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This article outlines the fine and fine composite processing technology, micro ultrasonic machining, micro machining, micro-EDM technology advantages and limitations of each technique, ultrasonic composite micro EDM (electrolysis, EDM) technology combines ultrasound and electrolysis, EDM processing technology, can effectively overcome the drawbacks of a single processing technology. This article was subjected to ultrasonic composite micro-electrolysis, EDM application of basic research in an attempt to conductive hard and tough difficult materials research an effective method. Electrolytic composite ultrasound microfabrication the ultrasonic frequency vibration, the role of micro-organic composite electrolyte, the electrolyte due to use of passive resistance, electrolysis at the surface passivation film, fine abrasive polishing ultrasound, \passivation film can be removed, so that the surface is always in the passive - active - passive constantly alternating state during the electrochemical reaction to ensure continuous, while improving the machining gap state to improve the machining accuracy. The ultrasonic composite micro EDM process, the working fluid is mixed with the insulating fine abrasive dispersion of the discharge point, the tool electrode composite ultrasonic vibration, can greatly reduce the occurrence of short-circuit; while ultrasonic vibration generated by cavitation , the pumping action and the vortex action to improve the efficiency of electric discharge machining pulse. Explore the complex micro-power ultrasonic machining mechanism, based on the electrolysis was constructed to achieve ultrasound, ultrasound spark composite processing devices. Used in the field of micro manufacturing tooling tiny size, the production of high precision is difficult. So tiny tool head design is fine ultrasonic combined processing power of key technologies. This paper designed micro-axis, fine ribs, fine groove tool electrode, using micro-EDM wire cutting, EDM \According ultrasound characteristics of the composite micro EDM, develop pilot programs for single micro ultrasonic machining, micro ultrasonic combined processing power comparison test, further validate the feasibility of micro ultrasonic composite processing, reliability and technical superiority; studied electrical parameters and non- electrical parameters of the composite processing efficiency, surface quality and tool electrode wear were studied; Experimental results show that the electrolytic composite micro ultrasonic machining efficiency than single ultrasonic machining and tool electrode loss, good surface quality. In the micro-EDM composite ultrasonic machining, ultrasonic vibration can effectively improve the discharge process, efficiency, accuracy and stability than ultrasonic machining high; testing to determine the parameters of the composite EDM process effect on the curve. Furthermore, for the processing of the test process occurs is Pen? Major problems were analyzed and summarized. Finally, future research work presents visions and perspectives.
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