6SIGMA某工作案例-1

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NOV-23-2000Page10102030ADCFBEBDDEBFCDCEACAFBCDFFCAEABEFEBDAParetoChartoftheStandardizedEffects(responseisForce,Alpha=.05)A:NutDimB:C/LDimC:C/LPoinD:BondE:PointHiF:NutHighDataAnalysisFractionalFactorialFit:ForceversusNutDim,C/LDim,...EstimatedEffectsandCoefficientsforForce(codedunits)TermEffectCoefSECoefTPConstant12.1590.06068200.400.000NutDim3.8441.9220.0606831.670.000C/LDim-2.569-1.2840.06068-21.170.000C/LPoin0.1190.0590.060680.980.351Bond2.8941.4470.0606823.850.000PointHi0.7060.3530.060685.820.000NutHigh-0.106-0.0530.06068-0.880.402NutDim*C/LDim0.1560.0780.060681.290.227NutDim*C/LPoin0.0940.0470.060680.770.458NutDim*Bond-0.006-0.0030.06068-0.050.960NutDim*PointHi0.1310.0660.060681.080.305NutDim*NutHigh-0.106-0.0530.06068-0.880.402C/LDim*C/LPoin0.1060.0530.060680.880.402C/LDim*Bond-0.044-0.0220.06068-0.360.726C/LDim*PointHi-0.031-0.0160.06068-0.260.802C/LDim*NutHigh0.0560.0280.060680.460.653C/LPoin*Bond0.0690.0340.060680.570.584C/LPoin*PointHi0.0810.0410.060680.670.518C/LPoin*NutHigh0.0190.0090.060680.150.880Bond*PointHi-0.044-0.0220.06068-0.360.726Bond*NutHigh-0.106-0.0530.06068-0.880.402PointHi*NutHigh-0.194-0.0970.06068-1.600.141此线以上的Factor是要留意的(A,B,D,E)NutForce的模型等式(ForceRegressionEquation):Force=12.159+1.922(NutDim)–1.284(C/LDim)+1.447(Bond)+0.353(PointHeight)NOV-23-2000Page2SelectValueforMajorFactorCodeFactorLevels最佳值ANutDim+14.1BC/LDim-13.6DBond+13EPointHeight+10.5Nut拔出力越大越好,为了得到最大NutForce,(MaxY)调整X’s的水准.并进行ConfirmingTest.在此种条件下对100ea测试NutForce,对Data进行ProcessCapabilityAnalysis.NOV-23-2000Page312.513.514.515.516.517.518.5LSLLSLProcessCapabilityAnalysisforC3USLTargetLSLMeanSampleNStDev(Within)StDev(Overall)CpCPUCPLCpkCpmPpPPUPPLPpkPPMLSLPPMUSLPPMTotalPPMLSLPPMUSLPPMTotalPPMLSLPPMUSLPPMTotal**13.000015.43081001.013270.97733**0.800.80***0.830.830.00*0.008221.01*8221.016438.16*6438.16ProcessDataPotential(Within)CapabilityOverallCapabilityObservedPerformanceExp.WithinPerformanceExp.OverallPerformanceWithinOverall1314151617181920LSLLSLProcessCapabilityAnalysisforNutForceUSLTargetLSLMeanSampleNStDev(Within)StDev(Overall)CpCPUCPLCpkCpmPpPPUPPLPpkPPMLSLPPMUSLPPMTotalPPMLSLPPMUSLPPMTotalPPMLSLPPMUSLPPMTotal**13.000015.89121000.8837720.877654**1.091.09***1.101.100.00*0.00535.02*535.02493.45*493.45ProcessDataPotential(Within)CapabilityOverallCapabilityObservedPerformanceExp.WithinPerformanceExp.OverallPerformanceWithinOverallI工程能力:改善前:6438PPM改善后:493PPM向上率:92.4%ProcessCapabilityAnalysisforNutForce改善前改善后6,438PPM493PPMNOV-23-2000Page4I-Phase小结Nut业体更换,Diameter尺寸保证,Nut成型情况改善;CarriageLower设计改善,Bond涂抹量标准化;CarriageLower设计改善,增加与Nut接触面积;对不良C/LDiameter进行改善,全部采用现地化部品;对Nut拔出力进行管理,确保Nut与C/L的结合情况。NOV-23-2000Page5I-Phase小结Nut业体更换,Diameter尺寸保证,Nut成型情况改善;CarriageLower设计改善,Bond涂抹量标准化;CarriageLower设计改善,增加与Nut接触面积;对不良C/LDiameter进行改善,全部采用现地化部品;对Nut拔出力进行管理,确保Nut与C/L的结合情况。NOV-23-2000Page6C-Phase1.NutDiameter增加IQC受入检查;2.日日工程不良进行P-管理图;3.作业者S1组立工程标准作业方法制定;4.富钢NUT压入Jig三个月进行GaugeR&R评价;5.Bond涂抹量标准化。NOV-23-2000Page7管理项目-1Nut增加IQC受入检查;检查项目:1.NutDiameter2.Nut外型(中心度,Screw是否破损)作业者S1组立工程标准作业方法制定;标准作业方法:Driver垂直放下,严禁Driver倾斜使用;OKNGDriverNOV-23-2000Page8管理项目-20510150.00020.00030.00040.00050.00060.00070.0008SampleNumberProportionPChartforDefectP=4.87E-04UCL=7.36E-04LCL=2.39E-0411/20~12/08工程不良率P-ChartNOV-23-2000Page96SIGMAProject结束报告书0100020003000400050006000改善前改善后改善前5710改善后542Nut脱落不良率(PPM)向上率=90.5%NOV-23-2000Page106SIGMAProject结束报告书部门指导BBLEADER:杨进PROJECT名TEAM员:周建良,贺志才,邓常松部门长财会TEAM长事务局ChampionNutDiameter不良;Nut业体多元化,Diameter尺寸保证;C/LDiameter&Design不良;C/LDiameter&重新改善设计;Bond涂抹无标准;Bond涂抹量标准化;Nut压入Jig不良,AirPress无管理;Nut压入Jig改善,AirPress增加管理;作业者方法不标准。作业者方法标准化。区分向上率备注工程不良率算出根据(改善前工程不良-改善后工程不良)*日产量*(Head单价+C/L单价)*27天*12月/1000000效果金额(效果金额请将具体的计算依据写出来)改善后550PPM目标1000PPM刘晓星2000-09-032000-12-302000-12-10朴夏律金英浩活动人员FDD林炳默课长CarriageLowerNUT脱落不良改善5710PPM(5710-550)*70000*(6.5+1)*27*12/1000000=877,164RMB(105,682USD)活动开始日预定结束日实际结束日改善前改善前改善后推进时间活动审查主要活动内容概要主要活动成果概要NOV-23-2000Page11■适用的统计方法及问题点■验证现象及改善案,经过Simulation步骤可否导出工程能力分析设备别差异分析GaugeR&R分析P管理图■改善结果的量、质是否达到预期效果■改善活动的参与度(活动人员、时间等)改善的质量达到预期的效果Nut现地化开发及改善贺志才9~11月富钢设备改善杨进10月CarriageMould设计改善杨进10月邓常松&周建良Bond涂抹量标准花改善贺志才,杨进10~11月作业标准化方法制定贺志才9~10月ICMA6SIGMAProject结束报告书

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