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1、附录一KnowledgeOnTheBearingsandShaftThebearingsarefixedandreducetheloadcoefficientoffrictionintheprocessofmechanicaltransmissioncomponents.Canalsosaythatwhentheotherpartsontheshaftrelativemotion,usedtoreducethefrictioncoefficientintheprocessofpowertransferandfixedthemech
2、anicalpartstomaintainthepositionoftheshaftcenter.Bearingsareimportantpartsofmodernmachineryandequipment.Itsmainfunctionistosupportthemechanicalrotatingbodytoreducetheloadcoefficientoffrictionofthemechanicalequipmentinthetransmissionprocess.Accordingtothedifferentnatur
3、eoffrictionofmovingparts,bearingscanbedividedintotwotypesofrollingbearingsandplainbearings.NanoLake,Italy,foundaRomanvesseldiscoveredearlyinstanceofballbearings.Thewoodenballbearingsareusedtosupporttherotatingdesktop.Shipconstructionin40BC.ItissaidthatLeonardodaVincii
4、nthe1500orso,aballbearingthroughdescription.,Thereisaveryimportantpointistheballcollision,causingadditionalfrictionbetweentheballbearingsofallkindsofimmaturefactors.Butcanputtheballintoasmallcagetopreventthisphenomenon.The17thcentury,Galileofixedball",or"cageball"ball
5、bearingsdidtheearliestdescription.Butthenquitealongtime,thebearingshavebeeninstalledonthemachine.ThefirstpatentontheballchanneltheCarmarthenPhilipVaughanin1794.In1883,FriedrichFischerproposedtheideaoftheuseofsuitableproductionmachinegrindingthesamesize,roundnessaccura
6、teball.Thislaidthefoundationtocreateanindependentbearingindustry.In1962,FAGthetrademarkhasbeenmodifiedandarestillusedtodayandbecomeanintegralpartofthecompanyin1979.In1895,HenryTimkendesignedthefirsttaperedrollerbearings,threeyearslaterobtainedapatentandtheestablishmen
7、toftheTimkenCompany.In1907,SKFbearingfactorySventemperatureQwestdesignedthefirstmodernself-aligningballbearings.Studyitsroleshouldbeintermsofsupport,thattheliteralinterpretationisusedtobearingaxis,butthisisonlypartofitsroleinsupportingitsessenceistobeabletobeartheradi
8、alload.Canalsobeunderstoodthatitisusedtoafixedaxis.Afixedaxissothatitcanonlyachieverotation,andcontrolofaxialandradialmoveme
