The effect of ultrasonic amplitude on the performance of ultrasonic vibration-assisted EDM micro-hole machining

A study on ultrasonic vibration-assisted electrical discharge machining (UVEDM) micro-hole, which mainly includes three key designs, was conducted to improve the performance of electric (EDM) micro-holes TC4 titanium alloy. First, a mathematical model for velocity flow field in interelectrode gap established. Consequently, effect presence or absence vibration analyzed. Furthermore, based COMSOL Multiphysics, two distributions and debris were simulated, influence amplitude them Finally, UVEDM micro-hole with different amplitudes conducted. The found increase increment optimal value 5.22 μm, while decreases when goes beyond value. Compared EDM MMR is increased by 2.4 times, electrode loss hole taper are reduced 56% 24%, respectively.