简介:Hybridmodelsderivedfromrotationalsolidslikecylinders,conesandsphereswereimplementedonCATIAsoftware.Firstly,maketheisoscelestriangularprism,cuboid,cylinder,cone,sphere,andtheprismwithtangentconicandcurvedtriangleends,thecuboidwithtangentcylindricalandcurvedrectangleends,thecylinderwithtangentsphericalandcurvedcircularendsasthebasicBooleandeferenceunitstotheprimarycylinders,conesandspheresonsymmetricalandsomecriticalgeometricconditions,formingaseriesofvariantsolidmodels.Secondly,makethedeferenceunitsaboveasthebasicunionunitstothemaincylinders,cones,andspheresaccordingly,forminganothersetofsolidmodels.Thirdly,makethetangentendsofunionunitsintoobliqueconic,cylindrical,orwithrevolvedtriangularpyramid,quarterlycylinderandannulusendsonsketchbasedfeaturestothemaincylinders,cones,andspheresrepeatedly,thusformingstillanothersetofsolidmodels.Itisexpectedthatthesederivativemodelsbebeneficialbothinthestructuredesign,hybridmodeling,andfiniteelementanalysisofengineeringcomponentsandincomprehensivetrainingofspatialconfigurationofengineeringgraphics.
简介:ThreedimensionalmodelsofshaftwerecompletedonCATIAPartDesignmodulewiththeChinesenationalstandard(GB)processstructuressuchaschamfers,threadsandtoolwithdrawalgrooves,centerholes,flat/woodruff/gibheadtaperkeyseats,grindingundercuts,straight-sidedsplines,circlipslotsandcollars.ThemodelingstepsarearrangedindialogmenuinterfacebyVB6.0,theshaftcreator,thatpermitsusersinputgeometricfeaturebasedparametersexplicitly,andthestandardizedprocessdataarereorganizedinExcelfilesthatcanbeinvokedcorrespondinglyinthemodelingprocedure.Itisaimedthatthisprocessmaysupplyasimplewayforshaftrapidmodelingandcomprehensivedisciplineforengineeringstudentsintheirprofessionaldesignactivities.
简介:摘要:通过文件操作、曲线曲面设计等五个方面的应用案例介绍了CATIA二次开发对提高工作效率和工作质量的中重要意义,接着对基于CAA C++和基于CAA Automation的两种CATIA二次开发方法进行介绍和对比分析。
简介:摘要:为了提高钢结构桥梁建模效率,笔者基于CATIA软件平台进行了二次开发,利用WPF框架开发了钢结构桥梁建模系统,包含模板管理平台和物料清单统计程序,模板管理平台将钢结构桥梁常用构件按照建模定位元素将钢桥构件分成点族、线族、面族、装配族四类,用户创建基本模板后载入模板管理平台中,利用模板管理平台的实例化功能,可快速读取结构树上的输入条件和关键参数,从而快速高效地完成钢结构桥梁的建模。以金塘大桥为例,对本文的建模方法进行了验证,经验证该方法可以高效、快速地完成钢结构桥梁三维模型的创建,为BIM技术在钢结构桥梁设计中的应用提供参考。
简介:Inordertosolvetheproblemoflowprecisionandcomplicationofthree-dimensionalmodelingaboutmicro-segmentgear,onemethodofsettinguptheaccurate3Dmodelisintroduced.Atfirst,theequationoftheprofilecurveandthededendumtransitioncurveissetup,andthecoordinatesofthewholetoothprofilearecalculatedbytheprogramdevelopedbyDephisoftware.AndthenthedataofcoordinatesisimportedtoCatia,three-dimensionalmodelingcanbegotthroughtheoperationsofrotating,mirror,incisionandarray.Themethodusedinthispaperisaccurateandsimple,whichsuppliestheacademicbasisofCAEanalysisandvirtualdesignformicro-segmentgearandrelevantproducts.