半转机构的内凸轮啮合传动  

A Transmission with Internal Cams and Roller Gears for Half-revolution Mechanisms

作　　者：张玉华[1] 邱支振[1] 

机构地区：[1]安徽工业大学机械工程学院,安徽马鞍山243002

出　　处：《机械传动》2008年第3期1-3,共3页Journal of Mechanical Transmission

基　　金：国家863计划(2006AA11Z226);安徽省自然科学基金(070414155)

摘　　要：提出了一种新型的内凸轮啮合传动,可满足半转机构的特殊运动要求。对新机构的构造和主要参数进行了综合,确定了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,内凸轮啮合传动的工作原理是可行的,设计方法是正确的。A half-revolution mechanism is the one that can imitate the animal organs to generate asymmetry motion.It can be designed as a new type of propeller or turbine by high-speed fluid.A new type of transmission mechanism with internal cams and roller gear followers for the half-revolution device is discovered to overcome the disadvantage of the general transmission such as belts,chains or planet gears.Its construction and working principle are investigated.The parameters of the internal cam with roller gear followers are synthesized according to the requirement of the half-revolution mechanism.It can be modeled as a particular application of the parallel indexing cam mechanisms,where the internal cam is fixed and the frame is rotated and the roller gear follower moves in planet motion.The composition of the cam profile is proposed and the formula of the mechanism parameters is 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.A visual prototype of the half-revolution mechanism is developed based on the determined parameters and derived equations by ADAMS.An example is given and demonstrates that it is available to design the new mechanism using the derived expressions.

关 键 词：凸轮机构 内共轭凸轮 半转机构 凸轮机构综合 

分 类 号：TH112[机械工程—机械设计及理论]