Ultrasonic Assisted Electrolysis Processing Mechanism And Experimental Study

The progress of science and technology makes the modern industrial products to high accuracy, high speed, high temperature, high pressure, large power, small changes direction to develop, the miniaturization of the product requirements of increasingly urgent. Fine and special processing method is to realize the miniaturization, micromation technical foundation, it determines the mechanical product processing precision and surface quality, become the measure of a country’s overall level of manufacturing one of the important signs. Electrolytic processing can achieve fine processing theory of space.This article provides an overview of microfabrication technology research application status, analyzes the micro ECM combined ultrasonic and electrochemical micromachining technology and the research status at home and abroad. The ultrasonic vibration is introduced into the fine electrolytic machining formed in the ultrasonic assisted electrochemical micro machining, is a very promising research topics, then the paper puts forward the working content.Based on the electrolytic machining theory, describes how the adoption of technological measures for improving ECM machining accuracy and surface quality, analyze the ultrasonic assisted ECM of the ultrasonic vibration is introduced into the high frequency pulse electrochemical machining, small clearance processing, improve the processing environment, improving processing quality technical foundation and advantage; Analysis of ultrasound assisted electrochemical machining principle; by ultrasound assisted electrochemical machining gap characteristic mathematical model, analyzed the ultrasonic assisted ECM improvement of electrochemical machining precision and the surface quality of the root cause; separately from the machining accuracy, surface roughness, the processing efficiency three respects, analysed electric parameters (voltage, electrical conductivity, pulse characteristics) on the ultrasonic assisted ECM process indexes.Establishment and improvement of ultrasound assisted electrolytic machining ultrasonic generator system, ensure the whole system in the course of processing in the resonance state, so that the ultrasonic vibration has always maintained a resonance maximum amplitude; the adjustable magnetic tension of the feeding mechanism, can be maintained between the tool and workpiece, constant pressure; working table can be achieved X, Y direction, can adapt to different size and position of the processing device; and the displacement comparison method of ultrasonic vibration and pulse current composite sync.Design of ultrasonic assisted ECM machining mechanism and test methods; design and production of the required to test the tool cathode, processing test. Processing results of test showed:ultrasound assisted electrochemical machining process is stable, can effectively realize the controllable small clearance, low voltage static liquid processing, improve the machining precision and surface quality; using different pulse voltage with different processing effect, a reasonable choice. Voltage hours electrolytic action is faint, voltage is too large, easy to produce the spark discharge, to burn the workpiece, and the machining precision and surface quality are reduced; electrolyte quality scores (conductivity) becomes large, enhancing the processing efficiency, processing depth increase, but the processing precision and the surface quality is reduced; as the pulse frequency increases, the machining precision and the surface continuously improve the quality; pulse width will increase machining efficiency can be improved and the depth of processing, but the processing precision and the surface quality of the workpiece is reduced.