Study on the mechanism of ultrasonic vibration aided electrical discharge milling in deionized water

Ultrasonic vibration aided electrical discharge milling in deionized water is proposed and its mechanism is investigated in this paper. The tool electrode is formed to be walled pipe, and high pressure deionized water is supplied through it. Two groups of orthogonal experiments were carried out respectively, one group with ultrasonic vibration on tool electrode and the other without. Research results show that ultrasonic vibration can improve the machining process and surface roughness.