SPC基本概念介绍.ppt

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1、SPCConceptsFundamentalSPCConceptShewhartControlChartIntroductionAverageandRangeControlChartAverageandMovingRangeControlChartWesternRulesCp/CpkIntroductionRealAppliedContentsQualityManagementProgressSPCSTATISTICALPROCESSCONTROLAstructuredmathematicalm

2、ethodofanalyzingdataornumbersAsetofconditionsorcauseswhichworktogethertoproduceagivenresultTomakeaprocessbehavethewaywewantittobehaveWhatisSPC?VariousDefinitionsofSPC:ControllingProcessesusingStatisticalTechniquesorMethodsItistheuseofStatisticalContr

3、olChartstomonitorandcontrolmanufacturingoperationsinrealtimeItistheuseofControlCharts&StatisticalTechniquestopreventaprocessfromgoingoutofcontrol…whichaffectstheproductyield…aswellas…quality/reliabilitylevelsItistheeliminationofunnaturalvariancetoimp

4、rovetheprocess[SpecialCause]SPCis...SPCis…amethodofusingstatisticstoidentifypatternsandtrendsinordertocontroltheprocessDataCollectionProcessStatisticalMethodAbnormalStableProcessAnalysisActionsContinuousImprovementWhyarewedoingSPC?ImproveQuality/Yiel

5、dsIncreaseProductLifeandReliabilityGreaterCustomerSatisfactionGovernment&CustomerRequirementTobeMoreProfitableSPCPhilosophy..IImproveQualitybyremovingthecausesofproblemsinthesystem..inevitably..leadstoimprovedproductivityThepersondoingthejobismostkno

6、wledgeableaboutthejobPeoplewanttobeinvolvedanddotheirjobswellEverypersonwantstofeellikeavaluedcontributorSPCPhilosophy..IIAstructuredproblemsolvingprocessusingstatisticalmethodsandgraphicaltechniques…proceduresbettersolutionsthaninanunstructuredproce

7、ssGraphicalproblemsolvingtechniquesletyouknow:•therelativeimportanceofproblemstobesolved•whetherthechangesmadehavehadthedesiredimpactAdversarialrelationshipbetweenlabor&managementiscounterproductive&outmodedEveryOrganizationhasundiscovered“gems”waiti

8、ngtobedevelopedProductDesignProcessCustomerneedsQualityResponseNominalvalueConceptualFrameworkforSPCTheoriginsandnaturalofvariabilityConceptualFrameworkforSPCTheoriginsandnaturalofvariabilityManufacturingProcessRawMaterialToolCondition