摘要本说明书主要介绍了中国大学生方程式赛车后驱动桥的设计。首先介绍了赛车后桥的设计意义和研究现状。然后就后驱动桥中各个关键部件进行了方案论证分析和选择。其中包括了大链轮、链条、差速器、球笼等外购件和差速器支架、吊耳、半轴、轮毂等自制件。对于外购件，主要通过计算确定了选购原则和购得部件型号。对于自制件，在保证强度、减轻质量，实现最优的原则上进行了设计计算。63528

利用CATIA软件画出了所有零部件的三维视图，并对其中关键部件进行了强度分析校核。尤其对于自制件，根据不同工况，对其进行了有限元分析，从而实现优化。并利用CAD对主要零部件绘制了工程图，确保所设计零件能够满足实际要求。

毕业论文关键词  ：后驱动桥  大链轮  轮毂  校核

Title    The Design of the Rear Axle of FSAE Racing Car   

Abstract This specification mainly introduces the design of rear axle in the FSAE. Firstly, the paper presents the design significance and research status.  Secondly, the scheme comparison analysis and selection are taken on the key components. Of all the analysises,include the bought-in components such as the big chain wheel, chain, differential, cage and the self-made parts such as the differential carrier, lug, axle, wheel hub. For purchased parts, the purchased principle and the part version are made on the basis of calculation. For self-made parts, take the calculation according to the principle of ensuring the strength, reducing the quality, achieving the optimal.

Then take advantage of CATIA to draw the 3D view of all the parts. For the key components, take the strength check analysis. Especially for the self-made parts, carry on the finite element analysis under different working conditions.So as to realize the optimization. Finally take the use of CAD to draw the engineering drawings the main parts, to ensure that the design can meet the practical requirements of parts.

Keywords  : Rear drive axle, big chain wheel, wheel hub, check

目 录

1 绪论 1

1.1 课题研究背景 1

1.2 课题研究现状 1

1.3 本课题的主要研究内容 1

1.4 驱动形式 2

1.5 主要参数 2

1.5.1 质量参数 2

1.5.2 轴距 2

1.5.3 轮距 2

1.5.4 轮胎半径 2

2 后驱动桥传动部分的设计 2

2.1大链轮和链条的设计计算 2

2.1.1 赛车传动系的功用 2

2.1.2已知条件 2

2.1.3设计计算 3

2.1.4总结 5

2.2法兰盘的设计计算 5

2.2.1 法兰盘的作用 5

2.2.2设计 5

2.2.3法兰盘受力计算 6

2.2.4法兰盘有限元分析 6

3 后驱动桥差速器部分的设计计算 8

3.1 差速器及差速器壳体 8

3.1.1 差速器的作用 8

3.1.2 差速器壳的作用