SUNON Nan Hai PlantAttribute Measurement Systems計(jì)數(shù)型測(cè)量系統(tǒng)SUNON Nan Hai PlantAttribute Terminology 計(jì)數(shù)術(shù)語(yǔ)計(jì)數(shù)術(shù)語(yǔ)qAttribute Data:計(jì)數(shù)型數(shù)據(jù) ☆ Qualitative(go/no go) data that can be counted for recording and analysis 可用作記錄或分析的定性數(shù)據(jù)(通常為合格/不合格) qAttribute Measurement System(AMS):計(jì)數(shù)型測(cè)量系統(tǒng) ☆ A measurement system that compares a product to a standard and accepts the product if in meets the standard . 將每一產(chǎn)品與標(biāo)準(zhǔn)對(duì)比,如果符合標(biāo)準(zhǔn)的要求則接受 ☆ Can be inspected by an inspection or by using a go/no go gauge 可由檢驗(yàn)員或合格/不合格量規(guī)來實(shí)施檢查qScreen:篩選 ☆ 100% inspection using an AMS 用計(jì)數(shù)測(cè)量系統(tǒng)百分百評(píng)價(jià)產(chǎn)品SUNON Nan Hai Plant Attribute Terminology 計(jì)數(shù)術(shù)語(yǔ)計(jì)數(shù)術(shù)語(yǔ)q Screen Effectiveness:篩選效率 ☆ The ability of the AMS to discriminate good from bad AMS 區(qū)分合格與不合格產(chǎn)品的能力q Customer Bias : 客戶偏好 ☆ Screening criteria is too tight:Good product is being rejected 篩選標(biāo)準(zhǔn)太嚴(yán)格:合格產(chǎn)品被拒收q Producer Bias:生產(chǎn)者偏好 ☆ Screening criteria is too loose:Defective product is being accepted 篩選標(biāo)準(zhǔn)太寬鬆:不合格產(chǎn)品被接收SUNON Nan Hai PlantThe Purpose of Attribute R & R計(jì)數(shù)值計(jì)數(shù)值R & RR & R的目的的目的q To understand if workers across all shifts,machines and lines use the same criteria to determine “pass” or “fail” 確定各班次、各機(jī)器、各流水線的檢驗(yàn)員是否用同一標(biāo)準(zhǔn)區(qū)分 合格與不合格.q To quantify the ability of inspectors or gauges to repeat their inspection results and conclusions 量化測(cè)量者或測(cè)量?jī)x器是否能正確重復(fù)檢驗(yàn)結(jié)果的能力SUNON Nan Hai PlantThe Purpose of Attribute R & R計(jì)數(shù)值計(jì)數(shù)值R & RR & R的目的的目的qTo understand the level of conformance to a standard 確定檢驗(yàn)員/量?jī)x符合標(biāo)準(zhǔn)的程度,包括: ☆ The frequency where inspectors ship truly defective product (Producer Bias) 檢驗(yàn)員接受不合格產(chǎn)品的概率 ☆ The frequency where inspectors do not ship truly acceptable Product (Customer Bias) 檢驗(yàn)員拒收合格品產(chǎn)品的概率SUNON Nan Hai PlantThe Purpose of Attribute R & R計(jì)數(shù)值計(jì)數(shù)值R & RR & R的目的的目的qIdentify the following:識(shí)別以下各項(xiàng) ☆ Training need (Individual(s) or for all) 培訓(xùn)需求(個(gè)別或全部檢驗(yàn)員) ☆ The lack of documented procedures or control plans 缺少程序或控制計(jì)劃 ☆ Whether standards are clearly defined 標(biāo)準(zhǔn)沒有清晰定明 ☆ Adjustment or correlation of gauges 量?jī)x需要調(diào)整或進(jìn)行相關(guān)對(duì)比SUNON Nan Hai PlantPoints for Attribute Measurement Systems計(jì)數(shù)測(cè)量系統(tǒng)應(yīng)注意事項(xiàng)計(jì)數(shù)測(cè)量系統(tǒng)應(yīng)注意事項(xiàng)1.Attribute data is normally generated from screening of product 計(jì)數(shù)值通常在篩選產(chǎn)品中產(chǎn)生1.100% product screening is conducted when the process is incapable of meeting the required acceptable level 100%產(chǎn)品篩選通常是在過程不能以高比例生產(chǎn)合格產(chǎn)品的 時(shí),實(shí)施1.As a result,many borderline products(both good and defective) may occur 因此,將生產(chǎn)大量的邊界產(chǎn)品(合格或不合格產(chǎn)品)SUNON Nan Hai PlantPoints of Attention for Attribute Measurement Systems計(jì)數(shù)測(cè)量系統(tǒng)應(yīng)注意事項(xiàng)計(jì)數(shù)測(cè)量系統(tǒng)應(yīng)注意事項(xiàng)qVariation exists in any measurement system,inspection and operational process.This will lead to the acceptance of truly defective products or rejection of truly acceptable products. 很多測(cè)量系統(tǒng),檢驗(yàn)和運(yùn)作過程都存在變異,這導(dǎo)致大量合格產(chǎn)品的 拒收或大量不合格產(chǎn)品的接受As a result,we should Focus on improving theProcess capability and Not on improving the Screening systems因此我們應(yīng)該將重點(diǎn)放在改進(jìn)系統(tǒng)能力而非完善篩選系統(tǒng) SUNON Nan Hai PlantThe Methods for Conducting Attribute R & R計(jì)數(shù)計(jì)數(shù) R & R方法方法1)Select a minimum of 30 products from the process 從過程中選取至少30件產(chǎn)品 There will be products in the study where they are 在我們選出做分析的產(chǎn)品中應(yīng)包括下列產(chǎn)品: ─ Defective 不良品 ─ Defect free 無缺陷產(chǎn)品 ─ Marginal cases 邊緣產(chǎn)品SUNON Nan Hai PlantThe Methods for Conducting Attribute R & R計(jì)數(shù)計(jì)數(shù) R & R方法方法2) Select the inspectors (who should be qualified and experienced) and the gauges 挑選檢驗(yàn)員和量?jī)x.檢驗(yàn)員應(yīng)具有經(jīng)驗(yàn)和資格3) Let the inspectors,independently and in random order,inspect the products and determine whether they pass or fail. Repeat this process 讓每位檢驗(yàn)員獨(dú)立以隨機(jī)的次序檢驗(yàn)這些產(chǎn)品並確定合格與否, 重復(fù).SUNON Nan Hai PlantThe Methods for Conducting Attribute R & R計(jì)數(shù)計(jì)數(shù) R & R方法方法4) Enter the data into the Attribute R & R.Excel spreadsheet or Minitab to calculate the effectiveness of the AMS 將數(shù)據(jù)輸入至Attribute R & R. Excels工作表或Minitab 報(bào)告MSA的檔案5) Record the results and review the process. 記錄結(jié)果.如果要采取恰當(dāng)?shù)拇胧┬拚龣z驗(yàn)過程6) Prepare the study to verify the action taken. 重新進(jìn)行分析,以驗(yàn)證修正措施SUNON Nan Hai PlantAttribute R & R-Worksheet計(jì)算計(jì)算R&R-方法方法1利用利用Excel表表 Appraiser Score=檢查員自身一致次數(shù)／總次數(shù)Score vs.Attribute=檢查員檢測(cè)結(jié)果與已知標(biāo)準(zhǔn)相符的次數(shù)／總次數(shù)Screen Effective score=所有檢查員有一致性的次數(shù)／總數(shù)次Screen Effective Score VS. Attribute=所有檢查員與標(biāo)準(zhǔn)相一致次數(shù)／總次數(shù)SUNON Nan Hai PlantDefinition of Terminology for Attribute R & RExcel Spreadsheet 例題解析例題解析q％ Appraiser Score in the consistency within one person. 檢驗(yàn)員的評(píng)分(% Appraiser Score)評(píng)價(jià)的是個(gè)人的一致性 （重復(fù)性）q％ score vs. Attribute is a measure of how well the operator’s evaluation agrees with that of the “expert”. 檢驗(yàn)員評(píng)分比較標(biāo)準(zhǔn)(%Score vs. Attribute)評(píng)價(jià)的是檢驗(yàn)員和“專家”評(píng)價(jià)相符的程度qScreen % Effective Score is a measure of how well 　the inspectors agree with each other. 檢驗(yàn)員之間的有效評(píng)分(Screen % Appraiser Score)　評(píng)價(jià)的是檢驗(yàn)員之間的一致性（再現(xiàn)性）qScreen % Effective Score VS. Attribute in an overall measure of consistency between inspectors and agreement with “expert”. 檢驗(yàn)員之間有效評(píng)分再比較標(biāo)準(zhǔn)(Screen % Effective Score vs. Attribute)綜合評(píng)價(jià)全部檢驗(yàn)員和專家的一致性 越接近100%越好SUNON Nan Hai PlantGuidelines for Selecting MSA Samples MSA樣本指南樣本指南qUsually about 30 samples,2-4inspectors (if several inspectors use the gauge),2-3 trials 通常要大概30個(gè)樣本，2-4個(gè)檢驗(yàn)員(如果多個(gè)檢驗(yàn)員使用量?jī)x),2-3次檢驗(yàn)qDepending on the purpose of the study 1 or more gauges will be used 根據(jù)研究的目的，可用１個(gè)或多個(gè)量?jī)x　qSelect enough samples such that number of samples x number of inspectors/gages＞15 一般來說，選擇足夠的樣本使樣本數(shù)目ｘ檢驗(yàn)員數(shù)目／量?jī)x數(shù)目＞15SAMPLE SELECTION 樣本選擇　　Option 1: if process variability is unknown,the samples selected should cover the full range of the normal process/product variation (go get TV) 選擇1:如果過程變異未知，樣本應(yīng)包含正常過程/產(chǎn)品變異的全部範(fàn)圍 　(以獲得TV) Option 2:if process variability is Known,the samples selected should uniformly span beyond the width of the specifications. 選擇2:如果過程變異已知，樣本應(yīng)在規(guī)格範(fàn)圍內(nèi)平均分布SUNON Nan Hai PlantAttribute R & R-Using Minitab 計(jì)量計(jì)量R&R-方法方法2利用利用Minitab打開：“Attribute MSA.mtw”SUNON Nan Hai PlantAttribute R & R-Using Minitab 計(jì)量計(jì)量R&R-方法方法2利用利用Minitab填寫完填寫完后后,點(diǎn)點(diǎn)“ok”喔喔!SUNON Nan Hai PlantAttribute R & R-Using Minitab 計(jì)量計(jì)量R&R-方法方法2利用利用MinitabSUNON Nan Hai PlantAttribute R & R-Using Minitab 計(jì)量計(jì)量R&R-方法方法2利用利用MinitabWithin Appraisers Within Appraisers Assessment AgreementAppraiser # Inspected # Matched Percent 95 % CI1 14 14 100.00 (80.74, 100.00)2 14 11 78.57 (49.20, 95.34)3 14 14 100.00 (80.74, 100.00)# Matched: Appraiser agrees with him/herself across trials.Each Appraiser vs. Standard Each Appraiser vs. Standard Assessment AgreementAppraiser # Inspected # Matched Percent 95 % CI1 14 11 78.57 (49.20, 95.34)2 14 9 64.29 (35.14, 87.24)3 14 10 71.43 (41.90, 91.61)# Matched: Appraiser's assessment across trials agrees with theSUNON Nan Hai PlantAttribute R & R-Using Minitab 計(jì)量計(jì)量R&R-方法方法2利用利用MinitabAssessment DisagreementAppraiser # pass / fail Percent # fail / pass Percent # Mixed Percent1 2 28.57 1 14.29 0 0.002 1 14.29 1 14.29 3 21.433 1 14.29 3 42.86 0 0.00# pass / fail: Assessments across trials = pass / standard = fail.# fail / pass: Assessments across trials = fail / standard = pass.# Mixed: Assessments across trials are not identical.Between Appraisers Between Appraisers Assessment Agreement# Inspected # Matched Percent 95 % CI 14 8 57.14 (28.86, 82.34)# Matched: All appraisers' assessments agree with each other.All AppraisersAll Appraisers vs vs Standard Standard Assessment Agreement# Inspected # Matched Percent 95 % CI 14 6 42.86 (17.66, 71.14)Lower bound must be≧80%SUNON Nan Hai PlantSUNON Nan Hai PlantSUNON Nan Hai Plant。