轿车差速器的设计与桥壳有限元分析

1轿车差速器设计及驱动桥壳的有限元分析ee（ee）指导老师：ee[摘要]本次毕业设计主要是对安装在驱动桥的两个半轴之间的差速器进行设计，主要涉及到了差速器非标准零件如齿轮结构和标准零件的设计计算，同时介绍了差速器的发展现状和差速器的种类，对于差速器的方案选择和工作原理也作出了简略的说明，通过运用PRO/E软件对差速器进行三维建模工作，差速器的非标准零件的设计计算，比如行星齿轮，半轴齿轮，垫圈，还有十字轴,通过这一系列的计算，得到了详细准确的设计参数，为PRO/E的差速器建模工作奠定了基础，工程图的制定则是根据对所测绘零件的技术要求的分析，进一步巩固和完善所学的机械制图知识，结合已学的专业知识，合理的选择装配公差、加工余量,涉及的专业知识广泛，对提高自身的专业知识应用能力有重大的意义。对差速器的工作状况进行运动仿真，运动仿真是运用三维建模后装配，并使用销钉、刚性等各种连接后加上各类运动副，如齿轮副、凸轮机构等，添加伺服电机对所设计的装配体进行运动学分析通过仿真输出数据与理论数据进行比较，并检查干涉，修改不合理零部件。并对驱动桥壳的工况进行有限元分析，有限元结构分析则是通过对零件三维模型的载荷，约束等情况的分析，结合所学有限元理论，对零件的强度在PRO/E的结构分析模块下做校核，并根据计算的应力对零部件做相应的改进设计，为企业生产提供理论基础。[关键词]行星齿轮，半轴齿轮，十字轴，运动仿真，有限元分析2TheDesignofVehicle’sDifferentialandtheFiniteElementAnalysisabouttheDrivingAxleHousingee(ee)Tutor:eeAbstract:Thedesignofthemaindriversontheinstallationofthebridgeinbetweenthetwoaxledifferentialdesign,mainlyrelatedtothedifferentialstructureofnon-standardpartssuchasgearpartsandstandardsfordesignandcalculation,butalsointroducedthedevelopmentofdifferentialstatusandthetypeofdifferential.Fordifferentialselectionandtheprincipleoftheprogramhavealsomadeabriefnote.Buildingthedifferential’s3DmodelingthroughtheuseofPROEsofeware,differentialcalculationinthedesignofnon-standardparts,suchasplanetarygear,axleshaftgear,thegasket,andcrossaxis,throughaseriesofcalculation,gettheaccurateanddetaileddesignparameters,forPRO/Edifferentialmodelingworklaidafoundation,formulationisbasedontheengineeringdrawingforthepartsofsurveyingandmappinganalysisofthetechnicalrequirementsofthefurtherconsolidateandimprovetheknowledgeofmechanicaldrawing,combininghastolearnprofessionalknowledge,Reasonableselectiveassemblytoleranceallowanceinvolvesextensiveprofessionalknowledge,toimprovetheirprofessionalknowledgeapplicationabilityisofgreatsignificance.Ontheworkingconditionsofdifferentialmotionsimulation,motionsimulationistouse3dmodelingafterassembly,andusethepinafterconnectedrigid,etcandallkindsofmotionpair,suchasgearCAMmechanism,etc.Addbydesignoftheservomotorassemblykinematicanalysisbycomparingthesimulationoutputdatawiththeoreticaldata,andchecktheinterference,modifyunreasonableparts.Andcarriesonthefiniteelementanalysisontheoperationconditionofthedriveaxlehousing,thefiniteelementstructureanalysisisbasedonaloadofparts3dmodel,theconstraintssuchascaseanalysis,combinedwiththefiniteelementtheory,welearnedaboutthestrengthofthepartsunderthestructureanalysismoduleofPRO/Etodochecking.Andaccordingtothecalculationofthestressesonthepartstodothecorrespondingimprovementdesign.ProvidesthetheoreticalfoundationfortheenterpriseproductionKeywords:planetarygear,axleshaftgear,universaljointpin,exercisesimulation,finiteelementanalysis目录1绪论.........................................................................................................................................11.1汽车差速器研究的背景及意义......................................................................................................11.2汽车差速器国内外研究现状..........................................................................................................11.2.1国外差速器生产企业的研究现状......................................................................................11.2.2我国差速器行业市场的发展以及研究现状......................................................................11.3汽车差速器的功用及其分类..........................................................................................................21.4毕业设计初始数据的来源与依据..................................................................................................32差速器的设计........................................................................................错误!未定义书签。2.1对称式行星齿轮的设计计算...........................................................................错误!未定义书签。2.1.1对称式差速器齿轮参数的确定...........................................................错误!未定义书签。2.1.2差速器齿轮的几何计算图表...............................................................错误!未定义书签。2.1.3差速器齿轮的强度计算.......................................................................错误!未定义书签。2.1.4差速器齿轮材料的选择.......................................................................错误!未定义书签。2.1.5差速器齿轮的设计方案.......................................................................错误!未定义书签。2.2差速器行星齿轮轴的设计计算.......................................................................错误!未定义书签。2.2.1行星齿轮轴的分类及选用...................................................................错误!未定义书签。2.2.2行星齿轮轴的尺寸设计.......................................................................错误!未定义书签。2.2.3行星齿轮轴材料的选择.......................................................................错误!未定义书签。2.3差速器垫圈的设计计算...................................................................................错误!未定义书签。2.3.1半轴齿轮平垫圈的尺寸设计...............................................................错误!未定义书签。2.3.2行星齿轮球面垫圈的尺寸设计...........................................................错误!未定义书签。3差速器部分三维建模.................................................................................错误!未定义书签。3.1三维软件PRO/E的介绍..................................................................................错误!未定义书签。3.2各零部件实体模型的建立............................