随着科学技术的进步和人们生活水平的提高,汽车,火车、轮船等交通工具不但性能越来越好,而且产品的更新速度不断加快,产品类型也越来越多样化。内燃机作为交通工具的心脏部件,其性能也不断提高。活塞是内燃机的关键零件,其轮廓精度、型线的复杂性以及加工方法的生产效率和柔性也随之提高。因此、传统的加工工艺已不适应这一发展 With the advancement of science and technology and the improvement of people’s living standard, vehicles such as automobiles, trains and ships not only perform better and better, but also update products faster and more diversified types of products. The internal combustion engine as the heart of transport components, its performance is also rising. The piston is the key part of the internal combustion engine, its contour accuracy, the complexity of the profile and the processing method of production efficiency and flexibility also will be increased. Therefore, the traditional processing technology has not adapted to this development