关键词: 周转轮系, 方案创成, 图形载体, 符号方案

Abstract:

Based on the topological structures of multi-speeds transmission systems for automotive vehicles,the graph carriers for generating schemes of the epicyclic gear mechanisms(EGMs) up to three degree-of-freedoms from six to nine links were summarized.According to the required design principles marking the rotation pairs,the gear pairs,the inside gearing pairs and outside gearing pairs on the graph carriers,and eliminating the isomorphic schemes and the schemes which disobey the characteristics of EGMs,an approach of the computerized creative design of EGMs was presented.Then,the generated schemes of EGMs were represented with symbol schemes for drawing the structure sketches
automatically.

Key words: epicyclic gear mechanisms(EGMs), scheme generation, graph carrier, symbol scheme