CETOL-6-Sigma-for-ProE-V8.4(Reference-Material-Ans

Page2-6BasicTrainingCETOL6Version8.2Exercise2-1:Worst-CaseAnalysisofaShaftFortheshaftassemblyshownbelow,theremustbeclearancebetweentheSNAP-RINGandBEARINGforthedesigntofunctionproperly.ThenominalclearancebetweentheendoftheBEARINGandtheSNAP-RINGis.060inch.Task1.Calculatetheworst-casetolerancefortheclearancebetweentheBEARINGandSNAP-RING.inTTWCWCGAPGAP066.0005.020.001.005.001.020.001.005.001.007.Task2.Whatistheminimum(worstcase)clearancebetweentheBEARINGandSNAP-RING.0.0600.0660.006(Interference)CETOL6Version8.2BasicTrainingPage2-13Exercise2-2:CalculatingPartQualityMetricsYouaretryingtoholda0.490±0.020dimensiontoleranceusingamanufacturingprocesswiththefollowingcharacteristics:=0.5020=0.0060Task1.Calculatethefollowingvalues:1.CalculatethevalueforCp.111.10060.06470.0510.06LTLUTLCp2.CalculatethevalueforCpk.444.00060.06016.00060.06490.0502.02470.0510.062pkpkCTμLTLUTLCPage2-14BasicTrainingCETOL6Version8.2Exercise2-3:AnalysisofaShaftCalculatethestatisticalvariationfortheassemblyshownbelow.Task1.CalculatethestandarddeviationfortheclearancebetweentheBEARINGandSNAP-RING.AssumeallindividualparttoleranceshaveaCpof1.0withnormallydistributedmanufacturingprocesses.6·6·2·T6·T3.0073.0013.0053.0013.0203.0013.0053.0013.0203.0053