六西格玛实施案例-AFS.pdf

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1、SixSigmaProjectSIXSIGMADMAICTReduce“Dimensional”RejectionsRelatedtoGrindingProcessonPrecisionAerospaceFastenersSonDTran,DirectorofQA,AFS-IndustryOperations1ReduceDimensionalVariation-DefineSIXSIGMADMAICTDMAICREVIEWCONTROLDEFINEIMPROVEMEASUREANALYZEDevelopcharterMaptheprocessUnderstandthevoiceof

2、thecustomer2ReduceDimensionalVariation-DefineSIXSIGMADMAICTProjectOverview:BusinessCaseInternalrejectionsofTitaniumproductscausesignificantscrap,reworkandcustomerreturns.ThislevelofrejectionhasaffectedourKeyPerformanceIndicators(KPI),customerbacklogs,andQualityandDeliveryPerformanceratingstomaj

3、orOEM(OriginalEquipmentManufacturer).ReductionofInternalrejectionswillincreasecustomersatisfactionandimproveourKPI.ProblemStatementDimensionalrejectionsrelatedtotheGrindingprocess(es)ofTitaniumHi-LokinCells131,132and133attributedtoabout2%rejectionsoftotalpiecescompleted-to-storethelastsevenmont

4、hs(Sep01-Feb02).Thisattributedtomonthlyscraploss,plussignificantrejectionsatsubsequentprocesses(i.e.,ThreadRoll),andincreasedinreworkandcustomerreturnscosts.GoalStatementReducedimensionalrejectionsrelatedtoGrindingprocess(es)inCell131,132&133,by50%fromcurrentFPYbase-lineplusannualreductioninscr

5、apcostof30%endofAugustfiscalyear2002..3ReduceDimensionalVariation-DefineSIXSIGMADMAICTCustomerNeeds/Requirements●KeyInternalcustomersforWorkCells131,132&133areThreadRollDepartmentandInspection.●ExternalcustomersaremajorOEM.●Customersareexpectingtoreceiveproducts(groundpartsorfinishedparts)thatw

6、illmeetdimensionalspecificationrequirements(orGrind-Defect-Free)everytime.OperationalDefinition-KQC(CTQ)Forthepurposesofthisproject,●GrindDefectsDimensionalcharacteristicsproduceby(oraffectedby)theGrindingprocess(es)ofTitaniumHi-LokinCell131,132&133thatdonotmeetspecifications.ExamplesareGripdia

7、meter,Pre-RollTD,GripLength,etc.ProjectCharterSeeattachedcharts4ProductImpactedTitaniumHi-LokProductImpactedSales(03proj$)TitaniumSIXSIGMABlackBeltSonTranTelephoneNumber626-855-8545ChampionB.FinkenhagenSBU&PlantCOIUnruhDMAICTStart