Single generating and single indexing are indispensable for a hobbing machine to manufacture CATT gears,and the design of single dividing mechanism is the crux of the matter.

• 单齿范成和单齿分度运动是滚齿机加工CATT齿轮所必需的，而单齿分度机构的设计则是实现以上运动的关键。