欢迎来到天天文库
浏览记录
ID:52286346
大小:1.59 MB
页数:53页
时间:2020-04-03
《MSA测量系统分析英文版.ppt》由会员上传分享,免费在线阅读,更多相关内容在应用文档-天天文库。
1、SPCforTestSystem§GaugeR&R1有多少個黑點?2這些橫線是不是平行的?3是靜的還是動的?4三個正方形5幾何謎題6沒有適當的量測工具就無法管理品質!!7比較式絕對式待測量轉換訊息標準值顯示量測儀量測之種類待測量標準量轉換訊息轉換訊息比測儀顯示轉換放大8BasicConceptsEveryProcessproducea“Product”.EveryproductpossessesQualities(Features)EveryQualityFeatureCanbemeasuredTotalVariation=ProductVariati
2、on+MeasurementVariationSomeVariationInherentinSystemDesign.SomeVariationisduetoaFaultyperformanceoftheSystem(s).9ComponentsofMeasurementSystemEquipmentorGageTypeofGage:Attribute:go-nogo,visionsystemsVariable:calipers,probe,coordinatemeasurementmachinesUnitofMeasurement-discrimin
3、ationAtleast1/10of6*processstandarddeviation(6s)Otherrules:atleast1/10oftoleranceOperator&OperatingInstructionsPartlocatingororientationschemeagagemustbeabletoconsistentlylocatethepartbeingmeasured.10TermsYouShouldKnow•Measurementsystem:Thecollectionofoperations,procedures,gages
4、andpersonnelusetoobtainmeasurementsofworkpiececharacteristics•Gage:Adeviceusedtoobtainmeasurements•Repeatability:Repeatability(Precision)Thevariationinmeasurementobtainedwithonemeasurementinstrumentwhenusedbyoneoperatortomeasure.)anidenticalcharacteristiconthesamepart.(EV:Equipm
5、entVariation•Reproducibility:Thevariationintheaverageofthemeasurementsmadebydifferentoperatorsusingthesamemeasurementinstrumentwhenmeasuringidenticalcharacteristicsonthesamepart.(AV:AppraiserVariation)11TermsYouShouldKnow•Bias:Thedifferencebetweentheobservedaverageofmeasurements
6、andthereferencevalue.•PercentR&R:Thepercentageofprocessvariationrelatedtothemeasurementsystemforrepeatabilityandreproducibility•Stability:Thetotalvariationinthemeasurementsobtainedwithameasurementsystemonthesamemasterorpartswhenmeasuringsinglecharacteristicsoveranextendedtimeper
7、iod.•Linearity:Thedifferenceinthebiasvaluesthroughtheexpectedoperatingrangeofthegage.121.AccuracyDifferencebetweenthetrueaverageandtheobservedaverage(trueaveragemaybeobtainedusingamoreprecisemeasuringtool)132.ReproducibilityVariationinaverageofmeasurementsmadebydifferentoperator
8、susingthesamegagemeasuringthesamepart.Appraiser
此文档下载收益归作者所有