一种汽车自动变速机构的运动构造设计方法

行星齿轮系具有结构紧密、传动效率高、高减速比与差速传动等特性,被广泛应用于汽车自动变速机构的设计。本文的主要目的是应用图论的方法,以实现汽车自动变速机构的运动构造设计。首先,以图画表示自动变速机构的行星齿轮系,由此简化运动特性分析,归纳基本运动设计规范,并提出汽车自动变速机构的运动构造设计系统化程序;接着,以日产汽车自动变速运动需求为例,应用所提出的系统化程序实际进行汽车自动变速机构的运动构造设计;最后,归纳得出满足运动设计条件的行星齿轮系的运动构造。本文的结果提供了汽车自动变速机构的运动构造设计的简易且系统化的设计程序。

A Design Methodology for the Kinematic Structure of Planetary Gear Trains for Automatic Transmissions

Planetary gear trains have the advantages of compactness, light weight, high speed reduction and capability of differential drives, and thus are often used in transmission systems. The purpose of this paper is to propose a methodology for the design of the kinematic structures of planetary gear trains for automatic transmissions. Based on the graph theory, the paper presented a canonical graph representation of their kinematic structures. Then, an algorithm was developed for their structural synthesis. The design of an automatic transmission for a Nissan automobile was used as an example to illustrate the proposed methodology. The results of the paper provide a simple but systematic procedure for the design of the planetary gear trains for automatic transmissions.