该系统改变了传统机械靠模仿形加工方法，能满足不同鼓度曲线变化的需要。
It can re - place traditional mechanical profile modelling manufacture method, and can fit different profile of crown gears.
选择设计数控凸轮磨的结构和运动方程，利用西门子840c数控系统，对机械靠模数控凸轮轴磨床进行数控化改造。
CNC reformation to mechanical profile following CAM grinding machine is carried on by selecting the mechanic al structure of designing CAM grinding and applying Siemens 840c CNC system.
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