关键词: 小微结构, 精密电解加工, 振动进给, 流场

Abstract: In order to study the effects of vibration feed on the flow fields of electrochemical machining， taking the microstructure on the surfaces of the sheets as the research object， the multi-field coupled simulation models of electrochemical machining were established to simulate the electrochemical machining processes of microstructures under the conditions of continuous feed and vibration feed， and the processing tests were carried out to study the influences of vibration feed on the flow fields. The results show that vibration feed coupled with intermittent discharge may ensure that the electrolyte is updated to an initial state with uniform conductivity distribution before the power is turned on. As the increase of the machining depths， the disturbances of the vibration motions to the flow field are weakened， and the bubble distribution along the process tends to be uniform. For the surface microstructure with a processing depth of 0～0.5 mm， the vibration feed motion with an amplitude of 0.3 mm and a frequency of 40 Hz has a better effect on improving the flow field conditions， which is conducive to improve the stability， surface quality and dimensional consistency of the electrochemical machining processes of the small microstructure on the surfaces of the sheets. 

Key words:  , microstructure, precision electrochemical machining, vibratory feed, flow field