摘要
汽车的万向传动轴是由传动轴、万向节两个主要部件联接而成，在长轴距的车辆中还要加装中间支承。万向传动轴主要用于工作过程中相对位置不断改变的两根轴间传递转矩和旋转运动。在本世纪初万向节与传动轴的发明与使用，在汽车工业的发展中起到了极其重要的作用。随着汽车工业的发展，现代汽车对万向节与传动轴的效率、强度、耐久性和噪声等性能方面的设计及计算校核要求也越来越严格。本毕业设计将依据现有生产企业在生产车型(CA1041)的万向传动装置作为设计原型。在给定整车主要技术参数以及发动机、变速器等主要总成安装位置确定的条件下，对整车结构进行了分析，确定了传动轴布置方案，采用两轴三万向节带中间支承的布置形式。在确定了传动方案后，对传动轴、万向节总成、中间支承总成进行设计，使该总成能够在正常使用的情况及规定的使用寿命内不发生失效。
关键字：传动轴；万向节；中间支承；设计；校核
ABSTRACT
The universal drive shaft of automotive is composed of transmission shaft and cardin joint. The main function of the universal drive shaft is to transmitting torque and rotation movement between two shafts whose relative position is variation in the working process. At the beginning of this century the transmission shaft and cardin joint play an important role in the development of automobile industry. As the development of automobile industry, the automobile demand that the design and verification of transmission shaft and cardin join stricter in the efficiency, intension, durability and noise performance. This graduation design chooses existing production business enterprise of basis is producing the car type(CA1041) of ten thousand to spread to move to equip the conduct and actions design prototype. Under the conditions of the main technical parameters of the given vehicle, installation location of engine, transmission and other major assembly are determined , the structure of the vehicle is analysised, the transmission shaft layout program is determined. Two shaft-three cardin joints is adapted.After determining the transmission options, the right drive shaft and universal joint assembly, intermediate bearing assembly is designed, so that the assembly can be used in normal situations and the life within no failure.
Keywords：Transmission shaft；Cardin joint；Middle supporting；Design ；Verification
目录
摘要.........................................................................................................................................I Abstract .............................................................................................................................. II 第1章绪论 . (1)
1.1选题的目的和意义 (1)
1.2国内外研究现状、发展趋势 (1)
1.3研究内容及方法 (2)
1.3.1传动轴方案的选择及主要参数的确定 (2)
1.3.2 万向节类型的选择 (2)
1.3.3十字轴式万向节的结构分析 (2)
1.3.4万向节总成主要参数的确定与校核 (3)
1.3.5中间支承的设计与校核 (3)
第2章传动轴总成的设计 (5)
2.1万向传动轴总体概述 (5)
2.2传动布置型式的选择 (5)
2.3传动轴断面尺寸的确定与强度校核 (6)
2.3.1传动轴的运动分析 (6)
2.3.2 传动轴断面尺寸的计算与校核 (9)
2.4主传动轴滑动花键的设计 (12)
2.5 中间传动轴花键的设计 (15)
2.6 本章小结 (17)
第3章万向节总成的设计 (18)
3.1 万向节类型的选择 (18)
3.2 十字轴式万向节的结构分析 (19)
3.3万向节的受力分析 (20)
3.3.1 单十字轴万向节的受力分析 (20)
3.3.2双十字轴万向节传动 (22)
