自动特征识别的新方法

36820028JOURNALOFXIANJIAOTONGUNIVERSITYVol.368Aug.2002:0253-987X(2002)08-0806-04,,(,710049,):,,.,,,,,,CAD/CAPP.:;;:TP391:ANovelApproachofAutomaticFeatureRecognitionWangBo,SongChangxin,ChengJingzhi(SchoolofLifeScienceandTechnology,XianJiaotongUniversity,Xian710049,China)Abstract:Afteranalysisofmachiningfeatureandfeatureparameteroftheboxpartandfurtherinvestigationonfeatureentitysmodel,anovelautomaticrecognitionapproachwasproposedthatmachiningfeaturewasau2tomaticallyextractedbycross2sectionaloutlineofafeature2basedenti2tysmodel.Thismethodstartswiththedatastructureoftheindividualmodeldesignfeatureintself,accordingtothemodelcharacteristicoftheCADsoftware,automaticallyrecognizestheoutlineringoutsidethecrosssectioninthesketchmapofdesignfeatureofthismodel,matchesthefeatureruleanditspeculiarityandidentifieseachconcretemachiningfeature.Thismayeffectuallypreventstheproblemsaboutfeaturerecombinationandfeature.Thiswayeffectuallypreventstheproblemsaboutfeaturerecombinationandfeatureinteractionrecongnition.Thusthatimplementedthatau2tomaticrecognitionofmachiningfeatureofcomplexboxpartandtheautomaticinformationtransitionofCAD/CAPPsystem.Keywords:featurerecognition;featureinteraction;informationextraction/(CAD/CAPP),CAD/CAM.,:CSG(ConstructiveSolidGeometry):2001-11-26.:(1947),,.:(73-2-1-2).[13].,,,,,,.,,,.,,,,,[48].,24126,,,,,.,,.,.,,,.,.,,,,,,,.1,,,.,.CAD,,.,,,,,.1.,,.[2].(1),/.(2).(3).(4).(5).22.1,.,17088,:[3].2,,.CSG,,..CSGB2Rep,CSGB2Rep.,,.,,,,,CAPP,CAD/CAPP.2.2,,,.,,,.,,,,,,2,,,,,90%.CADSolidworks2000plus,API(ApplicationProgrammingInterface).Solidworks2000plus:,,,,,.,,.CSGB2Rep,,,..(1),.(2)(,;,),.(3),,,.(4),.(5),.(6),.,,,,.,,,80836,.,,,.,,,,,.Solid2works2000plus,,,.2.3,,.,;,.,.Solidworks2000plus,:;,,.,,,..,,,.:12.3,,CAD/CAPP.CAD/CAPP,.:[1].[J].,1998,21(3):281288.[2].CAD/CAM[J].,1994(4):812.[3],.CAD/CAM[M].:,1996.[4]StefanoPD.Automaticextractionofformfeaturesforcasting[J].ComputerAidedDesign,1997,29(11):761770.[5]JianD,VijayanS.Manufacturingfeaturedeterminationandextraction,partA:heuristicapproach[J].ComputerAidedDesign,1997,29(7):475484.[6]HantJH,RequichaAAG.Modeler2independentfeaturerecognitioninadistributedenvironment[J].ComputerAidedDesign,1997,30(6):453463.[7]HantJH,RequichaAAG.FeaturerecognitionfromCADmodels[J].IEEEComputerGraphicsandApplications,1998,18(2):8094.[8]LeeJY,KimK.Afeature2basedapproachtoextractingma2chiningfeature[J].ComputerAidedDesign,1998,30(13):10191035.()IEEE6(IEEE)2002IEEE,;;IEEE.5,IEEE,IEEE.(Fellow),,(Member),,.9088,: