工艺规划与CADCAM数控机床系统集成.doc

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1、AfeasibleapproachtotheintegrationofCADandCAPP 综合方法与总体思路AlthoughcurrentCADsystemsaredeclaredtobefeature-based,infact,theso-calledfeatureisjustamodelingmacroormenunamesuchasProtrusion,Revolution,Cutout,Block,etc.,insteadofadesignfeatureormanufacturingfeatureinaccordancew

2、ithengineeringpractice.Consequently,productmodeldatainsufficiencyandincompatibilitybetweenvarietiesofapplicationsystemsarestillthemajorbarrierstosystemintegration,especiallytheintegrationofdesignandprocessplanning.Thispaperproposesapracticalsolutionforabi-directionalin

3、tegrationofCADandCAPPontheplatformofcommercialCADsystems.Thekeytechniquessuchasfeaturerecognitionandconversion,featureparameterandconstraintextraction,featuretreereconstruction,technicalinformationprocessing,processplanning,automaticprocessdrawingmarkingand3Dmaterialst

4、ockCADmodelgeneratingarediscussed.Andtheextractedfeaturesandtheirrelatedtechnicalinformationandknowledgeareencapsulatedtogetherwiththegeometry-orientedCADmodeltoformanintegratedproductinformationmodeltofacilitateeffectiveintegrationwiththedownstreamactivities.Theintegr

5、atedCAD/CAPPsystemisimplementedonacommercialCADpackage,UGS/SolidEdge.Acasestudyandindustryimplementationillustratethefeasibilityoftheapproachproposed.ArticleOutline1.Introduction2.Relatedresearchworkandreview2.1.Featurerecognitionandtechnicalinformationprocessing2.2.Pr

6、ocessplanning2.3.Systemintegration3.Theproposedmethodology3.1.Systemarchitecture3.2.Informationintegration3.3.Functionmodel4.Featurerecognitionandconversion4.1.Featurerecognitionandconversionalgorithm4.2.Manufacturingfeaturerecognitionandreconstruction5.Processplanning

7、5.1.Processdecision-making5.2.Processselectionandoperationsequencingoptimization6.Stockmodelandprocessdrawinggeneration6.1.Stockmodelgenerating6.2.Processdrawinggenerating6.3.Otheraidedfunctions7.ConclusionsReferencesAframeworkforextendingcomputeraidedprocessplanningto

8、includebusinessactivitiesandcomputeraideddesignandmanufacturing(CAD/CAM)dataretrieval 工艺过程规划与CAD/CAM制造单元的数据提取与互换框架（包含