1概述活塞是内燃机重要零件之一,要求数量多、质量好、能适于高温工作。特别是内燃机产品也在逐年换新,其活塞的材料、加工精度与结构好坏都会影响发动机的工作性能,一些年来,国内外市场推出的变橢圆活塞,就是由于其结构的优越性,越来越为更多的厂家所采用。但也正由于此类活塞结构的特点,其加工和测量仍是目前还需解决的问题。针对此情况,我们结合某厂要求,研制了一种变椭圆测量机,通过调试取得了较满意的结果。与圆度 1 Overview Piston is one of the important parts of the internal combustion engine, requiring a large quantity, good quality, suitable for high temperature work. In particular, internal combustion engine products are also changing year by year, and its piston material, machining accuracy and structure will affect the performance of the engine performance, over the years, the domestic and international market variable oval piston is due to its superiority of structure, the more More and more manufacturers to adopt. However, due to the characteristics of such piston structure, the processing and measurement are still the problems to be solved at present. In view of this situation, we combined with the requirements of a factory, developed a variable ellipse measuring machine, obtained by debugging more satisfactory results. With roundness