本文通过深入研究多自由度行星机构的内部规律,提出了一种多自由度行星变速箱(以下简称为XBX)方案优化的组合求解法。该方法在原理上不同于传统的构件分析法与线图综合法,并且实现了XBX参数优化、几何干涉判别程序一体化。程序运行表明,该方法所得方案全、运行机时短、所需内存少,从而使XBX方案优化的计算机辅助设计,推向具有实用价值的阶段。 In this paper, through deep research on the internal laws of multi-DOF planetary mechanism, a combinatorial optimization method for multi-DOF planetary gearbox (hereinafter referred to as XBX) scheme is proposed. The method is different from the traditional method of component analysis and line graph synthesis in principle, and the integration of XBX parameter optimization and geometric interference discrimination program is realized. The running of the program shows that the scheme obtained by the method has the advantages of complete solution, short running time and little memory required, so that the computer aided design of the XBX scheme optimization is pushed to a stage of practical value.