一、存在的问题 CA6102型发动机的活塞,是桶形变椭圆式,其头部设有凹型燃烧室。根据具体情况,我厂原选用C618K—2型普通车床加工此种燃烧室。但经过长时间的工艺调试,始终达不到技术要求,存在的问题主要有三个。 1.精度差因该机床使用的内涨夹具夹紧时无法保证工件和机床主轴的同轴度,加工出的零件端面摆差大,有的达到0.3mm,产品精度 First, the existing problems CA6102 engine piston is barrel-shaped variable elliptical, the head with a concave combustion chamber. According to the specific circumstances, I used the original plant C618K-2 ordinary lathe machining such combustion chamber. However, after a long process of commissioning, the technical requirements have not been met all the time. There are mainly three problems. 1. Poor accuracy due to the use of the machine up clamp clamp can not guarantee the coaxiality of the workpiece and the machine spindle, machined parts of the large swing, and some reached 0.3mm, product accuracy