学科分类
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2 个结果
  • 简介:Thispaperpresentsaflexiblemethodfortherepresentationofweldedseambasedonsplineinterpolation.Inthismethod,thetoolpathofweldingrobotcanbegeneratedautomaticallyfroma3DCADmodel.ThistechniquehasbeenimplementedanddemonstratedintheFANUCArcWeldingRobotWorkstation.Accordingtothemethod,asoftwaresystemisdevelopedusingVBAofSolidWorks2006.ItoffersaninterfacebetweenSolidWorksandROBOGUIDE,theoff-lineprogrammingsoftwareofFANUCrobot.Itcombinesthestrongmodelingfunctionoftheformerandthesimulatingfunctionofthelatter.Italsohasthecapabilityofcommunicationwithon-linerobot.Theresultdatahaveshownitshighaccuracyandstrongreliabilityinexperiments.Thismethodwillimprovetheintelligenceandtheflexibilityoftheweldingrobotworkstation.

  • 标签: 焊接机器人 计算机辅助设计 样条函数曲线 焊接裂缝
  • 简介:Microstructureoftransientliquidphase(TLP)diffusionbondedathirdgenerationsinglecrystalsuperalloyjointwasinvestigatedusingscanningelectronmicroscopy(SEM),andmechanicalpropertiestestofjointwascarriedout,forobtainingrelationshipbetweenmicrostructureandmechanicalpropertiesofjoint.Theresultsshowedthatthejointcontainedbondingzoneandbasemetal.Thediffusionzonewasobviouslyobserved.Whenitwasnotfinishedforisothermalsolidificationprocess,thebondingzonewouldcontainisothermalsolidificationzoneandrapidsolidificationzone.Metallographicexaminationrevealedthatisothermalsolidificationzonewasconsistedofyandphase.Rapidsolidificationzonewasconsistedoftwodifferentstructures,whichwereternaryeutecticofborides,yandy,phasedevelopingattheedgeofjoint,binaryeutecticofyandphaseappearingintheportionofjoint.Whenitwasnotenoughforhomogenizationprocessundertheconditionoffinishingisothermalsolidificationprocess,thebondingzonewouldcontainisothermalsolidificationzoneandboridesattheinterface.Undertheconditionsofrelativelyhighweldingtemperatureandlongweldingtime,averagetensilestrengthofjointwasequivalenttothatofparentmaterial.

  • 标签: single crystal SUPERALLOY TRANSIENT liquid phase