R175柴油机经全国联合设计,部级鉴定,已成为我国定型推广的一种小马力柴油机。它的结构紧凑、重量轻、功率储备大,具有多档功率和转速。为了早日实现农业机械化和赶超世界先进水平,必须认真制造每个零件,确保质量。然而有的零件加工是比较困难的。例如:活塞裙部是一个锥椭园, R175 diesel engine by the national joint design, ministerial identification, has become China’s stereotypes to promote a small horsepower diesel engine. Its compact structure, light weight, large power reserve, with multi-speed power and speed. In order to realize mechanization of agriculture and catch up with the world’s advanced level as soon as possible, every part must be carefully made to ensure quality. However, some parts are more difficult to process. For example: Piston skirt is a conical elliptical,