黑豹HB1027变速器设计毕业论文.doc

黑豹HB1027变速器设计论文
摘要
变速器是汽车传动系中最主要的部件之一。其设计任务是设计一台用于微型商用车上的手动变速器。采用中间轴式变速器设计方案,其有两个突出优点:一是其直接挡传动效率高,磨损及噪声小;二是在齿轮中心距较小的情况下任然可以获得较大的一档传动比。
设计中根据汽车的外形、轮距、轴距、车辆重量、满载重量以及最高车速等参数结合该汽车的发动机型号可以得出发动机的最大功率、最大扭矩、排量等重要参数,再结合某些轿车的基本参数选择适当的主减速比。根据上述参数,再结合汽车设计、汽车理论、机械设计等相关知识,计算出相关的变速器参数并论证设计的合理性。
设计中给出了机械式变速器设计方案,经过严谨设计过程完成了一款手动变速器设计,并经过校验和catia有限元优化,证明设计的变速器能够符合现实功用要求,设计方案具有比较强的可借鉴性。
关键词汽车工程;变速器;设计;手动;
Abstract
Gearbox is the one ponent of the vehicle duty of this design is to design a manual transmission used in the Tiny gears, it is the countershaft-type transmission transmission has two prominent merits: firstly, the transmission efficiency of the direct drives keep high ,the attrition and the noise are also slightest;Secondly ,it is allowed to obtain in the bigger gear ratio of the first gear when the center distance in smaller.
According to the contour, track, wheel base, the vehicles weight, the all-up weight as well as the highest speed and so on, union the engine model we can obtain the important parameters of the max power, the max torque, the displacement and so on. According to the basic parameters of the certain saloon, choose the suitable final drive ratio. According to the above parameters, combining the knowledge of automobile design, automobile theory , machine design and so on, calculate the correlated parameters of the gearbox and proof the rationality of the design.
The design gives a plan of the mechanical gearbox and achieves a kind of mechanical gearbox after rigorous design has passed calibration and Finite element has proved to be fit for function and use for reference perfectly.
Key Words Automotive engineering,Transmission,Design,Manual
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