Abstract: In this paper, mathematical models are established for the scheme synthesis of two-degree-of-freedom planetary gearbox, using the bar-linkage interchange method [1,2], and graph theory[3], and the program flowcharts are provided so that the kinematic synthesis, the dynamic synthesis and the judgement on the construction practicability of the schemes can become simple, clear and complete programming.

Key words: 杆系, 图算法, 行星齿轮减速器