Abstract
This paper deals with the PCD ball nose end mills were manufactured by a CNC tool grinding machine with EDM function. The EDM function of this machine was determined to use for machining the large amount of rough portion of PCD in order to reduce final grinding operation using diamond-wheel and to make the cycle-time shorter. On the other hand, In order to minimize damage to the cutting edge of the EDM process on PCD, it is necessary to be able to simply produce a higher peaks of minute electrical current. That is why the power supply using the condenser circuit method is practical, as it is relatively inexpensive.
