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Research for Micro Energy Pulse Power Supply Used by Combination Electro-discharge Machining

Micro-EDM is based on the phenomenon of electrical corrosion duringspark discharge between the tool electrode and the workpiece to remove excess metal for processing. It is a micromechanical manufacturing technology that can process any conductive material. It has become an important method for the precision processing of conductive materials in mesoscopic scale. But the processing efficiency is low for current technology and it is difficult to meet the high-efficiency processing requirements of micro-processing with a large number or multiple repetitive features. In order to solve this problem, a kind of combined electrical machining micro-energy pulse power supply that meets the process methods including micro-EDM machining, micro-electrolytic machining, and wire electrode grinding has been developed. The method of serial and parallel micro-EDM has been achieved with a variety of process methods in multiple workstation. At the same time, in order to further improve the efficiency of electromachining, the following technologies were studied and explored, including increasing the discharge frequency, adaptive control of the discharge gap and system control based on CAN bus communication. This article focuses on the overall design idea of the micro-energy pulsed power supply and the key technology implementation methods. Finally, the experiment was Implemented for the fabrication of micro-group characteristic group holes and slow-wave structure in travelling-wave tube to verify the performance of the micro-energy pulsed power supply in terms of micro-group characteristic processing.