1畢業(yè)設(shè)計(jì)（論文）外文參考文獻(xiàn)翻譯機(jī)械工程系（院）2008屆題目（中文）電主軸的機(jī)械設(shè)計(jì)（英文）themechanicdesignsofelectricspindles學(xué)生姓名專業(yè)班完成日期：2008年3月23日目錄21.電主軸技術(shù)水平分析（8）2.高速電主軸單元（14）Theelectricaltechnicallevelofmainshaftisanalysed3Abstract:Electricalmainshaftistheprocessingmachinetoolofnumericalcontrolheartparts,thispaperhasintroducedtypicalstructureandtheworkingprincipleofelectricalmainshaft,haselaboratedthecrucialtechnologyofelectricalmainshaft,hassummarizedittodeveloptendency.Keyword:Theelectricalporcelainballofmainshaftmixthebearinglubricationofoilgas1,itisgeneraltostatetheprocessingqualitythatcannotonlyraiseprocessingefficiencysubstantiallybecauseofhighspeedprocessingandcanstillraiseworkpieceapparently,so,itsapplicationfieldisveryextensive,isespeciallyinaerospace,themanufacturingindustriessuchasautomobileandmouldin.Itisspoiltrecentlythatso,themachinetoolofnumericalcontrolthathashighspeedprocesscapabilityhasbecomemarket.Now,thedomesticandinternationaleachfamousmanufacturerofmachinetooladoptstheelectricalstructureofmainshaftextensivelyinthemachinetoolofnumericalcontrol,isespeciallybeingcompoundtoprocessmachinetoolandmuchaxletounitetomove,polyhedronprocessingmachinetoolandthemachinetoolofparallelconnectionin.Electricalmainshaftistheprocessingmachinetoolofnumericalcontrolheartparts,itsperformanceindexdirectdecisionthelevelofmachinetool,itisthatmachinetoolrealizesbasicconditionandtheprerequisiteofhighspeedprocessing.2theworkingprincipleelectricalmainshaftoftheworkingprinciple,typicalstructureand2.1advantageelectricalmainshaftsofelectricalmainshaftisthedirectmotorrotorofbehollowpackinmainshafton,statorknowssuper-coolingbutcoverfixes,formacompleteunitofmainshaftinthecasingholeofmainshaft,afterstartingeclectricityrotordirectlydrivetheoperationofmainshaft.Thetypicalstructurallayoutwayofthetypicalstructuralelectricalunitofmainshaftof2.2electricalmainshaftsisthatgeneratorsetsupbeforemainshaft,rearaxleChengbetween(aspictureshow),itsadvantageisthattheaxialsizeoftheunitofmainshaftisthebig,medium-sizedmachinetoolofnumericalcontrolshortcomparatively,therigidityofmainshaftbig,powersuitscomparatively；Itisinsufficienttobethenaturallyscatteredhotconditioninthegeneratorinthecasingofmainshaftthatenclosestodifferfrom,hashighertemperaturerise.The1casingsofmainshaftthe2coolingsetsof345importstatorrotorsofcoolingwaterthe6setsof78910former11canexportfeedbackinstallationbearingrearaxlesofcoolingwaterofrunnershaftofmainshaftofmainshaftChengtheadvantageelectricalprovinceofmainshaftof2.3electricalmainshaftshavegonetotakeshiporpositivedrive,the0transmissionsthathaverealizedmachinetoolhaveraisedtransmissionefficiency.Therigidityof4electricalmainshaftgood,rotaryprecisionissexhighrespondfastgood,canrealizeveryhighrotationalspeedandaddandslowdowndegreeanddecideanglestopfastdefinitely(Caxlecontrol),thescopeofspeedadjustmentiswide.3,thecrucialtechnicalconceptofelectricalmainshaftofelectricalmainshaftshouldnotbesimpletounderstandforthemerelyasleeveofmainshaft,andshouldbeasetofassembly,include:Stator,rotor,bearing,thehighspeedinstallationoffrequencyconversionandlubricationinstallandcoolinstallation.Thereforeelectricalmainshaftisthewithhighspeedbearingtechnical,lubricationtechnical,coolingtechnicaltechnical,preciseproductionofdynamicbalancingwiththetechnologiessuchasassemblytechnologyaswellasgeneratorhighspeeddrivesynthesizetoutilize.Thewithhighspeedbearingtechnologyof3.1electricalmainshaftsrealizestheelectricalhighspeedofmainshafttomelt,ispreciseandcrucialtobetheapplicationofhighspeedprecisebearing.Nowthebearingthatappliedinhighspeedpreciseelectricalmainshafthavepreciserollbearingandliquidmovementpressbearingandgaspressbearingandmagneticsuspensionbearingquietly,butitispreciseanglecontactporcelainballbearingandprecisecylinderrollerbearingmainly.Itishighthatliquidmovementpressthestandardizationlevelofbearing；Gaspressesbearingquietlytobeimproperforintherateoccasionofgreatmerit；Magneticsuspensionbearingbecauseofcontrolsystemcomplex,priceisexpensive,itspracticalitygetsrestriction.Anglecontactballbearingcannotonlyatthesametimebearradialandaxialload,andrigidityhigh,highspeedperformancegood,structuralsimplecompact,kindspecificationsnumerousrepaireasilytochange,thusinelectricalmainshaft,getextensiveapplication.Nowalongwiththedevelopmentofporcelainbearingtechnology,theelectricalbearingofmainshaftofthemostapplicationistomixporcelainballbearing,rollbodyuseSi3N4porcelainball,withthestructureoflittlepearldensepearl,bearingferruleenclosesforGCr15steel.Isthiskindoftomixbearingtopasstoreducelittlecentrifugalforceandtopmoment,reducethefrictionbetweenlittleballandracewaygroove,sogetlowertemperatureriseandbetterhighspeedperformance.Porcelainballmixbearingandsteelballbearingcompare,advantageisasfollows:(1)theporcelainballbearingfrictionperformanceofporcelainandsteelcompositionverygood,canreducethestressofmaterialandlubricant.(2)becauseofporcelaindensitylow,canreducethecentrifugalforceinoperation.(3)theheatwithlowerporcelaincoeffi