三轴式五档手动变速器设计
摘要
本设计的任务是设计一台用于通用五菱之光微型车的三轴式五档手动变速器，该变速器有两个突出的优点：一是其直接档的传动效率高，磨损及噪声也最小；二是在齿轮中心距较小的情况下仍然可以获得较大的一档传动比。
随着科学技术的日益发展，汽车的各项性能也日臻完善。现代汽车已成为世界各国国民经济和社会生活中不可缺少的交通工具。现代汽车除了装有性能优良的发动机外还应该有性能优异的传动系与之匹配才能将汽车的性能淋漓尽致的发挥出来，因此汽车变速器的设计显得尤为重要。分析了为保证变速器具有良好的工作性能，对变速器应提出的设计要求。详细介绍了变速器机构方案的确定，变速器主要参数的选择，变速器的设计计算，同步器设计计算等在变速器设计过程中的关键步骤。
变速器用来改变发动机传到驱动轮上的转矩和转速，目的是在原地起步，爬坡，转弯，加速等各种行驶工况下，是汽车获得不同的牵引力和速度，用时使发动机在最有利工况范围内工作。变速器设有空档和倒档。需要变速器还有动力输出功能。
关键词：变速器；同步器；档数；轴；
Three axis manual shift transmission design in five
Abstrack
This design task is to design a used for general WuLing sunshine in fiveof the three axis subcompact manual shift transmission ，the transmission hastwo outstanding advantages ： one is its direct transmission of high transmissionefficiency ； wear and noise minimal ；Second：in the gear center distance issmaller still can acquire larger gear transmission .
Along with the development of science and technology , the car of variousperformance also is being perfected . Hyundai has become the world nationaleconomic and social life of indispensable transport . Modern car with goodperformance engine except outside still should have excellent performancedrivetrain matching car performance will play out, so the incisively and vividlyauto transmission design is particularly important. Analyzed in order to ensure transmission has good work performance ： the transmission should propose design requirements. Introduces the transmission mechanism project determination,and transmission main parameters are selected, the transmission design calculation , the synchronizer design calculation in design process such as a critical step in transmission.
Transmission used to change to the drive wheels on the engine torque ancd rotational speed, the purpose is back starting, climbing, turn, accelerate, etc. Various kinds of driving conditions, the automobile get different traction and the engine speed and use it in the most favorable work within the working conditions. Transmission has gap and reversing. Need transmission and power output functions.
Keywords: transmission; Synchronizer; File numbered; Axis;
目录
中文摘要 英文摘要 主要符号表 1绪论 1.1概述
1.2五档手动变速器的研究意义 1.3国内外相关研究现状 1.3.1手动变速器（MT） 1.3.2自动/手动变速器（AMT） 1.3.3自动变速器（AT） 1.3.4无级变速器（CVT） 1.3.5双离合器变速器（DCT） 1.4本文主要研究工作
2机械式变速器的概述及其方案的确定
2.1变速器的功用和要求 2.2变速器结构方案的确定
2.2.1变速器传动机构的结构分析与型式选择 2.2.2倒档传动方案
2.3变速器主要零件结构的方案分析 2.3.1齿轮型式 2.3.2换档结构型式
3变速器主要参数的选择与主要零件的设计
3.1 变速器主要参数的选择 3.1.1档数和传动比 3.1.2中心距 3.1.3轴向尺寸