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分析了电火花细微孔加工的一些工艺特点，并针对电火花细微孔加工工艺方法进行了研究。研制了以大功率场效应管作为功率开关器件的独立式适应控制微能脉冲电源，其最小脉宽可调至０．２μｓ。在进给控制系统上增加了自适应控制环．实现开路快速进给．短路和拉弧快速回退电极及切断电源的功能。利用不同的电规准及工艺参数进行了微孔加工实验，获得了一些有关工艺规律的初步结果。实验中加工出了最小孔径φ０．０１９ｍｍ，深径比为３１的试件，此工艺水平在国内是首次的。
Some process characteristics of EDM micro-hole machining are analyzed, and the research on EDM micro-hole machining process is carried out. Developed a high-power FET as a power switching device independent adaptive control micro-energy pulse power, the minimum pulse width can be adjusted to 0.2μs. In the feed control system to increase the adaptive control loop. Open fast feed. Short circuit and arc pull back quickly electrode and cut off the power of the function. Using different electrical specifications and process parameters were micro-hole processing experiments, obtained some preliminary results on the law of the process. Experiments in the processing of the smallest aperture φ0.019mm, depth-diameter ratio of 31 specimens, the level of this technology is the first time in China.