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本文简要综述了国内外活塞环理论研究及加工技术的发展状况，介绍了活塞环加工的一种新的方式和技术──活塞环非圆轮廓数控访形加工系统的构成和工作原理，详细论述了其伺服机构的设计，最后给出了实验结果。
This paper briefly reviewed the domestic and international research on piston ring theory and the development of processing technology, introduced a new method and technology of piston ring processing - the composition and working principle of the non-circular contour NC processing system of piston ring, discussed in detail The design of its servo, finally gives the experimental results.