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1、附录一KnowledgeOnTheBearingsandShaftThebearingsarefixedandreducetheloadcoefficientoffrictionintheprocessofmechanicaltransmissioncomponents.Canalsosaythatwhentheotherpartsontheshaftrelativemotion,usedtoreducethefrictioncoefficientintheprocessofpowertransferandfixe
2、dthemechanicalpartstomaintainthepositionoftheshaftcenter.Bearingsareimportantpartsofmodernmachineryandequipment.Itsmainfunctionistosupportthemechanicalrotatingbodytoreducetheloadcoefficientoffrictionofthemechanicalequipmentinthetransmissionprocess.Accordingtot
3、hedifferentnatureoffrictionofmovingparts,bearingscanbedividedintotwotypesofrollingbearingsandplainbearings.NanoLake,Italy,foundaRomanvesseldiscoveredearlyinstanceofballbearings.Thewoodenballbearingsareusedtosupporttherotatingdesktop.Shipconstructionin40BC.Itis
4、saidthatLeonardodaVinciinthe1500orso,aballbearingthroughdescription.,Thereisaveryimportantpointistheballcollision,causingadditionalfrictionbetweentheballbearingsofallkindsofimmaturefactors.Butcanputtheballintoasmallcagetopreventthisphenomenon.The17thcentury,Ga
5、lileofixedball",or"cageball"ballbearingsdidtheearliestdescription.Butthenquitealongtime,thebearingshavebeeninstalledonthemachine.ThefirstpatentontheballchanneltheCarmarthenPhilipVaughanin1794.In1883,FriedrichFischerproposedtheideaoftheuseofsuitableproductionma
6、chinegrindingthesamesize,roundnessaccurateball.Thislaidthefoundationtocreateanindependentbearingindustry.In1962,FAGthetrademarkhasbeenmodifiedandarestillusedtodayandbecomeanintegralpartofthecompanyin1979.In1895,HenryTimkendesignedthefirsttaperedrollerbearings,
7、threeyearslaterobtainedapatentandtheestablishmentoftheTimkenCompany.In1907,SKFbearingfactorySventemperatureQwestdesignedthefirstmodernself-aligningballbearings.Studyitsroleshouldbeintermsofsupport,thattheliteralinterpretationisusedtobearingaxis,butthisisonlypa
8、rtofitsroleinsupportingitsessenceistobeabletobeartheradialload.Canalsobeunderstoodthatitisusedtoafixedaxis.Afixedaxissothatitcanonlyachieverotation,andcontrolofaxialandradialmoveme
