Abstract
The method of this forming is progressed in the similar process as the milling machine using ball end mill. But in EDM, it is necessary to compensate the remarkable electrode wear length. In this research, some experiments are performed to form the shape using automatic electrode wear length measuring-compensating mechanism, and the relations between electrode wear process by machining condition and shape of the machined surface are considered. The results obtained above are as follows: (1) By the automatic compensation of the electrode wear length, the machining can be progressed with keeping the shape of worn electrode almost constant. (2) By giving the appropriate machining condition, the practical surface can be obtained. (3) By using a hollow electrode, the roughness of surface can remarkably be improved.
