量測系統(tǒng)分析MSA教育訓(xùn)練

1、Reporter: Reporter: 郭淮平郭淮平MSA的定義PROCESS原料人機 法環(huán)測量測量測量測量結(jié)果好不好5M1E位置寬度位置寬度戴明說沒有真值存在一致(線性)真值真值真值觀測平均值偏倚偏倚偏倚：是測量結(jié)果的觀測平均值與基準值的差值。真值的取得可以通過採用更高級別的測量設(shè)備進行多次測量，取其平均值而定之。重覆性重覆性是由一個評價人，採用一種測量儀器，多次測量同一零件的同一特性時獲得的測量值變差。再現(xiàn)性是由不同的評價人，採用相同的測量儀器，測量同一零件的同一特性時測量平均值的變差。再現(xiàn)性穩(wěn)定性時間1時間2穩(wěn)定性(或飄移)，是測量系統(tǒng)在某持續(xù)時間內(nèi)測量同一基準或零件的單一特性時獲得的測

2、量值總變差。量程基準值觀測平均值基準值線性是在量具預(yù)期的工作範(fàn)圍內(nèi)，偏倚值的差值觀測平均值基準值無偏倚有偏倚一個數(shù)據(jù)分級n控制：只有下列條件才可用於控制n與規(guī)範(fàn)相比過程變差較小n預(yù)期過程變差上的損失函數(shù)很平緩n過程變差的主要原因?qū)е戮灯苙分析：n對過程參數(shù)及指數(shù)的估計不可接受。n只能表明過程是否正在生產(chǎn)合格零件。解析度24個數(shù)據(jù)分級解析度5個或更多個個數(shù)據(jù)分級n控制：只有下列條件才可用於控制n可用於計量控制圖n分析：n建議使用取樣的代表性不具代表性的取法具代表性的取法控制圖的判讀n超出控制界限的點：出現(xiàn)一個或多個點超出任何一個控制界限是該點處於失控狀態(tài)的主要證據(jù)UCLCLLCL異常異?？刂?/p>

3、圖的判讀n鏈：有下列現(xiàn)象之一即表明過程已改變n連續(xù)7點位於平均值的一側(cè)n連續(xù)7點上升(後點等於或大於前點)或下降。UCLCLLCL控制圖的判讀n明顯的非隨機圖形：應(yīng)依正態(tài)分佈來判定圖形，正常應(yīng)是有2/3的點落於中間1/3的區(qū)域。UCLCLLCL252015105049.549.048.548.0SubgroupMeans1X=48.483.0SL=49.16-3.0SL=47.801.00.50.0StDevsS=0.34833.0SL=0.8944-3.0SL=0.000Stability Analysis for viscosity%1 . 7)70. 0/05. 0(100%05. 08

4、0. 075. 075. 0105 . 710偏倚偏倚XX基準值0.800.75平均值5 . 715. 5Re45. 172. 1/5 . 2/4 . 65 . 2575. 25 . 210/2524ypeatabilitdRRDUCLReR01234567891001234567Sample NumberSample RangeR Chart for C1 - C3R=2.5UCL=6.436LCL=019. 015. 50 . 10 . 135)5 . 7()2 . 2(15. 515. 52 . 241. 16 . 015. 515. 5222*22ooonrdRilityreprodu

5、cibdRiltyreproducib%100%&)(15. 547. 1)19. 045. 1 (&)(22222222tmmptpppmeemRRdRdRRR零件間變差241. 16 . 78 .1241. 1&%7 .501009 .146 . 7100&100&%9 .1490. 215. 590. 2)47. 150. 2()(8 .1250. 215. 550. 248. 22 . 622222RRPVTVRRRRTVPVdRtmmptpp數(shù)據(jù)分級數(shù)012345678910212213214215216217218219220221Sampl

6、e NumberSample MeanX-bar Chart for C1 - C3111Mean=216.6UCL=219.2LCL=214.1組數(shù)樣本d2操作者A%5 .75)40. 0/303. 0(100&%40. 0303. 019. 1/07. 015. 5)(15. 5&07. 05/35. 052RRdRRGRRRi過程變差假定為Case Study操作者BCase Study操作者CGage name:Date of study:Reported by:Tolerance:Misc:d2000/12/01Look Tu0.30.40.50.60.70.80.9

7、1.01.1123Xbar Chart by OperatorSample MeanMean=0.8075UCL=0.8796LCL=0.73540.000.050.100.15123R Chart by OperatorSample RangeR=0.03833UCL=0.1252LCL=0Gage R&R StudyMETHOD RX Gage name:Date of study:Reported by:Tolerance:Misc:d2000/12/01Look Tu1230.40.50.60.70.80.91.01.1OperatorResponse by OperatorG

8、age R&R StudyMETHOD RX Gage name:Date of study:Reported by:Tolerance:Misc:d2000/12/01Look Tu 1 2 3 4 5 6 7 8 9100.40.50.60.70.80.91.01.1PartResponse by PartGage R&R StudyMETHOD RX Gage name:Date of study:Reported by:Tolerance:Misc:d2000/12/01Look Tu%Contribution Gage R&RRepeatReprodPart-

9、to-Part050100Components of VariationPercentGage R&R StudyMETHOD RX Gage name:Date of study:Reported by:Tolerance:Misc:12/01/2000lOOK TU00.30.40.50.60.70.80.91.01.1123Xbar Chart by OperatorSample MeanMean=0.8075UCL=0.8796LCL=0.735400.000.050.100.15123R Chart by OperatorSample RangeR=0.03833UCL=0.

10、1252LCL=0GAGE R&R STUDYANOVA METHODGage name:Date of study:Reported by:Tolerance:Misc:12/01/2000lOOK TU%Study Var Gage R&RRepeatReprodPart-to-Part050100Components of VariationPercentGAGE R&R STUDYANOVA METHODGage name:Date of study:Reported by:Tolerance:Misc:12/01/2000lOOK TU 1 2 3 4 5 6

11、 7 8 9100.40.50.60.70.80.91.01.1PartBy PartGAGE R&R STUDYANOVA METHODGage name:Date of study:Reported by:Tolerance:Misc:12/01/2000lOOK TU1230.40.50.60.70.80.91.01.1OperatorBy OperatorGAGE R&R STUDYANOVA METHODGage name:Date of study:Reported by:Tolerance:Misc:12/01/2000lOOK TU 1 2 3 4 5 6 7

12、8 9100.40.50.60.70.80.91.01.1PartOperatorOperator*Part InteractionAverage1 2 3 GAGE R&R STUDYANOVA METHOD截距=a=nxxnyxxy22)()(斜率=b=)(nxany擬合度=nyynxxnyxxyR222222)()(線性=斜率*過程變差%線性=100%線性過程變差公式Gage name:Date of study:Reported by:Tolerance:Misc:村夾d2000/12/01Look Tu202345678910-101Master Part Measureme

13、ntAccuracy AverageGage LinearityGage AccuracyLinearity:%Linearity:R-Squared:Bias:%Bias:1.8433313.167 0.978-5.3E-020.381LinearityAccuracy02468101214Percent of Process VariationPercentCase study for linearty analysis合格區(qū)(GO)不合格區(qū)(NO GO)A 評價人B 評價人12121GGGG2GGGG3NGGGG4NGNGNGNG5GGGG6GGGG7NGNGNGNG8NGNGGG9GG

14、GG10GGGG11GGGG12GGGG13GNGGG14GGGG15GGGG16GGGG17GGGG18GGGG19GGGG20GGGG975. 0set 20025. 0set 05 . 0, 5 . 00, 5 . 0,5 . 00, 5 . 0,5 . 0aaapapamaifamaifmaamaifmapfactor adjustmentan is 08. 108. 1)005. 0 ()975. 0 (ityRepeatabillimitLower )5 . 0 (aTaTaTPatXPatXPatXBiaszero. fromdifferet tlysignifican is b

15、ias the5,19)then 2.093(0.02an greater th is valuecalculated thisIf3 .31ityrepeatabilBiastY-AxisX-Axislow limithigh lomitbiasReapeatibilityXt a Pa-0.016000.025-0.015010.075-0.014030.175-0.013050.275-0.012080.425-0.0110160.775-0.0105180.875-0.0100200.975-0.0080201.000-0.008-0.009-0.010-0.011-0.012-0.0

16、13-0.014-0.015-0.0161.00.90.80.70.60.50.40.30.20.10.0XtPa-0.008-0.009-0.010-0.011-0.012-0.013-0.014-0.015-0.0161.00.50.0XtPaR-Sq = 0.925Y = 2.31411 + 148.192XRegression Plot能須加補正值或不適用所以明顯的偏離零，可86. 90073. 00023. 03 .313 .310073. 008. 1)0163. 0(0084. 00023. 0)010. 0(0123. 0RBiastRBiasXt a Pa-0.01800-0

17、.01501-0.01403-0.01305-0.01208-0.011014-0.010518-0.090020-0.007020試計算其偏差為多少？重復(fù)性為多少？試繪出其下規(guī)格之GPC圖以及常態(tài)機率紙之圖形？XYR80379. 054058. 480379. 054058. 4149947. 02斜率：截距：係數(shù)：觀察數(shù)：50607050607080C1C2C2 = -3.68519 + 1.06481 C1S = 1.37731 R-Sq = 96.8 % R-Sq(adj) = 96.4 %CORRELATION METHOD CASE STUDY量具1量具2理想的量具間關(guān)係R2=1Y

18、= a + Bxb=1a=0量具1量具2差的量具間關(guān)係R2=1Y= a + bxb=1a=4量具1量具2差的量具間關(guān)係R2=1Y= a + bxb=0.5a=0結(jié)束語結(jié)束語PROCESS原料測量結(jié)果針對產(chǎn)品所做的仍只是在做SQC針對過程的重要控制參數(shù)所做的才是SPC什么叫制程能力？aC製程能力指標2)()2/(dRTXCa雙邊規(guī)格制程準確度制程準確度反映制程中心與規(guī)格中心偏離的狀況。反映制程中心與規(guī)格中心偏離的狀況。Remark :：規(guī)格中心：規(guī)格中心 Usl(Su)規(guī)格上限規(guī)格上限 Lsl(Sl)規(guī)格下限規(guī)格下限 T：公差：公差Usl-Lsl當(dāng)當(dāng)Ca為負數(shù)時，表示準確度與為負數(shù)時，表示準確度與規(guī)格中心比較偏左規(guī)格中心比較偏左反之則偏右反之則偏右若若Ca=0時，表示與規(guī)格中心時，表示與規(guī)格中心相重合，此時準確度最佳相重合，此時準確度最佳但通常情況亦有在但通常情況亦有在Ca前加絕對前加絕對值，則代表不考慮偏移