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36620066MATHEMATICSINPRACTICEANDTHEORYVol136No16June,2006DMAIC(,300300):DMAIC.DMAIC(),D328.D328,,D328.,,DMAIC.:DMAIC;;;:2006203230:(HNAGB2004208201),.,,,.,;(DMC)(DOC)15%()20%().,,,,.13%()17%().,.,.,,.DMAICD328,DMAIC[1].1DMAIC,,(ProblemStatement)(DefectsDefinition)(GoalöObjective)ö(RisksöConstraints)(Team)(Affected)(EstimatedFinancialSavings).D328AUXILEC,,81602121.,16V,800A,160RPM,27lb.ft(3.7m.kg).,30V,400A,12KW,720012300RPM.,8.,.CMM[2],600,.20025202002723,21,.,(),14.544.15016.10,12.5,1()..(Defect(s)Definition):D328(8160121)13,.(GoalöObjective):D328(8160121)13.ö(RisksöConstraints):.(Team):.(EnterpriseMetricsAffected):.(EstimatedFinancialSavings):D328(8160121),()1ö,688,1.544,80,1.5443688380=8.5.2,,,.,.D3281.1D328,2002520200272321,.,X,Y.D3282.33.1,,431362D328;,,,,.,:1)(METHOD):.2)(MACHINE):.3)(MATERIAL):.,.4)(MEASURE):.5)(MANPOWER):.6)(ENVIRONMENT):,.5M21E[3].,;,,,.1):(),ö.3D3282):,.,:,[4].3):,,.4):,.3.23.2.1D328,MINITAB[5]3.Zst=0.1958,Zshift=0.6022,Zlt=-0.4063DPMO=655422:.3.2.2MINITAB,,4.(ParetoChart)5316:DMAIC4D3285,,.:D328,48.4%,31.3%,,D32813,(KPOV:KeyProcessOutputVariable),.3.2.3(KPOV)3.2.3.1,,GRINDINGTIME,TRACE,:14.MINITAB,:TheRegressionEquation:GRINDINGTIME=-47+243TRACEP-Value=0.0010.05,R-Sq(adj)=65.6%(KPIV:KeyProcessINPUTVariable).3.2.3.21):20KHZ,.,,,631366(Cause2effectDiagram).1000,,,.2)?,,,,.,,7,.3),(E).:14.Rc.CLEANTIME,,ADHESION.MINITAB,:TheRegressionEquation:CLEANTIME=5.82-0.814Rc+1.23ADHESIONP-Value=0.0110.05,R-Sq(adj)=84.0%,.44.11.7316:DMAIC1.1.,,,,,,;,,,;,,.2..2002.8.1.1.,,,,,,,;,,,;,,.2..2002.8.1..2002.8.18(Cause2effectDiagram)4.29.4.310.4.411.4.512.Zst=31836415,Zshift=01765604,Zlt=31070811DPMO=1118DMAICD328,.5,DMAIC,,.5.12.5.215.831369102........,10,,,,,,,.9316:DMAIC1112613DMAIC;DMAICD328,,,,,DMAIC.:[1].6R[J].,2003,21(Suppl):5860.LiWeimin.Apply6Rtoimprovebusinessprocessabilityofairlines[J].JournalofCivilAviationUniversityofChina,2003,21(Suppl):5860.[2]AUXILECCompanyLtd.ComponentMaintenanceManual[Z].France:AUXILECCompanyLtd,2000.[3]ThomasPyzdek.TheCompleteGuidetoSixSigma[M].USA:QAPublishingL.L.C,1999.[4]ForrestW.BreyfogleË.ManagingSixSigma[M].USA:JohnWiley&SonsInc,2001.[5]AMinitabInc.MINITABUsersGuide2[Z].USA:MinitabInc,2000.04136ADMAICApproachtoOptimizetheProcessofReplacingBrushesofStart-generatorLIWei2min(GeneralAviationTrainingCenter,CivilAviationUniversityofChina,Tianjin300300,China)Abstract:Thepaperdiscussesthefunctionsofoptimizingprocesses,reducinghidingcost,improvingworkingefficiencyinaviationmaintenancebusinessbyexertingSixSigmaManagementDMAICmethod.ItdistinguishedtheStart2generatorFixedPolishingandtheUltrasonicCleaningKPOV(KeyProcessOutputVariable),theDepthofcreaseofcommutatorsandDegreeofclingingcarbonpowderandinsulatorresistanceKPIV(KeyProcessINPUTVariable)fromthecompleteprocessofreplacingbrushesofD328start2generator,optimizedtheprocessofStart2generatorFixedPolishingandUltrasonicCleaningworkingprocessesofKeyProcessesofreplacingbrushesofD328start2generatorbyDMAICapproach.ItreducedtheeffectiverepairtimeofreplacingbrushesofD328start2generatorandthecostofturnoverforD328start2generator.Itprovidesthevaluablereferenceforoptimizingprocessesfromthebottomtothetopinaviationcomponentmaintenanceregion,andvalidatesthefeasibilityofimplementingSixSigmaManagementDMAICmethodinaviationmaintenanceindustries.Keywords:DMAICapproach;KPOV(KeyProcessOutputVariable);KPIV(KeyProcessINPUTVariable);viationStart2nerator;ffectiveRepairTime1416:DMAIC