摘要变速器按操纵方式可分为手动变速器、自动变速器和半自动变速器。本文主要设计内容为手动变速器的输入轴,汽车变速器是汽车传动系的核心部分,而输入轴又是变速器的重要组成部分。变速器将发动机动力按照行驶工况传递至驱动车轮,以满足汽车的行驶要求,输入轴则是将发动机动力由离合器传递给输出轴的关键。本文设计一款捷达车型的变速器输入轴,在已知其发动机排量、最大功率、最大扭矩等相关参数的基础上进行变速器输入轴的设计,结合了CAD设计与CAE分析过程,通过二维与三维建模设计出一款手动变速器的输入轴,并通过刚度强度分析,保证了其性能的可靠性。59848
关键词 齿轮轴 传动比 变位系数 强度 刚度
毕业设计说明书(毕业论文)外文摘要
Title The design of a transmission input shaft
Abstract
The transmission of automobile can be pided into Manual Transmission, Automatic Transmission and Semi-Automatic Transmission. This thesis aims at designing the input shaft of an Manual Transmission. The transmission is the core part of the drive train, and so as the input shaft, it is an important component of the transmission. The power of the engine is transferred to the drive wheels by the transmission according to the driving condition , while the input shaft is the key component to transmit the power from clutch to output shaft. The design in this paper is based on some related parameters of Volkswagen jetta models. The paper Combines CAD design and CAE analysis process , and makes the 2 d and 3 d mode according the designing results. In addition, the stiffness and strength analysis about the shaft ensures its dependability.
Keywords Gear axle transmission ratio modification coefficient strength stiffness
1 绪 论 1
1.1 手动变速器概述 1
1.2 本文研究内容 1
2 变速器总体方案设计 2
2.1 两轴式变速器结构设计与分析 2
2.2 变速器动力传递分析与输入轴系设计分析 3
2.3 本章小结 5
3 变速器主要参数的确定 6
3.1 挡数的确定 6
3.2 初选传动比 6
3.3 变速器中心距及外形尺寸的确定 8
3.4 变速器齿轮参数的确定 8
3.5 本章小结 10
4 变速器输入轴齿轮的设计与强度校核 11
4.1 齿轮结构设计 11
4.2 齿轮的强度校核 16
4.3 本章小结 21
5 变速器输入轴的设计与校核 22
5.1 变速器输入轴的结构设计 22
5.2 输入轴的强度校核 24
5.3 基于CATIA的输入轴三维建模 31
5.4 本章小结 32
6 基于CATIA的变速器输入轴有限元分析 33
6.1 分析前处理