Abstract:The re-casting layer on the surface of micro-EDM machining affects the machining accuracy and performance. For this purpose, an integrated device with micro-EDM machining and electrolytic removal of surface recasting layer was designed. The device was composed of key parts such as motion platform, servo control and pulse power supply. It integrated micro-EDM and micro-electrolysis processing functions. Different control strategies were adopted for different processing methods to solve the integration problem of micro-EDM and electrolytic processing on the same equipment.At the same time, the micro-EDM pulse power supply and the electrolytic processing pulse power supply were integrated to improve the processing efficiency. It is verified by experiments that the device can well realize the on-line removal of the surface recast layer of the micro EDM, and the thickness can be controlled by changing the processing parameters.