《产品特性分级》PPT课件.ppt

1,特性分级ClassificationofCharacteristics,分级的定义DefinitionofClasses下列特性分级是根据产品关键程度：QSP1.04图1A进行特性分级.在该定义中的缺陷项目是指偏离QSP1.04图1B中规定的尺寸规范.ThefollowingcharacteristicclassarebasedupontheProductCriticalityClassification,Figure1A,QSP1.04,ClassificationofCharacteristics.ThetermdefectiveinthesedefinitionsreferstoexcursionsfromspecificationofamagnitudedefinedinFigure1B,QSP1.04.,2,特性分级ClassificationofCharacteristics,关键-关键特性如果有缺陷将可能引起操作人员、使用者或旁人的人身伤害。符号图肯定会引起操作运行故障。Drawing肯定会引起性能下降超过20%或不能满足Symbol法规要求。Critical-ThosecharacteristicswhichifdefectiveWillpossiblycauseinjuretoanoperator,userorbystander.WillcertainlycauseanoperatingfailureWillcertainlycauseaperformancelossinexcessof20%orfailuretomeetregulatoryrequirementsofEPA,CARB,ABS,UL,FM,etc.,3,特性分级ClassificationofCharacteristics,重要-重要特性如果有缺陷有很高的可能性会引起运行故障。有很高的可能性会引起性能下降超过20%或不满足法规要求。肯定或很可能引起超额的修理费用包括停机、劳务、备件等。肯定或很可能会由于机器失效引起产品完全报废，明显减少工具的使用寿命或产生过多的废品。Major-ThosecharacteristicswhichifdefectiveWillwithhighprobability.Causeanoperatingfailure.Willwithhighprobability.Causeaperformancelossinexcessof20%orfailuretomeetregulatoryrequirementsofEPS,CARB,ABS,UL,FM,etc.Willcertainlyorwithhighprobability,causeexcessivetotalcostofrepairincludingdowntime.labor.Replacementpart.etc.Willcertainlyorwithhighprobability,causeadisruptionofproductionbycausingamachinemalfunction,significantlyreducedtoollifeorexcessivescrape.,4,特性分级ClassificationofCharacteristics,一般-一般特性不包含在QSP1.04的产品关键程度分级中,但如果有缺陷根据经验和判断表明:无符号将肯定会降低产品外观质量,给客户提供劣质品。将肯定会引起额外的工艺调整、清理、返修等。肯定会在产品确认和成品控制时产生困难。Minor-ThosecharacteristicsnotincludedinProductCriticalityClassificationofQSP1.04.Butwhichjudgmentandexperienceindicateifdefective.Willcertainlydetractfromtheappearanceoftheproductindicatinginferiorvaluetothecustomer.Willcertainlyresultinextraprocessadjustments,cleaning,salvageetc.Willcertainlycausedifficultyinidentificationandcontroloftheendproduct.,5,特性分级ClassificationofCharacteristics,关键控制特性不管特性级别如何，在生产可接受的零件或产品时，关键控制特性是很重要的，关键控制特性在于特殊的预防控制。KeyControlCharacteristicCharacteristicswhicharemostimportantinproducinganacceptablepartorproduct.Regardlessofclassification.Focusonspecialpreventionorientedcontrols.,6,PPAP检查单PPAPCheckList,零件号和更改级别PartNo.&Revision在图纸上给尺寸编号Givingnumberstoalldimensionondrawings在尺寸检查表中注明未注尺寸公差值Confirmtoleranceofdimensionswhichnotoleranceondrawing专用工装、模具清单Specialtoolingandmouldlist量检具清单GaugelistFMEA纠正措施的跟踪FollowupthecorrectiveactionsofFMEA工程更改必须经DCEC产品部门批准EngineeringchangesmustbeapprovedbyDCECPEdepartment,7,PPAP检查单PPAPCheckList,尺寸、材料、性能测试项目必须经DCEC预先审核Dimension/material/performanceitemsshouldbeapprovedbyDCEC过程能力和统计过程数据Processcapabilityandstatisticalpackage分供方清单Partslistforsubcontractors过程能力小于1.33,进行工序质量改进,并有书面改进措施计划Cpkislessthan1.33,improveprocessanddocumentedinacorrectiveactionplan测试的不合格项目须经DCEC审批