SPC & GR&R & Hypothesis & ANOVA in Minitab Job Aid

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1、HowtoseetheXbarRrangecontrolchartjudgement?HowtodoXbarRrangeControlchartSPAinMinitab?MethodA:MethodB:HowtoUpdateControlChartGraphicAutomatically?HowtodoXbarRrangechart&capabilitystudyinonestep?Note:Thechartercan’tdoGraphicAutomatically?Multipleproductswithlowvolume,controlchartcouldus

2、eZ-MRcharter.HowtodoGR&Rwithouttolerancecompare?3个测量员的均值连线图，点在外越多说明测量系统越有能力；因为点和点是零件之间的差异，UCL-LCL=2A2Rbar是测量系统之间差异的范围，所以零件的差异超越测量系统的差异。3个测量员的均值连线叠加图3个测量员的箱线图GageR&Rfor测量值GageR&RStudy-XBar/RMethod%ContributionSourceVarComp(ofVarComp)TotalGageR&R0.092357.04Repeatability0.039473.01Reprod

3、ucibility0.052884.03Part-To-Part1.2190992.96TotalVariation1.31144100.00Study Var%Study VarSourceStdDev(SD)(6 * SD)(%SV)TotalGageR&R0.303891.8233626.54Repeatability0.198661.1919717.35Reproducibility0.229971.3798020.08Part-To-Part1.104126.6247496.41TotalVariation1.145186.87108100.00Note

4、:GR&Ronlycananalyzetheprecisiondegree,butcan’tanalyzetheaccurate.IfAll“测量值”+100,theGR&Rdataarenotchanged.HowtodoGR&Rwithtolerance(双边公差)compare?GageR&RStudy-XBar/RMethod%ContributionSourceVarComp(ofVarComp)TotalGageR&R0.000020757.30Repeatability0.00000154.06Reproducibility0.000019353.2

5、5Part-To-Part0.000015542.70TotalVariation0.0000362100.00Processtolerance=0.03Study Var%Study Var%ToleranceSourceStdDev(SD)(6 * SD)(%SV)(SV/Toler)TotalGageR&R0.00455370.027322275.7091.07=SD/((USL-LSL)/6)Repeatability0.00121160.007269520.1424.23Reproducibility0.00438960.026337372.9787.7

6、9Part-To-Part0.00393080.023584965.3478.62TotalVariation0.00601560.0360936100.00120.31NumberofDistinctCategories=1Explaination:SV%75.7%representthemeasurementsystemisnotcapabletodistinguishthepart%TolerancerepresentifthemeasurementsystemcanjudgepartwithinSPECornot.Note:HowtodoGR&Rwitht

7、olerance(单边公差)compare?Sameasabovebut%Tolerance=SD/((Xbar-LSL)/3)orSD/((USL-Xbar)/3)HowtodoGR&RwithouttolerancebyANOVA?GageR&Rfor测量值GageR&RStudy-ANOVAMethodTwo-WayANOVATableWithInteractionSourceDFSSMSFP零件号988.47459.83050477.0430.000测量人23.14641.5732176.3430.000零件号*测量人180.37090.020610.46

8、60.96