1、 汽车汽车六档六档变速器毕业设计变速器毕业设计 专专 业业 机电一体化机电一体化 班班 级级 机电机电 1 1 班班 机电信息工程系机电信息工程系 - I - 摘摘 要要 作为汽车传动系统的重要组成部分，变速器对整车的动力性与经济性、操 纵的可靠性与轻便性、传动的平稳性与效率都有着较为直接的影响。虽然传统 机械式的手动变速器具有换档冲击大，体积大，操纵麻烦等诸多缺点，但仍以 其传动效率高、生产制造工艺成熟以及成本低等特点，广泛应用于现代汽车上。 本文在深入了解和学习变速器开发流程和相关设计理论知识的前提下，首 先确定该微型汽车手动变速器的设计方案，包括齿轮和轴的总布置形式、换档 操纵机构及档位
2、布置形式等；其次根据所配发动机的基本参数以及考虑到整车 动力性和经济性要求下的传动比，设计计算出变速器主要零件的相关参数，通 过对设计参数的分析，找到影响手动变速器性能的因素，完成齿轮、轴和轴承 等主要零件以及同步器同步过程的分析。同时针对各影响因素结合变速器的结 构和目标性能进行优化。在提高传动效率，换挡舒适性，整机NVH性能，轻量化 等方面进行研究。 关键词关键词：手动变速器 传动效率 NVH性能 轻量化 - II - Abstract As an important part of automobile transmission, gearbox not only has a direc
3、t i-mpact on the vehicles power and economy, also affects the operation reliability andease, transmission stability and efficiencyAlthough the traditional mechanical manual transmission has many disadvantages，such as large shift shock, huge volumeand complicated control，it is still widely used in mo
4、dem cars for its advantages ofhigh transmission efficiency, mature production technique and more importantly lowcost This thesis firmly confirms the design plan of manual gearbox of micro car, basing on the comprehension and study on gearbox development process as well asrelevant theoriesThe design
5、plan includes the layout of gear and shaft, layout of gearshifting operation mechanism，etcSecondly based on the essential parameter offurnished engine and the required transmission ratio of the vehicles powerperformance，the related parameters on main components of gearbox are worked outVia analysis
6、to design parameters，finds out the factors which take effects on theperformance of manual gearboxThis thesis completes gear, shaft and bearing main parts and synchronizer synchronous process analysis. Considering all the factors combined with the structure of the performance target and transmission is optimized .In improve the transmission efficiency, the shifting comfort ability, the overall performance of NVH, lightweight, etc, Key wo
