顆鉆石質(zhì)量問(wèn)題解決流程

17DiamondProcess

七顆鉆石流程Revised:8Aug200813254672Whatisthe7DiamondProcess?

七顆鉆石的流程是什么？The7DiamondProcessisoneofmanytoolsthatcanbeusedintheproblemsolvingprocess.七顆鉆石流程是可以用來(lái)解決質(zhì)量問(wèn)題的工具之一。Thistoolisusedtoinvestigatediscrepanciesdiscoveredbythefollowing:它可以用來(lái)調(diào)查以下方面發(fā)現(xiàn)的差異

GlobalCustomerAudit(GCA)全球客戶評(píng)審ShippingPriorityAudits(SPA)發(fā)運(yùn)優(yōu)先級(jí)評(píng)審VerificationStations檢驗(yàn)工位Other(Warranty,JDPower)其它(售后索賠、JDP)3

Purposeofthe7DiamondProcess

7顆鉆石流程的目的

The7DiamondProcess

isastructuredwayofassessingourmanufacturingprocesstodeterminewhetherofnotithasfailedtomeetthequalitystandarddemandedbyourcustomers.7顆鉆石流程是一個(gè)構(gòu)建好的評(píng)價(jià)我們的制造流程是否滿足了顧客所要求的質(zhì)量標(biāo)準(zhǔn)的一個(gè)方法

47Diamond

Process流程Responsibility責(zé)任Production第一步

¨1Production第二步¨2Production第三步¨3Rel.Engineer/SQA/Supplier負(fù)責(zé)的SQDE工程師/供應(yīng)商

¨4CorrectProcess?正確的工藝CorrectTool?正確的工具CorrectPart?正確的零件PartsQuality?零件質(zhì)量Responsibility責(zé)任ProcessControlManagers工藝控制負(fù)責(zé)人¨5aIsEngineeringsupportrequired?是否需要工程方面的支持ProblemIdentifiedBeginInterrogation問(wèn)題定義(開(kāi)始調(diào)查)Responsibility責(zé)任QETPST(Lead)¨5bSMTRGM(Lead)¨6StatisticalEngineering(RedXStrategies)統(tǒng)計(jì)工程(紅-X方法)¨7WillProcessChangeResolve?工藝更改能解決問(wèn)題嗎ProductChangeRequired?產(chǎn)品更改需要嗎？HardyPerennialorExtremelyComplexProblem非常復(fù)雜的問(wèn)題SQA -SupplierQualityAssuranceQET -QualityEngineeringTeamPST -PlantSupportTeamSMT -SystemsManagementTeamRGM-ReliabilityGrowthManagement5ReviewofResponsibility

職責(zé)回顧

Diamonds1-4 Production&Reliability鉆石1-4生產(chǎn)&可靠性

Filter5a ProcessControlManager(PCM)5a過(guò)濾工藝控制負(fù)責(zé)人

Diamond5b-7 ProductEngineering鉆石5b-7產(chǎn)品工程77DiamondProcessStages

流程的各步驟Stages1&2oftheprocessareusedtodetermineiftheProductionorganizationisrunningtheassemblyprocesstodesignintent.1、2步是用來(lái)確定生產(chǎn)部門(mén)運(yùn)行的裝配流程滿足設(shè)計(jì)內(nèi)容。

Theinitialinvestigation(Stage1)isdonewherethedefectwasidentified.最初的調(diào)查(第一步)應(yīng)在發(fā)現(xiàn)缺陷的地方開(kāi)始Stage2isonlyusedwhentheinvestigationinStage1determinedthatthecauseoftheproblemwasfromanupstreamsource.第2步只能當(dāng)?shù)谝徊降恼{(diào)查,確定問(wèn)題是來(lái)源其他方面時(shí),才可開(kāi)始Iftheprocessisn’tbeingmanagedtodesignintent,thenitmustbecorrectedandvalidated,priortoaskingforEngineeringassistance.如果工藝沒(méi)有滿足設(shè)計(jì)內(nèi)容，當(dāng)需要工程方面的協(xié)助前，必須先進(jìn)行糾正并要有效。Engineeringreferral(Stage3)occurswhenthemanufacturingprocessdoesmeetdesignintentandtheproblemstillexists.當(dāng)制造過(guò)程滿足設(shè)計(jì)內(nèi)容并且問(wèn)題依然存在時(shí)，第3步開(kāi)始。8¨1-CorrectProcess是否遵循正確的工藝以下這些方面是否是導(dǎo)致問(wèn)題產(chǎn)生的原因？Cananyofthesecausetheproblem?Stages1&2ProductionCorrects正確的生產(chǎn)Production¨2Production¨3Rel.Engineer/SQA/Supplier

¨4CorrectProcess?正確的工藝過(guò)程CorrectTool?正確的工具CorrectPart?正確的零件PartsQuality?零件的質(zhì)量是否有正確的操作指導(dǎo)文件？ArethecorrectBestPeoplePracticesheets/JES(IOS)posted?目前產(chǎn)品的標(biāo)準(zhǔn)是否有效？AretheuptodateProductQualityStandardsavailable?是否所有的操作者都按照操作指導(dǎo)執(zhí)行？各班次？Aretheoperators'jobinstructionsbeingfollowed?AllShifts?目前是否有目視化的輔助措施？是否被執(zhí)行？Aretherevisualaidspresent,currentandbeingfollowed?是否有強(qiáng)制的操作順序，是否執(zhí)行了？Ifthereisamandatorysequenceidentified,Isitbeingfollowed?操作者是否正確培訓(xùn)過(guò)？是否為固定操作工？Wastheoperatorproperlytrainedonthisoperation?Isittheregularoperator?是否有有效的過(guò)程控制計(jì)劃？是否被執(zhí)行？AreProcessControlPlansavailableandbeingfollowed?操作者能否發(fā)現(xiàn)其所在崗位發(fā)生的問(wèn)題，是否知道標(biāo)準(zhǔn)？Cantheoperatordetecttheissue/problem?Dotheyknowthestandards?操作者是否知道當(dāng)他/她的崗位出現(xiàn)質(zhì)量問(wèn)題時(shí)如何傳遞溝通信息？DoesOperatorknowhowtocommunicateissues/problems?9Stages1&2ProductionCorrectsProduction¨1Production¨3Rel.Engineer/SQA/Supplier

¨4CorrectProcess?正確的工藝過(guò)程CorrectTool?正確的工具CorrectPart?正確的零件PartsQuality?零件質(zhì)量2-CorrectTool是否使用了正確的工具是否使用了正確的工具和夾具？各班次？Arethecorrecttools/fixturesbeingused?Allshifts?

工具是否設(shè)置成規(guī)定的扭矩？Arethetoolssettothespecifiedtorque?是否進(jìn)行正確的校準(zhǔn)？最近一次校準(zhǔn)日期__________Arethetoolsproperlycalibrated?Lastcalibrationdate__________是否鉆頭或套筒已磨損或未在正確工況下使用？Areanybitsorsocketswornornotinproperworkingcondition?是否在工具上有備用的空氣管？Hasanextraairhosebeenattachedtothetool?工具導(dǎo)軌，控制盒，調(diào)節(jié)線是否正確？Arethetoolsrails,controllers,flowregulatorlinescorrect?工具是否與暗燈相連？IsthetooltiedtotheANDONSystemproperly?工位是否有防錯(cuò)設(shè)施，是否正常工作？是否被旁路？IfErrorproofingispresent,isitworkingcorrectly?Isitinbypass?工位的布置是否有利于操作者的工作？DoestheworkplacelayoutallowtheOperatortoworkefficiently?是否進(jìn)行了預(yù)防性維護(hù)(檢查表)？Hastherequiredpreventativemaintenancebeenperformed?(checklog)設(shè)備/工具是否工作正常？Istheequipment/toolworkingproperly?以下這些方面是否是導(dǎo)致問(wèn)題產(chǎn)生的原因？Cananyofthesecausetheproblem?10Stages1&2Production¨1Rel.Engineer/SQA/Supplier

¨4CorrectProcess?正確的工藝過(guò)程ProductionCorrectsCorrectPart?正確的零件Production¨2CorrectTool?正確的工具PartsQuality?零件質(zhì)量3-CorrectPart是否使用了正確的零件零件號(hào)是否與工程單匹配？DothePartnumbersmatchtheEngineeringsheets?是否使用了正確的零件號(hào)？Arethecorrectpartnumbersbeingused?是否在料架上標(biāo)識(shí)有正確的零件號(hào)？Arethecorrectpartnumbersidentifiedonthematerialracks?在料架上擺放位置是否正確？Arethecorrectpartsinthecorrectlocationsonthematerialracks?包裝盒上零件號(hào)與盒內(nèi)零件是否一致？Dothepartnumbersontheboxesagreewiththepartsintheboxes?是否有TWO釋放？是否有效？IfaTemporaryWorkOrderhasbeenissued,Isitstillineffect?零件選裝是否和要求一致？Canthepartsbeselectedcorrectlyonaconsistentbasis?以下這些方面是否是導(dǎo)致問(wèn)題產(chǎn)生的原因？Cananyofthesecausetheproblem?11Stages1&2Production¨1CorrectProcess?正確的工藝流程Rel.Engineer/SQA/SupplierPartsQuality?零件質(zhì)量Production¨2CorrectTool?正確的工具CorrectPart?正確的零件Production¨34-PartQuality零件質(zhì)量當(dāng)BOB和WOW互換時(shí)，問(wèn)題是否跟著零件走？

ProblemfollowspartwhenswappedbetweenBestofBest/WorstofWorstvehicles?目前的圖紙/數(shù)模是否有效？Isthecurrentblueprint/mathdataavailable?零件是否符合標(biāo)準(zhǔn)？Dothepartsmeetspecification?是否發(fā)出PRR并告知供應(yīng)商？PRR號(hào)_______HasaProblemReport&Resolutionbeenissuedandsuppliercontacted?PRR_______零件符合標(biāo)準(zhǔn)是否還會(huì)導(dǎo)致問(wèn)題發(fā)生？

Arethepartswithinspecificationandstillcausingtheproblem?

12Diamonds1-4inReview鉆石1-4步回顧Diamonds1-4areforevaluatingthestabilityoftheprocess&Parts.1-4步用來(lái)評(píng)價(jià)工藝過(guò)程和零件的穩(wěn)定性O(shè)nceaproblemhasbeenidentified,theautomaticresponsemustbetoimmediatelystepthrudiamonds1-4.當(dāng)問(wèn)題被定義后，1-4步的負(fù)責(zé)人員就自動(dòng)確定下來(lái)Itmustbecomeinherentinourproblemsolvingthoughtprocess.這些步驟是問(wèn)題解決過(guò)程中固定的流程Responsibility職責(zé)ProcessControlManagers過(guò)程控制負(fù)責(zé)人¨5aIsEngineeringsupportrequired?是否需要工程的支持13¨5a-EngineeringFilter5a-工程過(guò)濾IsEngineeringsupportrequired?需要工程方面的支持嗎5aisasteptofilteroutandresolveless-complexissuesbeforeseekinghelpfromQualityEngineering.5a是一步過(guò)濾出并將不復(fù)雜的問(wèn)題在尋求工程部門(mén)幫助前解決TheProcessControlManagerisresponsibleforconductinginitialstudiespriortoescalatingtheissue.過(guò)程控制負(fù)責(zé)人負(fù)責(zé)在提升問(wèn)題前指導(dǎo)初始研究Thesestudiesmayincludebutarenotlimitedto:這些研究應(yīng)包括但不局限在:ProblemDefinitionTree問(wèn)題定義樹(shù) 5Whys5個(gè)為什么

StatisticalProcessControl統(tǒng)計(jì)過(guò)程控制

DesignofExperiment(DOE)試驗(yàn)設(shè)計(jì)ShaininTechniques(quick&dirty)技術(shù)(快速&臟)

Ifaftertheinitialstudiesthecauseofvariationhasnotbeendetermined,theissueisreferredtoProductEngineering.TheproblemdefinitiontreeistheminimumexitcriteriatogofromDiamond5ato5b.

如果經(jīng)過(guò)初始研究，變差的產(chǎn)生原因還沒(méi)有確定，就需要產(chǎn)品工程的支持。問(wèn)題定義樹(shù)是從5a-5b的基本方法。QualityEngineering質(zhì)量工程5aProblemSolvingToolbox問(wèn)題解決工具箱14ProductEngineering產(chǎn)品工程SQA -SupplierQualityAssuranceQET -QualityEngineeringTeamPST -PlantSupportTeamSMT -SystemsManagementTeamRGM-ReliabilityGrowthManagementLineBalanceMandatorySequenceStage3EngineeringChangeResponsibilityQETPST(Lead)¨5bSMTRGM(Lead)¨6StatisticalEngineering(RedXStrategies)¨7WillProcessChangeResolve?ProductChangeRequired?HardyPerennialorExtremelyComplexProblemQualityEngineering5a產(chǎn)品工程強(qiáng)制的順序工程更改第三階段職責(zé)統(tǒng)計(jì)工程(紅X策略)質(zhì)量工程SQA-供應(yīng)商質(zhì)量保證QET-質(zhì)量工程小組PST-工廠支持小組SMT-系統(tǒng)管理小組RGM-可靠性增長(zhǎng)小組工藝更改會(huì)解決嗎？需要產(chǎn)品更改嗎艱難長(zhǎng)期或者及其復(fù)雜的問(wèn)題Examplefor5whyandRedX1.Whydidtherobotstop?為什么機(jī)器人停工了？

Afuseintherobothasblown.機(jī)器人的保險(xiǎn)絲燒斷了。2.Whyisthefuseblown?為什么保險(xiǎn)絲被燒斷了？

Circuitsoverloaded.線路過(guò)載。3.Whydidthecircuitoverload?為什么線路會(huì)過(guò)載？

Thebearingshavedamagedoneanotherandlockedup.

軸承間相互壞損且卡住了。

4.Whyhavethebearingsdamagedonanother?為什么會(huì)出現(xiàn)軸承間相互壞損？

Therewasinsufficientlubricationinthebearings.

軸承未得到適度潤(rùn)滑。5Whys-Example5個(gè)為什么-范例5Whys-Example5個(gè)為什么-范例5.Whywasthereinsufficientlubricationinthebearings?

為什么軸承未得到適度潤(rùn)滑？

Theoilpumpontherobotisnotcirculatingsufficientoil.

機(jī)器人的油泵未輸送足夠的潤(rùn)滑油。6.Whyisthepumpnotcirculatingsufficientoil?

為什么油泵未輸送足夠的潤(rùn)滑油？

Pumpintakeiscloggedwithmetalshavings.

油泵的進(jìn)油口被金屬屑堵塞了。7.Whyistheintakecloggedwithmetalshavings?

為什么油泵的進(jìn)油口被金屬屑堵塞？

Nofilteronthepumpintake.

油泵的進(jìn)油口未安裝過(guò)濾器。Projecttitle:PooradjustmentofRRdoorpanel805-830Leader:PedroArandaAlfaroSponsor:JuanCarlosLiceaArea:VAETCoach:LeonardoChávezsalcedoInitialdate:oct-04-2002Finaldate:oct-29-2002Problemdescription:ThismonthitwasreportedbytheshippinglotinUSAaproblemofqualityexistedinthe805/830vehicles.TheproblemisthepooradjustmentinRRdoorpanel.Projectsstatement:FindandimprovetheRedXthatproducethepooradjustmentintheRRdoorpanelforthemodel805/830inSilaoAssemblyplant.Strategy:Weinitiatedthisprojectusingthemodeltomodelstrategy,becausetherewasagoodcontrastandgoodleveragebasedonmulti-variseepag6.Measurementsystem:AsmeasurementsystemaForcegagewasused.ThismeasurementsystempassedtheisoplotwithDR=13.6,DM=1.0lbs,andDP=13.6lbs(seepage4)Cluegeneration:Stage1showsthattheRedXdoesn’tliveintheprocess.Thestage2showsthattheRedXlivesinthedoorpanel.Thepaircomparisonshowsthatthedoormoldingisthepartwiththebestcontrast.Statisticalconfirmation:OncewedetectedtheRedXcandidate,IdecidedtodoaBvsCsixpacktrial,inordertoconfirmthedoormoldingistheinfluencetomakethecustomersatisfaction.Thesixpackpassedwith95%ofconfidenceandendcountof6.Irreversiblecorrectiveaction:Tomodifiedtheflange1.5mminlengthtokeepabetterpositionandavoidthatthedoorpaneltakeoutofposition.Improvements:Reducewarrantycosttorepairthedoorpanelcausedbypoorfit(loose)andeliminatetheconditionin100%invehicles805/830models.Theamountofmoneyfromjul01tojul02was11,084.77USD.Lessonslearned:Welearnedthatisnecessarylookingotheralternativesusingotherstrategywhenisnotpossibleinvestmoneybutalwaysfocustoguaranteethecustomerenthusiasm,thereforethisprojectisanexampleofthis.ExecutiveSummary執(zhí)行總結(jié)項(xiàng)目題目：右后門(mén)板調(diào)整不好(805/830車型)。領(lǐng)導(dǎo)； PedroAdrandaAlfaro發(fā)起人：JuanCarlosLicea區(qū)域：VAET教練：LeonardoChavezsalcedo起使日：2002年10月4日截止日：2002年10月29日問(wèn)題描述：本月收到報(bào)告，在美國(guó)有關(guān)于門(mén)飾板的質(zhì)量問(wèn)題，右后門(mén)飾板調(diào)整不好。(805/830型)項(xiàng)目綜述：針對(duì)Lilao裝配廠805/830車型的右后門(mén)飾板，發(fā)現(xiàn)并解決其配合不好的問(wèn)題。策略：我們起初應(yīng)用車型對(duì)車型策略，因?yàn)槎嘬囍g有很好的對(duì)比度和平衡關(guān)系。(見(jiàn)見(jiàn)第6頁(yè))測(cè)量系統(tǒng)：用測(cè)力計(jì)作為測(cè)量系統(tǒng)。這種測(cè)量系統(tǒng)通過(guò)等量圖。(DR=13.6,M=1.0lbs,P=13.6lbs見(jiàn)第4頁(yè)

線索產(chǎn)生：階段1表明紅X不在過(guò)程中。階段2表明紅X產(chǎn)生在門(mén)飾板處。成對(duì)比較表明門(mén)型是成對(duì)比較點(diǎn)。統(tǒng)計(jì)確認(rèn)：一旦我們查到了候選的紅X，我們決定做BvsC六組數(shù)據(jù)比較，這是為了確認(rèn)門(mén)型影響客戶滿意度。用6對(duì)數(shù)據(jù)進(jìn)行比較具有95%的可信度和最大累加值為6.不可撤銷的糾正措施：為使門(mén)邊緣加長(zhǎng)1.5mm以保證正確的位置不偏離。改進(jìn)措施：減少保修費(fèi)用來(lái)修復(fù)由于配合不好產(chǎn)生的門(mén)飾板問(wèn)題，并且100%消除803/805車型的缺陷。學(xué)到的經(jīng)驗(yàn)：我們學(xué)到了當(dāng)投資不會(huì)太多的情況下，用其它策略以尋求可選擇的方法解決問(wèn)題。但始終要關(guān)注顧客熱忱。此項(xiàng)目便是一個(gè)這樣的例子。ProjectDefinitionTree/項(xiàng)目定義樹(shù)Problemcharacterization問(wèn)題描述Warrantycondition/保修條件Theproblemispresentedonlyinthereardoor問(wèn)題只是在后側(cè)車門(mén)出現(xiàn)BASED:DISTRIBUTONLOTCAMPAINGCURRENT:100%doorpanel805830modelsloose目前狀態(tài)：805/830型車門(mén)飾板100%松動(dòng)。GOAL:eliminate100%thepoorfit.目標(biāo)：100%消除不良的配合Projectstatement項(xiàng)目綜述Needenergytoreleasethetrimdoorpanel需要用力才能卸下門(mén)飾板Customeriscallingtheprobleminbothsides客戶現(xiàn)在對(duì)兩側(cè)都在抱怨Efforttorelease(lbs)/釋放力(磅)Frequency頻率CURRENT現(xiàn)有DESIRED希望Solutiontree項(xiàng)目解決樹(shù)TARGET:Eliminatecondition100%目標(biāo)：100%消除現(xiàn)有問(wèn)題PASSEDISOPLOTDR=15.2SEEPAG4通過(guò)等量圖驗(yàn)證DR=15.2參見(jiàn)第4頁(yè)P(yáng)ASSEDSTAGE1SOTHEREDXDOESN’TLIVEINTHEPROCESSSEEPAG#7.通過(guò)第一階段驗(yàn)證，因此紅X不在裝配過(guò)程中，參見(jiàn)第7頁(yè)。

THECOMPONENTSEARCHSTAGE2SHOWSTHATTHEREDXDOESNOTLIVEINTHETRIMDOORPANELSOLIVESINTHERESTOFTHEDOORPANEL.SEEPAG#7./零部件分析階段2顯示紅X不是由車門(mén)內(nèi)飾板造成的,所以應(yīng)是由車門(mén)板的其余部分引起的,見(jiàn)7頁(yè).PAIRCOMPARISONSHOWSTHATTHEDOORPANELMOLDINGHASTHECHARACTERISTICTHATPRODUCETHEDIFFERENCESEEPAG9/配對(duì)對(duì)比顯示車門(mén)飾板飾件有造成差異的特征，參見(jiàn)第9頁(yè)THISISTHEBESTSTRATEGYBASEDONMULTIVARISEEPAG5.這是基于多重變換比較得出的最佳策略，參見(jiàn)第5頁(yè)。PASSEDBvsCWHEREITSHOWSTHATTHEDOORMOLDINGKEEPINPOSITIONTHEDOORPANELSEEPAG10,BUTWECHOICEOTHERCHARACTERISTICTHATKEEPINPOSITIONTHEDOORPANELANDWITOUTINVESTMONEYSEEPAG11&13.通過(guò)BC對(duì)比試驗(yàn)，顯示車門(mén)飾板飾件能夠使車門(mén)飾板保持正確位置，見(jiàn)第10頁(yè)。但是我們選擇能夠保證車門(mén)飾板位置并且不用增加投資的其它特性，參見(jiàn)第11和13頁(yè)。Frequency頻率GREENYRUNCHARTSEEPAG17/綠Y字流程圖參見(jiàn)第17頁(yè)。DESIRED希望CURRENT現(xiàn)有BASED:DISTRIBUTONLOTCAMPAINGEfforttorelease(lbs)釋放力(磅)DM=1.0lbsDP=13.6lbsDR=13.6PassedIsoplotIsoplotAForcegagewasusedasthemeasurementsystem拉力計(jì)作為測(cè)量工具通過(guò)ISOPLOT評(píng)估POINTTOPOINTTherearenocontrastinthisstrategytherearenodifference.Thereisagoodcontrastbuttheleverageisnotenoughbecausewedon’thavetoolstomeasureit.Thisstrategyprovidegoodcontrastandthebestleveragebasedonmulti-varichartseepag6TherearenocontrastthroughthetimeStrategydiagramPLANTTOPLANTMODELTOMODELTRUCKTOTRUCKSIDETOSIDESAMEPANELSAMEPLANTSAMEMODELSAMETRUCKThereisacontrastbetweentrucktotruckandgoodleveragebutthecontrastisnotenoughbasedonmulti-variseepage6.EVENTTOEVENTSAMEPOINTTherearenocontrastinthisstrategytherearenodifferenceeventtoevent.策略圖事件對(duì)事件同一個(gè)點(diǎn)點(diǎn)對(duì)點(diǎn)同一塊扳同一側(cè)對(duì)同一側(cè)同一臺(tái)車車對(duì)車同一型號(hào)型號(hào)對(duì)型號(hào)同一個(gè)工廠工廠對(duì)工廠在這個(gè)對(duì)比中,無(wú)差異.在這個(gè)對(duì)比中,無(wú)差異.在這個(gè)對(duì)比中,有差異.但無(wú)測(cè)量工具.在車與車的對(duì)比中,有差異.但不能滿足MULTI-VARI的要求..在這個(gè)對(duì)比中,有差異.且能滿足MULTI-VARI的要求..在這個(gè)對(duì)比中,無(wú)差異.Multi-variNOTE:Thisgraphicshowsthatthebestcontrastismodeltomodel.SideTruck12345678910111213141516171819202122232425262728293031EFFORTTOTAKEOFF(lbs)RLRLRLRLRLRLRLRLRLRLRLRLRLRLRLRLRLRLRLRLRLRLRLRLRLRLRLRLRLRLRLCustomersatisfactionlimitBOBWOWModelCCCCAAAAAAAAAAASSSSSSSSSSSSSSSSNOTE:

S:SUBURBAN830MODEL

A:AVALANCHE805MODEL

C:CADILLAC806MODEL注:S\A\C三種車型最好最壞顧客的滿意底線注:此圖顯示出在型號(hào)與型號(hào)的對(duì)比中有最大的差異.松脫力(磅)ComponentsearchNOTE:ThisgraphicshowsthattheRedXsuspectdoesnotliveintheprocessbecauseitpassedthestage#1.Thestage2showsthattheRedXsuspectdoesnotliveinthesealwindow.SotheRedXsuspectlivesinthemoldingdoorpanel.Effort(lbs)BOBWOWSTAGE1STAGE2第一階段第二階段最好最壞原狀態(tài)第一次拆裝第二次拆裝第三次拆裝門(mén)窗密封條門(mén)飾板門(mén)飾板飾條鉸鏈注:這個(gè)圖顯示因?yàn)橥ㄟ^(guò)了第一階段的試驗(yàn),所以REDX不是由操作造成.第二階段的試驗(yàn)顯示門(mén)窗密封條不是REDX,門(mén)飾板飾條是REDX要素查找規(guī)則Rule1.TherearecompleteseparationbetweentheBOBandWOWvalues.將最好和最壞的值完全分開(kāi)規(guī)則Rule2.DY>V1R設(shè)Where:R=RBOB+RWOW

2 那么thenRBOB=1.9RWOW=1.2R=1.9+1.2=3.1=1.55.22DY=YBOB-YWOW=46.8-8.1=38.7如果ifDY>V1R那么then

38.7>(0.89)(1.55)所以so

38.7>1.38

所以滿足規(guī)則1和規(guī)則2的要求sopassedRule1andRule2通過(guò)問(wèn)題為每個(gè)單元設(shè)定判定極限Setdecisionlimitsforeachunitbyusingthequestions:DLBOB=YBOB+V2RDLWOW=YWOW+V2R那么Thenudl=48.83DLBOB=46.8+1.31(1.55)=ldl=44.77udl=10.13DLWOW=8.1+1.31(1.55)=ldl=6.07

結(jié)果Results~~~~~~~PairedComparison備注NOTE:WeconsiderthatthedoorpanelmoldingistheRedXcandidateinthepaircomparisonbecauseistheonlydifferencebetweenpaneltopanel.In805/830vs806models.我們認(rèn)為門(mén)板裝飾件是可能的RedX,因?yàn)樵谲囆?05/830和車型806對(duì)比后只有門(mén)板有差異。WOWBOBDOORMOLDINGREDXCANDIDATEPassedBvsCwith95%ofconfidencethatthemoldingdoorpanelistheRedXwithcompleteseparationandendcountof6.在完全分離，Endcount為5的情況下，以95%的置信度通過(guò)BvS表明門(mén)板裝飾件是RedXBvsCSixpackB=有門(mén)飾件的車Vehicleswithdoormolding.C=

沒(méi)有飾件的車Vehicleswithoutdoormolding.Req:置信度confidence=95%OnceconfirmedthattheREDXislivinginthedoorpanelmolding,wedecidedtochangeourstrategyfrom“modeltomodel”to“trucktotruck”becausethedoorpanelmoldingisuniqueforCadillacmodels.Inotherwords,findonecharacteristicinthesamedoorpanel805/830modelthatmakesthedifference,becausetherearesomedoorpanelsthatrequirealmost20lbstopulledoutofitpos