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1、-???????????????????????????THERMALCHARACTERISTICSANALYSISANDSTRUCTUREOPTIMIZATIONFORSPINDLECOMPONENTSOFHEAVYDUTYMILLING-BORINGMACHINETOOL???ξ????2012?7????к????TG548?????10213???к????621?????????????????????????????????????お???????催???????????????????????????????????ㄨ????
2、2012?7???????????????ClassifiedIndex:TG548U.D.C:621DissertationfortheMasterDegreeinEngineeringTHERMALCHARACTERISTICSANALYSISANDSTRUCTUREOPTIMIZATIONFORSPINDLECOMPONENTSOFHEAVYDUTYMILLING-BORINGMACHINETOOLCandidate?DengJianSupervisor?Prof.GaoDongAcademicDegreeAppliedfor?Mas
3、terofEngineeringSpeciality?MechanicalManufacturingandAutomationAffiliation?SchoolofMechatronicsEngineeringDateofDefence?July,2012Degree-Conferring-Institution?HarbinInstituteofTechnology?????????????????????????????????????????????????????????ㄝ????Ё??????催?????????????????
4、?????????催?????有????????????Н???????????????????????催???????????????????????有?????????????????????????????????????????????????????佪??????????????????????????????????????????????????お???????????????????????????????????????1000r/min???????????????????????????????????1000r/mi
5、n????????????????????????????????偠???????????偠????????Ё??????????催?????有??????????????????????????偠????????????????偠???????????????????????????????乘??????2500r/min????????????????????????催????????????????????????????????????????????????????????????偠????????????????????????
6、?????????????-I-???????????????AbstractNCheavydutymilling-boringmachinetoolismainlyusedforprocessingtheplaneandholeoflargeparts,whichisankeyequipmentinthepillarindustriessuchasnationaldefenseindustry,aerospaceindustryandlargeengineeringmachinery,etc.Highspeedhasbecomeanimp
7、ortantdevelopmenttrendforNCheavydutymilling-boringmachinetool,whichhassignificantimplicationsforimprovingtheprocessingprecisionandefficiencyofmachinetool.AsthecorepartsofNCheavydutymilling-boringmachinetool,spindlecomponentsproducesignificanttemperatureriseandthermaldeform
8、ationinhighspeed,whichdirectlyimpacttheprocessaccuracyandinsomeseverecasescancausethedama
