内置式平行分度凸轮机构

A Parallel Indexing Cam Mechanism with Internal Placed Roller Gears

提出了一种新型的平行分度凸轮机构—内置式平行分度凸轮机构,其特点是销齿圈位于内凸轮基圆内。对新机构的构造和主要参数进行了综合,确定了分度凸轮工作廓面的组成,给出了机构参数设计的计算公式及机构配置的可行方案。基于凸轮的反转原理和理论廓线的几何性质导出了内凸轮的工作廓线方程和压力角计算公式。设计实例的仿真结果表明,内置式平行分度凸轮机构的工作原理是可行的,设计方法是正确的。

A new type of parallel indexing cam mechanism is presented.The composition of the cam profile is proposed and the formula for determining the mechanism parameters are established by synthesis of its configuration and size.The equations for working profile and pressure angle of the cam are derived based on the inverse model and the derivative of pitch curve of cams.An example is given and demonstrates that it is available to design the new mechanism using the derived expressions.