中北大学信息商务学院2015届毕业生毕业设计说明书某型重卡驱动桥设计摘要驱动桥是构成汽车的四大总成之一，一般由主减速器、差速器、车轮传动装置和驱动桥壳等组成，它位于传动系末端，其基本作用是增矩、降速，承受作用于路面和车架或车身之间的力。它的性能好坏直接影响整车性能，而对于载重汽车显得尤为重要，采用传动效率高的单级减速驱动桥已经成为未来载重汽车的发展方向。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次设计首先对驱动桥的特点进行了说明，根据给定的数据确定汽车总体参数，再确定主减速器、差速器、半轴和桥壳的结构类型及参数，并对其强度进行校核。数据确定后，利用AUTOCAD建立二维图，再用CATIA软件建立三维模型，最后用CAITA中的分析模块对驱动桥壳进行有限元分析。关键词：驱动桥；CAD；CATIA；有限元分析AbstractDrivieaxleisoneofthefourpartsofacar,itisgenerallyconstitutedbythemaingearbox,thedifferentialdevice,thewheeltransmissiondeviceandthedrivingaxleshellandsoonitisattheendofthepowertrain.Itsbasicfunctionisincreasingthetorqueandreducingspeedandbearingtheforcebetweentheroadandtheframeorbody.Itsperformancewillhaveadirectimpactonautomobileperformance,anditisparticularlyimportantforthetruck.Usingsinglestageandhightransmissionefficiencyofthedriveaxlehasbecomethedevelopmentdirectionofthefuturetrucks.Thisarticlereferredtothetraditionaldrivingaxle'sdesignmethodtocarryonthetruckdrivingaxle'sdesign.Inthisdesign,firstpartistheintroductionofthecharacteristicsofthedriveaxle,accordingtothegivendatetocalculatetheparametersoftheautomobile,thenconfirmthestructuretypesandparametersoftheMainreducer,differentialmechanism,halfshaftandaxlehousing,thencheckthestrengthandlifeofthem.Afterconfirmingtheparameters,usingAUTOCADtoestablish2dimensionalmodel,thenusingCATIAestablish3dimensionalmodel.FinallyusingtheanalysismoduleinCATIAtofiniteelementanalysisfortheaxlehousing.Keywords:driveaxle;CAD;CATIA;finiteelementanalysis目录TOC\o"1-3"\h\z\uHYPERLINK\l"_Toc420677240"1绪论PAGEREF_Toc420677240\h1HYPERLINK\l"_Toc420677241"1.1驱动桥简介PAGEREF_Toc420677241\h1HYPERLINK\l"_Toc420677242"1.2国内外研究现状PAGEREF_Toc420677242\h1HYPERLINK\l"_Toc420677243"1.3驱动桥设计要求PAGEREF_Toc420677243\h1HYPERLINK\l"_Toc420677244"2驱动桥设计PAGEREF_Toc420677244\h3HYPERLINK\l"_Toc420677245"2.1主减速器设计PAGEREF_Toc420677245\h3HYPERLINK\l"_Toc420677246"2.1.1主减速器的结构形式PAGEREF_Toc420677246\h3HYPERL