抄録
Electrochemical discharge machining (ECDM) is one of nontraditional processes for micro-fabrication of non-conductive materials. In this research, the effect of ultrasonic vibration in ECDM gravity-feed drilling of soda lime glass is investigated. The ultrasonic vibration is applied on a workpiece and affects ECDM in two ways; to change discharge behavior by influencing gas bubbles and gas film formation, and to improve electrolyte circulation. However, the discharge behavior by changing the gas bubbles and the gas film gives more dominant influence on machining result rather than the electrolyte circulation. It is found that the ultrasonic reduces material removal rate, but improves surface integrity of the hole.
