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1、Jun．2015HydromechatronicsEngineeringV0l-43No．12HydromechatronicsEngineeringhttp：／／jdy．qks．cqut．edu．onE-mail：jdygcyw@126．cornFailureanalysisforspindlesystemofCNCmachinetoolsbasedonFMECAⅡ一tieZHANG．Li—daZHU1,2DepartmentofChemicalEngineeringMechanics，JilinVocati0nalCollegeOfIndustryandTechnolo
2、gy，Jilln130013，China)．(CollegeofMechanicalScienceandEngineering，fllinUniversity，Changchun130022，)Abstract：ThespindlesystemisthekeysubsystemofCNCmachinetools，ithaslotsoffailuI．eandhascomDa．sonofasinglefailurephenomenon。Thereforefailurephenomenonoftencannotbeusedt0failurediagnosisand，trouble
3、shooting．Inthispaper，F(xiàn)MECAanalysismethodswasused，todeterminethefailurlem0deandcausesofthecomponentsofthespindlesystemofCNCmachinetools，andfurthercalculatethedamagede_eeofeachcorn-ponent·Finally，thedamagedegreeprovidesthereferenceforequipmentrepairstrategy．Keywords：CNCMachinetools，F(xiàn)MECA，Spi
4、ndlesystemdoi：10．3969／j．issn．1001—3881．2015．12．024Documentcode：ACLCnumber：TH17causesoffailure，todeterminetheextentofdamage1Introductioneachcomponentpart，whichhastargetedtheestab．1ishmentofCNCspindlerepairstrategyisimportant．CNCmachinetoolsisacomplexrepairablesystemFMECAisFailureModes，Effec
5、tsandCriticalitvA．[1]，spindlesystemisthekeysubsystemsofCNCnalysis，includingfaultmodeandeffectanalysismachinetools．Theperformanceofspindlesystemdi—(FMEA)andHazardAnalysis(CA)．FMECAisarectlyaffectstheperformanceofthemachines，andbottom—uDsummarizedanalysismethodwhichisthemotionaccuracydirectl
6、yaffectsmachiningaceura．classedbytheseverityofthefailuremodeandproba—cy．Whenthespindlesystemfails．ithaslotsoffail—bilityofoccurrenceofthefailure『2]．Theuseofureandhascomparisonofasinglefailurephenome．FM。ECAisfoundtheweaklinkofproductionthatin．non．Thecommonfailureincludenotturnthespindle．clu
7、deinproductiondesignproductandoperate．，spindlejog，notATC，servoalarm，PLCalarm，hy．FMECAcanalsoprovideevidenceforR(reliability)．draulicsystemalarm，lackofprecision，spindleM(maintainability)，S(security)，T(testability)，Snoise，crashesetc．Thefailuremaybestructuralde—(
