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科学技术的发展,日益要求在各种零件材料上加工出精密微小孔。在新开发研究出的各种加工微孔的技术中,电火花打孔是目前研究探索的主要途径,并最具应用前景。本文在分析了微小孔电火花加工的必要条件后,简要介绍了自行设计研制的微型电火花打孔实验装置,和所采用的一种制造工具电极的新工艺——走丝反拷法。经过加工试验,在本装置上已能反拷出φ0.04mm的工具电极和加工出φ0.05mm深径比为8的微孔。根据试验结果,分析了放电参数、机床精度和进给控制系统的灵敏度对加工孔径、加工速度和加工质量的影响。并指出了需进一步改进和探索的问题。
The development of science and technology, increasingly require the processing of various parts of the material on the tiny holes. In the newly developed and developed a variety of micro-processing technology, EDM drilling is the main way to explore and explore, and the most promising. After analyzing the necessary conditions of micro-hole EDM, this paper briefly introduces the micro-EDM perforating experimental apparatus designed by ourselves and the new technology of wire electrode anti-copy method. After the processing test, in this device has been able to anti-copy φ0.04mm tool electrode and processing φ0.05mm deep ratio of 8 micro-holes. According to the test results, the influence of discharge parameters, machine tool precision and the sensitivity of feed control system on machining aperture, machining speed and machining quality are analyzed. And pointed out the problems that need to be further improved and explored.