Abstract

A new piezoelectric self-adaptive micro electrical discharge machining system, based on inverse piezoelectric effect, was developed in this paper to improve stability of micro-EDM process The Working mechanism and working process of this new technology were illustrated. In this new technology, the piezoelectric actuator was used as the micro driven system to control the discharge gap distance depending on the discharge state. This paper presents an investigation on the effects of machining parameters on machining efficiency in piezoelectric self-adaptive discharge machining. The effects of machining parameters such as open voltage, capacitance, resistance, spindle rotational speed and initial feed speed have been analyzed on machining efficiency by using signal to noise analysis method based on orthogonal experiment.

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