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Solidworks(cosmosworks 汽车驱动桥 有限元分析 摘 要

随着汽车对安全、节能、环保的不断重视,汽车后桥作为整车的一个关键部件,其 产品的质量对整车的安全使用及整车性能的影响是非常大的, 因而对汽车后桥进行有效 的优化设计计算是非常必要的。驱动桥作为汽车四大总成之一,它的性能的好坏直接影 响整车性能,而对于载重汽车显得尤为重要。当采用大功率发动机输出大的转矩以满足 目前载重汽车的快速、重载的高效率、高效益的需要时,必须要搭配一个高效、可靠的 驱动桥。驱动桥一般由主减速器、差速器、车轮传动装置和驱动桥壳等组成。所以采用 传动效率高的单级减速驱动桥已成为未来重载汽车的发展方向。

本文参照传统驱动桥的设计方法进行了载重汽车驱动桥的设计。 本文首先确定主要 部件的结构型式和主要设计参数;然后参考类似驱动桥的结构,确定出总体设计方案; 最后对主,从动锥齿轮,差速器圆锥行星齿轮,半轴齿轮,全浮式半轴和整体式桥壳的 强度进行校核以及对支承轴承进行了寿命校核。

本设计具有以下的优点: 由于的是采用中央单级减速驱动桥, 使得整个后桥的结构简单, 制造工艺简单,从而大大的降低了制造成本。并且,弧齿锥齿轮的单级主减速器提高了 后桥的传动效率,提高了传动的可行性。

关键词:驱动桥,主减速器,差速器,半轴,桥壳 Abstract

To security, energy-conservation, constant attention of environmental protection with the car, the car rear axle is regarded as a key part of the completed car, its product's impact on safe handling and completed car performance of the completed car of quality is very great, therefore is very essential for car rear axle to calculate effective optimization design. The

transaxle always becomes as four major cars, the quality of its performance influences the performance of completed car directly, and seem particularly important to the truck. When adopting the high-power engine to output the big torque in order to meet the need of the fast, heavily loaded high benefit with high efficiency of the truck at present,must match a

high-efficient, reliable transaxle. The transaxle is generally made up of main decelerator, differential mechanism, transmission device of the wheel and transaxle shell,etc.. Adopt transmission with high efficiency single grade moderate transaxle become future heavily loaded developing direction of car already.

With car to security, energy-conservation, constant attention of environmental protection, car rear axle is regard as a key part of the completed car, its product's impact on safe handling and completed car performance of the completed car of quality is very great, therefore is very essential for car rear axle to calculate effective optimization design. This text has carried on the design of the truck transaxle according to the traditional transaxle design method. This text confirms the structural pattern of the main part and main design parameter at first? Then consult the transaxle -like structure, determine the overall design plan? To the main fact finally, the gear wheel of the drivenawl, the taper planet gear of the differential mechanism, semi-axis gear wheel, the floating type semi-axis and shelly intensity of integral bridge check and check the life-span in supporting the bearing completely. It is following to originally design: Because adopt forms central the grades last transaxle,make rear axles whole the of simple structure, manufacturing process is simple, thus big reducing manufacturing cost. And, the single grade of main decelerators of the awl gear wheel of arc tooth has improved the transmission efficiency of the rear axle, have improved the feasibility of the transmission.

Key Words: Transaxle , Main decelerator, Differential mechanism, Semi-axis , Bridge shell

目 录 摘

要 ................................................................................................................................... 1 Abstract................................................................................................................................. 1 目

录 ................................................................................................................................... 2 第 1章 绪论 ......................................................................................................................... 3 1.1 驱动桥概述 ............................................................................................................. 3

1.2 研究现状和发展趋势 ............................................................................................. 5 1.3 课题研究方法 ......................................................................................................... 5 1.4 本课题要解决的主要问题和设计总体思路 ........................................................... 6 第 2章 SOLIDWORKS 及 cosmosworks 介

绍 .................................................................... 6 2.1 Solidworks软件概

述 ............................................................................................... 6 2.2 cosmosworks介绍 ................................................................................................... 7 第 3章 汽车驱动桥 3D 设计 ............................................................................................... 9 3.1概

述 ......................................................................................................................... 9 3.1.1 选择研究对象 ............................................................................................ 10 3.1.2 模型处理 .................................................................................................... 10 3.2建立驱动桥的 3D 模型 .........................................................................................11 3.2.1 进入 SOLIDWORKS 的操作界面 ............................................................. 11 3.3 驱动桥设计的绘制过程 ....................................................................................... 12 第 3章驱动桥的有限元分析 .............................................................................................. 14 3.1驱动桥壳强度分析计算 ........................................................................................ 15 3.2 实现方法 ............................................................................................................... 15 3.3 具体分析步骤 ....................................................................................................... 16 总结与展望 ......................................................................................................................... 26 参考文