已阅读5页,还剩13页未读, 继续免费阅读
版权说明:本文档由用户提供并上传,收益归属内容提供方,若内容存在侵权,请进行举报或认领
文档简介
外文翻译原文:Proceedingsofthe7thICFDM2006InternationalConferenceonFrontiersofDesignandManufacturingJune19-22,2006,Guangzhou,ChinaTHESWAGINGTECHNOLOGYUSEDINSHAFTCLINCHINGASSEMBLYFORAUTOMOTIVEHUBBEARINGUNITXiaoYunya1,2,ZhouZhixiong1andLvJianmin31CollegeofMechanicalandAutomotiveEngineering,HunanUniversity,China2DepartmentofElectromechanicalEngineering,ShaoguanUniversity,China3ShaoguanSoutheastBearingCo.,Ltd.,ChinaAbstract:Recently,shaftendclinchingisbeingadoptedinthehubbearingunitassembly,whichwillraiseastechnologicaltrendandgraduallyreplaceclampnutinfuture.Inamachinereconstructedfromlathe,thesampleofshaftendclinchedhubunitissuccessfullymanufacturedbyswagingtechnologywithgivenparameters.Sometestsconfirmthattheshaftendclinchinghubunithasfunctionsgreaterthanthetraditionalhubunitwithclampnut.Intheend,thefutureapplicationandthefurtherresearchdirectionoftheswagingtechnologyarediscussed.KeyWords:hubbearingunit,swaging,shaftclinching,assemblyHubunitbearingsarewidelybeingadoptedforcarsastheyarelighterandstrongerandeasilytomounting.Inthehubbearingunitassembly,theshaftclinchingtighteningreplacesclampnutandbecomestechnologicaltrend.Itisadoptedinthemostlyfamousinternationalcompaniesofbearingmanufacture.However,thedeformationoftheworkpieceinclinchingprocessiscomplexanddifficulttobecontrolled.Itbringsphenomenonssuchasdistortionofstructureintheconnectingarea,shortageofsupportingrigidity,inadequacyofstrength,disqualificationofrotationalaccuracyandlackoflife.Thusleadsthehubunittoinvalidationeasily.Uptonow,theswagingtechnologyusedinshaftclinchingforhubunitisnotwellmastered.Withthesupportfromsomecorporations,thepilotstudyoftheswagingtechnologyiscompleted.Theproblemsfromtechnicsandequipmentofclinchingaresolved,andthesampleofswagededgeofhubbearingunitismanufacturedsuccessfully.1.IntroductionHubbearingunitisassembledfromseveralcomponents,whichispre-adjustedandlubricatedforlife.Theunitwasoriginallydesignedforuseincarsandtruckstoreplacethetraditionaltaperrollerbearings,whichisreadytoinstallandfreemaintenance.Withthehubbearingunitsnotonlythenumberofparts,butalsotheoverallweightofthewheelarrangementisreduced.Theyalsoreduceassemblytimebecausetheydonotrequireanyspecialadjustment.Eachunitisself-containedandreadytobeboltedinplace.ThiskindofbearinghascomethroughthreegenerationssinceitwasdesignedbySKFin1938.The4thgenerationhubunitisnowunderdevelopmentthoughithasnotyetbeenmass-produced.Figure1illustratesthestructureofhubbearingunits3.The1stgenerationhubbearingunitiscomposedoftwosingle-rowbearingswiththeirouterringsintegrated,wheregreaseisfilledwithseals.Comparedwiththe1stgeneration,the2ndgenerationhubbearingunitismuchmorelightweightandminiaturization,whichhasintegratedflangeintotheouterringof1stgenerationwheelbearing.The3rdgenerationhubbearingunitisanadvancedtypeof2ndgeneration,whichtheoutboardinnerringoftheinner-ringrotationtypehubunitandhub-shaftareintegrated.Inthisgenerationhubunit,numberofbuilt-inhigh-performancesensortypehasincreased.2Figure.1HubunitbearingsTofurtherreducetheweightandsizeofthehubbearingunitandimproveitsreliability,NSKhasrecentlydevelopedanovelshaftendclinchinghubunit.Inthenewhubdesign,theclampnutwhichfastenstheinnerandouterringstogetherisreplacedwithaswagededge.Theswagingthatusedinshaftclinchingisatechniquethatdeformstheendpartofhubshaftbyswagingforginginwhichinboardofinnerringandpropershaftforcebythisdeformation.Figure2showsexamplesof3rdgenerationtypeclinchedshafthubunitsforadrivenwheelanddrivewheelrespectively.Inaddition,thistechniqueisalsoapplicabletotheinnerringrotationtype2ndgenerationhubunits2.drivenwheeldrivewheelFigure2ShaftclinchinghubunitThereareseveraladvantagesoftheswagedhubunitincomparisontoconventionalretainingnutassemblies.Thenutissavedintheswagedhubunit.Theswagedhubunitssizeissmallerandweightislessthantheconventionalretainingnutassemblies.Thestructureoftheunitbecomescompact.Andthevehiclefuelconsumptionisreduced1.Theclampingforcecanbecontrolledaccuratelyduringtheswagingprocess.Thentheeffectoferrorfrompartsisavoided.Thefluctuationofpre-adjustedforceisreducedgreatly.Aseveryhubunitgainsthebestpre-adjustedforceafterassembly,thelifeofbearingunitcanbeextended.Theclinchingtighteningisanun-reversibleassembly.Theassemblyisnotfailurethoughthevibrationcausedfromrunningprocessisbeenloadedonthehubunit.Theshaftclinchingprocessiscapabletoperfectlycomplywiththeproblemof“looseningoftightening”thatwasimpossibletobesolvedforthenuttightening.Thentheshaftclinchingimprovesthereliabilityandsafetyoftheproductgreatly.Thistechnologyenablesresourceandenergyofthemanufactureofhubbearingunittobesaved.Duetopredigesttheassemblyprocess,thecostofthewholevehicleisfurtherreduced.2.ProcessandExperimentTheswagingprocessisanapplied“rockingdieforging”.Figure3illustratestheprincipleoftherockingdieforging3.Onthecenterpointofaworkpiece,theaxisOYofaconicalupperdie,whichistitledbyananglefromthecenterlineOXofthework,isturnedabouttheOXaxis.Thisgivesrockingmotiontotheupperdie,andtheworkpieceiscontinuouslyformedastheupperdiecontinuestherockingrotation.Themotionsneededbytheshapingprinciplecanbeachievedfromalathe.AsFigure4showing,arollingheadisfixedontheendofthelatheshaft.Theheadistiltedananglefromthecenterlineofworkpieceandself-rotating.Theworkpieceisfixedontheworktablerestructuredfrom
温馨提示
- 1. 本站所有资源如无特殊说明,都需要本地电脑安装OFFICE2007和PDF阅读器。图纸软件为CAD,CAXA,PROE,UG,SolidWorks等.压缩文件请下载最新的WinRAR软件解压。
- 2. 本站的文档不包含任何第三方提供的附件图纸等,如果需要附件,请联系上传者。文件的所有权益归上传用户所有。
- 3. 本站RAR压缩包中若带图纸,网页内容里面会有图纸预览,若没有图纸预览就没有图纸。
- 4. 未经权益所有人同意不得将文件中的内容挪作商业或盈利用途。
- 5. 人人文库网仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对用户上传分享的文档内容本身不做任何修改或编辑,并不能对任何下载内容负责。
- 6. 下载文件中如有侵权或不适当内容,请与我们联系,我们立即纠正。
- 7. 本站不保证下载资源的准确性、安全性和完整性, 同时也不承担用户因使用这些下载资源对自己和他人造成任何形式的伤害或损失。
最新文档
- 2023年环境污染防治专用设备项目概述报告
- 新版教书育人心得体会(33篇)
- 学生上网课的心得体会范文(34篇)
- 班干部培训心得体会800字5篇
- 老师继续教育培训的心得体会范文(32篇)
- 军训心得体会范文十篇
- 收看家校共育大课堂心得体会6篇
- 军训心得体会大学(35篇)
- 寒假培训心得及收获(32篇)
- 军训拓展心得体会范文(26篇)
- 幕墙施工人员安全教育试卷(共3页)
- 医疗废物上墙制度
- 物流部绩效考核细则
- 2020小学四年级下册科学课件-第1课《电和我们的生活》人教版(新课标)(39张)ppt课件
- 客运公司运行监控违法违规行为处理办法
- 我的 高铁路基沉降观测方案
- 真崎航の21部
- 江苏省教学成果奖申报表
- 电梯井、集水坑施工方案(完整版)
- 平手盘分析图文[整理版]
- 2006年工资改革以来有关工资政策以及人事编制系统有关问题的释义与解答.doc
评论
0/150
提交评论