基于温差法的连杆衬套装配工艺研究与实践

Research and Practice of Connecting Rod Bushing Assembiy Process based on Temperature Difference Method

针对发动机连杆衬套压装工艺故障,开展了衬套"温差法"压装工艺技术研究。在工艺试验验证基础上,优化了衬套冷冻温度、冷冻时间及连杆小头加热温度、加热时间等工艺参数,解决了衬套压装变形问题,使衬套固持力得到了精确控制,并形成了精密压装工艺规范,用于指导生产。

According to the fault of the engine connecting rod bushing, the research on the technology of ＇ temperature difference method＇ press fit technology is carried out. On the basis of process experiment verification, the parameters of the lining of freezing temperature, freezing time and connecting rod heating temperature and time are all optimized. Solve the problem of the deformation of the hushing pressing. Bush has been holded in the force control, and form the precision press- ing process specification for the production of guidance.