细密机械加工折柳盘甩油盘叶轮锁母，，，CNC加工的历史已经履历了长达半个多世纪，，，NC数控系统也由最早的模拟信号电路控制生长为极其重大的集成加工系统，，，编程方法也有手工生长成为智能化、强盛的CAD/CAM集成系统。。。。。

Precision machining of folding discs, oil slingers, impellers, and locking nuts has a history of over half a century in CNC machining. NC numerical control systems have evolved from the earliest analog signal circuit control to extremely complex integrated machining systems, and programming methods have also evolved from manual to intelligent and powerful CAD/CAM integrated systems