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ID:40048239
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页数:8页
时间:2019-07-18
《Analysis of thermal errors in a high-speed micro-milling spindle》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、ARTICLEINPRESSInternationalJournalofMachineTools&Manufacture50(2010)386–393ContentslistsavailableatScienceDirectInternationalJournalofMachineTools&Manufacturejournalhomepage:www.elsevier.com/locate/ijmactoolAnalysisofthermalerrorsinahigh-speedmicro-milli
2、ngspindlenE.Creighton,A.Honegger,A.Tulsian,D.MukhopadhyayMicrolutionInc.,4038NNashvilleAve,Chicago,IL60634,USAarticleinfoabstractArticlehistory:ThermallyinducederrorsaccountforthemajorityoffabricationaccuracylossinanuncompensatedReceived16March2009machin
3、etool.Thisissueisparticularlyrelevantinthemicro-machiningarenaduetothecomparableReceivedinrevisedformsizeofthermalerrorsandthecharacteristicdimensionsofthepartsunderfabrication.Aspindleofa1November2009micro-millingmachinetoolisoneofthemainsourcesoftherma
4、lerrors.OthersourcesofthermalerrorsAccepted2November2009includedriveelementslikelinearmotorsandbearings,themachiningprocessitselfandexternalAvailableonline11November2009thermalinfluencessuchasvariationinambienttemperature.Thebasicstrategyforalleviatingthe
5、Keywords:magnitudeofthesethermalerrorscanbeachievedbythermaldesensitization,controlandMicro-millingcompensationwithinthemachinetool.ThermalcompensationThispaperdescribesaspindlegrowthcompensationschemethataimstowardsreducingitsHigh-speedspindlethermally-
6、inducedmachiningerrors.TheimplementationofthisschemeissimpleinnatureanditcanMicro-machiningbeeasilyandquicklyexecutedinanindustrialenvironmentwithminimalinvestmentofmanpowerSpindlegrowthmodelandcomponentmodifications.Initiallyafiniteelementanalysis(FEA)isc
7、onductedonthespindleassembly.ThisFEAcorrelatesthetemperaturerise,duetoheatingfromthespindlebearingsandthemotor,totheresultingstructuraldeformation.Additionally,thestructuraldeformationofthespindlealongwithtemperaturechangeatitsvariouscriticalpointsisexpe
8、rimentallyobtainedbyasystemofthermocouplesandcapacitancegages.TheexperimentalvaluesofthetemperaturechangesandthestructuraldeformationofthespindlequalitativelyagreewellwiththeresultsobtainedbyFEA.Consequently,athermaldispla
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