【作者】 牟萑；

【导师】 陈兵奎；

【作者基本信息】 重庆大学 ， 机械设计及理论， 2004， 硕士

【摘要】 课题来源于国家“863”计划项目“新型空间凸轮活齿精密传动及其应用研究”(课题编号:2001AA423190)。新型空间凸轮活齿传动具有传动精度高、啮合间隙可调、自锁性能好等优点,在机器人、机床、仪器仪表等工业领域有着广泛的应用前景。空间凸轮活齿精密传动属于空间多齿啮合传动,其设计计算较为复杂。论文着重对空间凸轮活齿传动的相关基础理论包括齿形理论、力学特性及传动效率等进行了研究,编写了相应的数值计算程序;开发了关于该新型传动的计算机辅助设计/分析软件。本文的研究工作是该“863”计划项目的重要组成部分,主要内容包括:(1)根据单参数曲面族包络的理论和定传动比条件,建立了正弦型端齿共轭啮合零件理论齿廓方程,讨论了刀具半径对啮合齿形的影响,给出了啮合零件的修正齿形及刀具中心轨迹的求解方法。推导了空间凸轮和端齿的主曲率和主曲率半径的计算公式,给出了计算实例。(2)建立了正弦型端齿空间凸轮活齿传动的力学分析模型;根据弹性力学赫兹接触理论,推导了空间凸轮活齿传动点接触受力分析公式,并给出了求解的方法;开发了数值计算软件,对不同设计参数的受力特性进行计算,获得了该传动受力变形的一般规律,并与摆线型端齿的力学特性作了对比分析。(3)将空间凸轮活齿精密传动中活齿与凸轮啮合面之间的滑动摩擦力和滚动摩擦力用滑滚摩擦力来代替,推导出传动效率计算公式,并讨论了各因素对传动效率的影响。(4)在微软的MFC类库框架结构下使用面向对象的高级编程语言C++进行基于Windows的软件开发,编制了可视化系统软件,实现了对该传动机构的齿廓自动求解、机构啮合模拟以及力学数值仿真,从而为空间凸轮活齿精密传动的设计分析与数控加工提供了一种快捷、有效的工具。更多还原

【Abstract】 The project originates from the National “863” Plan, named ”The Research and Application on New Spatial Cycloid-Ball Gearing” (No. 2001AA423190). The spatial cam sliding tooth transmission has the advantages of high transmission precision, adjustable meshing clearance and good self-lock characteristic, so it deserves widely application prospects in many industry fields such as robot industry, machine industry, instrument industry, etc. Because the spatial cam sliding tooth precision transmission belongs to the spatial multi-tooth meshing transmission, the design and calculation are more complicated. This thesis emphasizes on the correlative basic theories of the spatial cam sliding tooth transmission including profile theories, the mechanics characteristic and transmission efficiency ect., and the numerical calculating programs are accomplished. The computer aided design and analysis software of the new precision transmission device is developed. The research work of this thesis is one of the important parts of this “863” plan project. Major contents of the thesis are as follows:1) According to single parameters curve enveloping theories and the constant transmission ratio condition, the theoretical profile equations of sinusoid face tooth conjugate meshing parts are established, the cutter radius’s effects on the profile are discussed, solutions to real profile and cutter center locus are studied in detail. The calculating methods on the modified profile and the cutter’s center trail are presented. The calculating formulas on the main curvature and curvature radius of cam and face tooth are deduced, and the calculating examples are presented.2) The mechanic analysis model of the sinusoid face tooth spatial cam sliding tooth transmission is built up. According to the Hertz contact theory in elastic-mechanics, the force analysis formulas of contact points are deduced and the resolution method is presented. The numerical calculating software is developed, and the force characteristics with different design parameters are calculated. The general law on force deformation of this transmission is obtained, and the calculated results of sinusoid face tooth are compared with cycloid face tooth and discussed.3) The slide-rolling friction force between sliding tooth and cam’s meshing profile of the spatial cam sliding tooth transmission is substituted for the sliding friction force and the rolling friction force. The formula for transmission efficiency is deduced, the correlative factors’ effects on the transmission efficiency are discussed. <WP=7>4) With the Microsoft MFC work frame, using the object oriented high-grade programming language C++ , the Windows-based visual system software is developed to realize profile automatic calculation, mesh simulation and mechanics numerical simulation of the spatial cam sliding tooth transmission, which is a prompt and effective tool for analysis, design and numerical control machining of the spatial cam sliding tooth precision transmission.更多还原