自动换刀装置中弧面分度凸轮啮合运动的力学分析

摘要

In automatic tool changer the globoidal indexing cam and the roller of rotating disc may transfer big load during meshing motion,which magnitude and direction are changing constantly.By taking the rollers in meshing motion as investigated subject a mathematical model of their force analysis is estab-lished.Then the knowledge of meshing principles and differential geometry is utilized to solve each parameter in mathematical model,and programming and solving for the actual example by VC++ software as a tool is done so that the transformation law graph between cam angle rotation and normal load for roller supported is educed,and data file of load magnitude is generated.Through analyzing the transformation law graph, the main influence factor of force roller supported is found,which provides theory foundation for roller type selection in design globoidal indexing cam.%自动换刀装置中弧面分度凸轮和转动盘的滚子在啮合运动中传递较大的载荷,其大小和方向在不断发生变化,以啮合运动时转动盘的滚子为研究对象建立其受力分析的数学模型.用啮合原理及微分几何知识对数学模型中各个参数进行求解,并用VC++软件为工具对实际算例进行编程求解.得出凸轮转角与滚子所受法向载荷的变化规律曲线图,并生成载荷大小的数据文件,通过对变化规律曲线图进行分析,找出影响滚子所受法向力大小的主要因素,为设计弧面分度凸轮时转动盘滚子的选型提供理论依据.