本文分析研究了混合公比和转速重迭的三公用齿轮机构的各种传动方案,并提出一套优化方法与设计程序,以最小结构尺寸为目标函数,同时满足传动比的限制和啮合条件的要求。如果对优化设计的计算结果认为不够理想,还可以改变基准齿轮齿数,或者再附加约束条件,重新进行优化。设计程序中备有各种传动方案以供选择,并可根据计算结果绘制相应的优化转速图和传动图。 In this paper, various transmission schemes of three common gear mechanisms with mixed ratio and speed overlap are analyzed and analyzed, and a set of optimization methods and design procedures are proposed. With the minimum structure size as the objective function, the transmission ratio and the meshing conditions Claim. If the calculation of the optimal design is considered less than ideal, you can change the number of reference gear teeth, or re-optimize the constraint by adding additional constraints. Design programs with a variety of transmission options to choose from, and according to the calculation of the results of drawing the appropriate speed map and drive map.