对称内啮合平行分度凸轮机构

A Parallel Indexing Cam Mechanism with Symmetric Internal Meshing Cams

提出了一种新型的平行分度凸轮机构———对称内啮合平行分度凸轮机构。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。基于凸轮的反转原理和理论廓线的几何性质导出了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,对称内啮合平行分度凸轮机构的设计方法是正确的。

A new type of parallel indexing cam mechanisms is designed. The composition of the cam profile is proposed and the formula of 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.