METHOD FOR ELECTRICAL DISCHARGE MACHINING OF A WORK IN THE FORM OF A ROLL

摘要

The method includes application of an electrical voltage across said work (3) and electrodes (11) mounted opposite the work with a predetermined gap therebetween. Each electrode (11) is formed by plural electrode segments (16) separated from one another by an insulator (18), and the electrical discharge operation is performed with said electrode segments in each electrode short-circuited to one another in the rough machining step, by contactors (22), and with said electrode segments insulated from one another in the finish machining step, thereby to reduce the overall working time.