity specification data defining the geometry of the cavity and the number of the cavities for calculating the material volume to be removed from the workpiece to form the cavities by a processing unit;
• c. obtaining at least one machining setting including machining parameters applied for machining the cavities by the processing unit;
• d. defining at least one machining sequence describing the order of machining the plurality of cavities;
• e. calculating cumulative wear of the electrode caused by machining the cavities based on the obtained cavity specification data, the obtained machining setting and the defined machining sequence by the processing unit;
• and
• f. determining the number of the electrodes required for machining the plurality of cavities based on the calculated cumulative wear of the electrode to reach the target by the processing unit.