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ID:49261623
大小:53.00 KB
页数:12页
时间:2020-02-02
《X-Y外形测量仪.ppt》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、DRO=Digital-Read-Out:显示的是在当前参考零坐标系下的X,Y坐标值Partview:windowdisplaysgraphicalinformationofapartanditsfeatures.测量术语(MeasurementTerminology)ProbesandToolsareinterchangeablewords.FOV=FieldofViewCMM=coordinatemeasuringmachineACMMusesTouchProbes,ContactProbes,orVideoProbes(Tools)Optical=Alightproje
2、ctorwitharoofprism&screenOPTEKmachinesarenon-contactvideoprobemachinesVideo=TelevisioncamerabasedCMMCCD=ChargedCoupledDevicePixel=APictureElementThesmallestelementinthepickuparray.ResolutionistheamountofpixelsinaCCDchiporonscreen,expressedastheamountofhorizontalandverticalpixels.I.e.1028×76
3、4or800×640etc.Scales=Thereferencesforeachaxis(Rulers),incorporatedinthetransport,torevealitsposition.一种测量圆的运算方法:LSBF=LeastSquaresBestFitCAD:computeraideddesignSPC:statisticalprocesscontrolCNC:computernumericalcontrolTheuseoftheVideoMicdependsonfivemainprincipals:Userprogrammability:overmove
4、mentmagnificationlightingdataacquisitiontools,andreporting.Automatingthesetaskseliminatesoperatorerrorandspeedsthroughput.Accuratepositioning:ofsamplesobtainedfromhighacceleration,linearmotors,andhighaccuracyscalestodetermineposition.Pathoptimizationmayimprovethroughput.Non-LinearErrorCorre
5、ction(NLEC):Thissoftwarefeatureallowsanyerrorsdetectedinthemeasurementsystemtobecorrectedforautomatically.Theentiremeasurementareaismappedandcorrectedforinherent(固有的)mechanicalerrors.Controlovertheimagefromthecameraandframegrabber:theQC5000softwareandlightingmaybeusedtomanipulatetheimagetoe
6、nhanceweakfeaturesandimageprocessingsoftwarelibraryfunctionsfortheframegrabbertakeadvantageofthevideoenhancementcapabilities.Videoedgedetection(VED):Auserprogrammablefeature,whichallowsthechoiceofhowthesoftwareseesafeature.SettingthethresholdstrengthandtheVEDmethodprovidesgreatflexibilityin
7、thetypesoffeatures,whichcanbemeasured.Teachvaluetypes:NormalteachandsoftEdgeTeachTypeofcoordinates:polar(极坐标)andCartesian(笛卡尔直角坐标系)UndertheFeaturetemplate,theColumncalled“F”meanstheformfactorofthemeasurement.Itisameasureofthequalityofthedetectededge.Tool
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