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外文翻译--新颖的夹具设计和基于虚拟现实的装配系统 英文版.pdf

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外文翻译--新颖的夹具设计和基于虚拟现实的装配系统 英文版.pdf

PROCEEDINGSOFTHE2006IEEE/RSJINTERNATIONALCONFERENCEONINTELLIGENTROBOTSANDSYSTEMSOCTOBER915,2006,BEIJING,CHINAANOVELMODULARFIXTUREDESIGNANDASSEMBLYSYSTEMBASEDONVRPENGGAOLIANG,LIUWENJIANSCHOOLOFMECHATRONICSENGINEERINGHARBININSTITUTEOFTECHNOLOGYHARBIN,150001,CHINAPGL7782AHITEDUCNABSTRACTMODULARFIXTURESAREONEOFTHEIMPORTANTASPECTSOFMANUFACTURINGTHISPAPERPRESENTSADESKTOPVRSYSTEMFORMODULARFIXTUREDESIGNTHEVIRTUALENVIRONMENTISDESIGNEDANDTHEDESIGNPROCEDUREISPROPOSEDITASSISTSTHEDESIGNERTOMAKETHEFEASIBLEDESIGNDECISIONSEFFECTIVELYANDEFFICIENTLYAHIERARCHICALDATAMODELISPROPOSEDTOREPRESENTTHEMODULARFIXTUREASSEMBLYBASEDONTHISSTRUCTURE,THEUSERCANMANIPULATETHEVIRTUALMODELSPRECISELYINVEDURINGTHEDESIGNANDASSEMBLYPROCESSESMOREOVER,THEMACHININGSIMULATIONFORMANUFACTURINGINTERACTIONCHECKINGISDISCUSSEDANDIMPLEMENTEDFINALLY,THECASESTUDYHASDEMONSTRATEDTHEFUNCTIONALITYOFTHEPROPOSEDSYSTEMCOMPAREDWITHTHEIMMERSIVEVRSYSTEM,THEPROPOSEDSYSTEMHASOFFEREDANAFFORDABLEANDPORTABLESOLUTIONFORMODULARFIXTURESDESIGNINDEXTERMSMODULARFIXTURE,DESKTOPVR,ASSEMBLYDESIGN,MACHININGSIMLULATIONIINTRODUCTIONMODULARFIXTURESAREONEOFTHEIMPORTANTASPECTSOFMANUFACTURINGPROPERFIXTUREDESIGNISCRUCIALTOPRODUCTQUALITYINTERMSOFPRECISION,ACCURACY,ANDFINISHOFTHEMACHINEDPARTMODULARFIXTUREISASYSTEMOFINTERCHANGEEABLEANDHIGHLYSTANDARDIZEDCOMPONENTSDESIGNEDTOSECURELYANDACCURATELYPOSITION,HOLD,ANDSUPPORTTHEWORKPIECETHROUGHOUTTHEMACHININGPROCESS1TRADITIONALLY,FIXTUREDESIGNERSRELYONEXPERIENCEORUSETRIALANDERRORMETHODSTODETERMINEANAPPROPRIATEFIXTURINGSCHEMEWITHTHEADVENTOFCOMPUTERTECHNOLOGY,COMPUTERAIDEDDESIGNHASBEENPREVALENTINTHEAREAOFMODULARFIXTUREDESIGNINGENERAL,THEASSOCIATEDFIXTUREDESIGNACTIVITIES,NAMELYSETUPPLANNING,FIXTUREELEMENTDESIGN,ANDFIXTURELAYOUTDESIGNAREOFTENDEALTWITHATTHEDOWNSTREAMENDOFTHEMACHINETOOLDEVELOPMENTLIFECYCLETHESEPRACTICESDONOTLENDTHEMSELVESWELLTOTHEBRIDGINGOFDESIGNANDMANUFACTURINGACTIVITIESFOREXAMPLE,VERYFEWSYSTEMSHAVEINCORPORATEDTHEFUNCTIONALITYOFDETECTINGMACHININGINTERFERENCETHISLEADSTOAGAPBETWEENTHEFIXTUREDESIGNANDMANUFACTURINGOPERATIONSWHERETHEASPECTOFCUTTERPATHSISNOTCONSIDEREDDURINGTHEDESIGNSTAGE2ASARESULT,REDESIGNCANNOTBEAVOIDEDWHENTHECUTTERISFOUNDTOINTERFEREWITHTHEFIXTURECOMPONENTSINTHEMANUFACTURINGSETUPTHEREFORE,INORDERTOBRINGMACHININGFIXTUREDESIGNINTOTHEARENAOFFLEXIBLEMANUFACTURING,AMORESYSTEMATICANDNATURALDESIGNENVIRONMENTISREQUIREDASASYNTHETIC,3D,INTERACTIVEENVIRONMENTTYPICALLYGENERATEDBYACOMPUTER,VRHASBEENRECOGNIZEDASAVERYPOWERFULHUMANCOMPUTERINTERFACEFORDECADES4VRHOLDSGREATPOTENTIALINMANUFACTURINGAPPLICATIONSTOSOLVEPROBLEMSBEFOREBEINGEMPLOYEDINPRACTICALMANUFACTURINGTHEREBYPREVENTINGCOSTLYMISTAKESTHEADVANCESINVRTECHNOLOGYINTHELASTDECADEHAVEPROVIDEDTHEIMPETUSFORAPPLYINGVRTODIFFERENTENGINEERINGAPPLICATIONSSUCHASPRODUCTDESIGN5,ASSEMBLY6,MACHININGSIMULATION7,ANDTRAINING8THEGOALOFTHISPAPERISTODEVELOPAVRBASEDMODULARFIXTURESDESIGNSYSTEMVMJFDSTHISISTHEFIRSTSTEPTODEVELOPANINTEGRATEDANDIMMERSIVEENVIRONMENTFORMODULARFIXTUREDESIGNTHISAPPLICATIONHASTHEADVANTAGESOFMAKINGTHEFIXTUREDESIGNINANATURALANDINSTRUCTIVEMANNER,PROVIDINGBETTERMATCHTOTHEWORKINGCONDITIONS,REDUCINGLEADTIME,ANDGENERALLYPROVIDINGASIGNIFICANTENHANCEMENTOFFIXTUREPRODUCTIVITYANDECONOMYIIOVERVIEWOFTHEPROPOSEDSYSTEMTHESYSTEMARCHITECTUREOFTHEPROPOSEDDESKTOPVRSYSTEMISMODULARISEDBASEDONTHEFUNCTIONALREQUIREMENTSOFTHESYSTEM,WHICHISSHOWNINFIG1ATTHESYSTEMLEVEL,THREEMODULESOFPROPOSEDSYSTEM,NAMELY,GRAPHICINTERFACEGUI,VIRTUALENVIRONMENTVEANDDATABASEMODULESAREDESIGNEDFOREACHOFTHEMODULES,ASETOFOBJECTSHASBEENIDENTIFIEDTOREALIZEITSFUNCTIONALREQUIREMENTSTHEDETAILEDOBJECTDESIGNANDIMPLEMENTATIONAREOMITTEDFROMTHISPAPERINSTEAD,THEBRIEFDESCRIPTIONOFTHESETHREEMODULESISGIVENBELOW1GRAPHICINTERFACEGUITHEGUIISBASICALLYAFRIENDLYGRAPHICINTERFACETHATISUSEDTOINTEGRATETHEVIRTUALENVIRONMENTANDMODULARFIXTUREDESIGNACTIONS2VIRTUALENVIRONMENTVETHEVEPROVIDESTHEUSERSWITHA3DDISPLAYFORNAVIGATINGANDMANIPULATINGTHEMODELSOFMODULARFIXTURESYSTEMANDITSCOMPONENTSINTHEVIRTUALENVIRONMENTASSHOWNINFIG1,THEVIRTUALENVIRONMENTMODULECOMPRISESTWOPARTS,NAMELYASSEMBLYDESIGNENVIRONMENTANDMACHININGSIMULATIONENVIRONMENTTHEUSERSELECTSAPPROPRIATEELEMENTSANDPUTSDOWNTHESEELEMENTSONTHEDESKINTHEASSEMBLYDESIGNAREATHENHEASSEMBLESTHESELECTEDELEMENTSONEBYONETOBUILDUPTHEFINALFIXTURESYSTEMWITHTHEGUIDANCEOFTHESYSTEM142440259X/06/2000C2006IEEE2650AUTHORIZEDLICENSEDUSELIMITEDTONANCHANGUNIVERSITYDOWNLOADEDONDECEMBER20,2009AT2244FROMIEEEXPLORERESTRICTIONSAPPLYFIG1OVERVIEWOFTHEDESKTOPVRBASEDMODULARFIXTUREDESIGNSYSTEM3DATABASETHEDATABASEDEPOSITALLOFTHEMODELSOFENVIRONMENTANDMODULARFIXTUREELEMENTS,ASWELLASTHEDOMAINKNOWLEDGEANDUSEFULCASESTHEREARE5DATABASESSHOWNINFIG1AMONGTHEM,KNOWLEDGERULEBASEGOVERNINGALLFIXTUREPLANNINGPRINCIPLESFORMSTHEBRAINSOFTHESYSTEMIIIPROCEDUREOFMODULARFIXTUREDESIGNINTHISSECTION,ANINSTRUCTIVEMODULARFIXTUREDESIGNPROCEDUREWITHINVEISPRESENTEDBESIDESTHE3DDEPTHTHATTHEUSERSFEELANDTHEREALWORLDLIKEOPERATIONPROCESS,THISPROCEDUREFEATURESINTELLIGENCEANDINTRODUCTIONDURINGTHEDESIGNPROCESS,SOMEUSEFULCASESANDSUGGESTIONWILLBEPRESENTEDTOTHEUSERFORREFERENCEBASEDONINTELLIGENTINF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

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