工业机器人毕业论文文献翻译中英文对照.docx
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ABSTRACT
Aworkstationandmethodforprocessingapluralityofworkpiecesincludesatleastonematerialhandlingrobotmovablealongaprocessingpathforsupportingaworkpiecetobemovedalongtheprocessingpath.Atleastonestationcanbedefinedbyatleastoneprocessingpositionadjacenttheprocessingpathforreceivingworkpiecestobeprocessedwhendeliveredandpositionedbytheatleastonematerialhandlingrobot.Interchangeableendeffecterscanbecon-nectedtothematerialhandlingrobotforholdingandsup-portingdifferentconfigurationsofworkpieces.Thematerialhandlingrobotcandisengagefromtheendeffecterattheprocessingposition,toallowengagementwithaprocessingtoolforperformingadditionalprocessingoperationsontheworkpiece.Aflexiblebodyworkstationforassemblingworkpiecescanusemultiplerobotsand/ormultiplefixturesforprocessingdifferentworkpiececonfigurationsinany
sequentialorderalongtwoprocessingpa
ths.
RELATEDAPPLICATIONS
Thepresentapplicationclaimsthebenefitofpro-visionalapplicationSer.No.
60/548,129filedonFeb.26,2004andSer.No.60/618,422filedonOct.13,2004.
FIELDOFTHEINVENTION
Thepresentinventionrelatestoaflexiblebodyworkstationforassemblingworkpiecesusingmultiplerobotsandmultiplefixtures,andmorespecifically,thepresentinventionprovidesweldingworkstationsforauto-motiveassemblylineshavingmultipleindependentlywork-ingweldingrobotsandmultiplefixturesforholdingwork-pieces.
BACKGROUNDOFTHEINVENTION
Theefficiencyofaweldingworkstationcanbedefinedbytheamountoftime,normallyapercentage,thataweldingrobotspendsweldingcomparedtothetotaltimerequiredforaparticularrepetitivecycle.Theefficiencyoftheworkstationrelatestotheamountoftimethataweldingrobottakestoperformvariousweldingoperationscomparedtothetotalamountoftimethattheweldingrobotrequiresforaparticularrepetitivecycle.Idletimeforaweldingrobotcanoccurwhenanewworkpieceisloadedandpreparedinafixture.Iftheworkstationhasoneweldingrobotandonefixture,theweldingrobotwillstandidleasacompletedpartisunloadedfromthefixtureandanewworkpieceisloadedontothefixture.Inthepriorart,thisproblemwasaddressedbyaddingasecondfixtureattheworkstationwithinreachofasingleweldingrobot.Inaworkstationwithtwofixtures,theweldingrobotcancompleteweldingoperationsatonefixturewhileworkpiecesarebeingloadedandunloadedatthesecondfixture.Whentheweldingprocessiscompleteatthefirstfixture,theweldingrobotcanmovetothesecondfixtureandimmediatelycommencewelding.
Theamountoftimethataworkpieceispositionedinafixturewhileworkisbeingperformedcomparedtothetotalamountoftimethataworkpieceispositionedinafixturecorrespondstoworkpieceefficiency.Theamountoftimethataworkpiecesitsidleinafixturereducestheoveralloperatingcapacityoftheworkstationbyreducing
through-put,normallyreportedinpartsperhourorsimilarunitsfortheoverallassemblyprocess.Inaworkstationhavingonefixtureandoneweldingrobot,theamountoftimethataworkpiecesitsidleinthefixtureisminimizedbecausetheweldingrobotimmediatelycommencesweldingoperationsassoonasaworkpieceisloadedandanyothersetupproceduresarecompleted.However,inaworkstationthathastwofixturesandoneweldingrobot,aworkpieceisloadedontoonefixture,issetup,andthensitsidleuntiltheweldingrobotcompletesweldingoperationsatthesecondfixture.Therefore,inaworkstationhavingonefixtureandoneweldingrobot,theworkpieceefficiencyismaximizedwhileinaworkstationhavingtwofixturesandoneweldingrobottheweldingefficiencyismaximized.Itisdesirabletoprovideaworkstationwhereintheweldingefficiencyandtheworkpieceefficiencyarebothenhanced.
SUMMARYOFTHEINVENTION
Thepresentinventioncanincludeasingleorapluralityofsimilarworkstationspositionedinsequence
alonganassemblyline.Amovablematerialhandlingtransportationortransferrobotcanbelocatedinbetweenadjacentworkstationsformovingworkpiecesfromoneworkstationtothenext.Thepresentinventioncanalsoincludearobotforprocessingtheworkpieceswhileheldbythematerialhandlingtransferrobotinbetweentheadjacentworkstations.
Thepresentinventionincludesaflexiblebodyshopforassemblingworkpiecesusingasingleormultiplerobotsandasingleormultiplefixtures.Thepresentinventionincludesmovablematerialhandlingrobots,andstationarymaterialprocessingrobotsincombinationattheflexiblebodyworkstation.Theworkstationcanperformprocessingoperationsonmultipleworkpiecessequentially,andperformsdifferentprocessingoperationsthroughtheworkstationsimultaneously.Thematerialprocessingrobotsperformingprocessingoperationsontheworkpiecescanbelocatedadjacenttheatleastoneprocessingpath,orinbetweenfirstandsecondprocessingpathsandareindependentlymovablerelativetoeachother.Theworkpiecefixturescanbeprovidedintheformofinterchangeableendeffectersconnectabletotheatleastonematerialhandlingrobotforholdingandsupportingdifferentworkpiececon-figurationsbyexchangingoneinterchangeableendeffecterconfigurationforadifferentinterchangeableendeffecterworkpiececonfiguration.Theinterchangeableendeffecterscanbegeometryfixturesfordifferentworkpiececonfigurationstoallowprocessingdifferentworkpiececonfigurationsinanydesiredsequencebychangingendeffectersautomaticallytocorrespondtothenextworkpiececonfigurationtobeprocessed.
Thepresentinventioncanincludeapluralityofsimilarworkstationspositionedinsequencealonganassem¬blyline.Theatleastonematerialhandlingrobotcanhandoffaworkpiecefromatransferpositionatoneendoftheprocessingpathtoanothermaterialhandlingrobotformovementalonganotherprocessingpathformovingwork¬piecesfromoneworkstationtothenextand/orcanpositionaworkpieceatmultipleworkstationsbeforetransfer.Thepresentinventioncanalso
includeamaterialprocessingrobotforprocessingtheworkpiecewhilebeingheldbythematerialhandlingrobotatthetransferpositioninbetweenadjacentworkstations.
Thepresentinventioncanprovideanelectroniccontrolmeansforcoordinatingthemovementofthematerialhandlingrobotsand/orthematerialprocessingrobots.Theelectroniccontrolmeanscanbeprogrammableforprocess¬inganymixofworkpiecesofdifferentconfigurationsinanysequentialorder.Theelectroniccontrolmeanscanpresenttheappropriateinterchangeableendeffecterforconnectiontoamaterialhandlingrobotinordertomovetheworkpiecealongacorrespondingprocessingpathtoaprocessingpositionadjacenttheprocessingpathforinteractionwiththematerialprocessingrobotorrobotslocatedattheprocessingposition.Theelectroniccontrolmeanscansignaleachmaterialhandlingrobotwhenanexchangeofinterchange¬ableendeffectersisnecessaryinordertoprocessadifferentworkpiececonfigurationduringthenextcycleofmovementalongtheprocessingpath.Thematerialprocessingrobotcanbecontrolledwithdifferentprogrammablesequencesforthevariousworkpiececonfigurationstobeprocessedinordertoperformthenecessaryprocessingoperations,bywayofexampleandnotlimitationsuchaswelding,inanefficientmannerfortheparticularworkpiececonfigurationbeingprocessed.
Otherobjects,advantagesandapplicationsofthepresentinventionwillbecomeapparenttothoseskilledintheartwhenthefollowingdescriptionofthebestmodecontemplatedforpracticingtheinventionisreadinconjunctionwiththeaccompanyingdrawings.
BRIEFDESCRIPTIONOFTHEDRAWINGS
Thedescriptionhereinmakesreferencetotheaccompanyingdrawingswhereinlikereferencenumeralsrefertolikeworkpiecesthroughouttheseveralviews,andwherein:
FIG.1isanoverheadviewofaworkstationaccordingtothepresentinvention;FIG.2isasimplifiedperspectiveviewoftheworkstationaccordingtothepresentinventionwithafirstmaterialhandlingrobotataloadingposition,asecondmaterialhandlingrobotataprocessingposition,andmaterialprocessingrobotslocatedadjacenttheprocessingpositioninbetweenthefirstandsecondprocessingpathsfollowedbythefirstandsecondmaterialhandlingrobots;AndFIG.3isasimplifiedperspectiveviewoftheworkstationaccordingtothepresentinventionwiththefirstmaterialhandlingrobotmovedintotheprocessingposition,thesecondmaterialhandlingrobotmovedtotheunloadingposition,andthematerialprocessingrobotlocatedadjacenttheprocessingpositioninbetweenthefirstandsecondprocessingpaths.
DESCRIPTIONOFTHEPREFERREDEMBODIMENT
ReferringnowtoFIGS.1-3,thepresentinventionincludesaflexiblebodyworkstation10forassemblingworkpieces12.Theworkstation10canincludeatleastonematerialhandlingrobot14a,14bmovablealongaprocess¬ingpath16a,16bforsupportingaworkpiece12tobemovedalongtheprocessingpath16a,16b.Theworkstationcanincludeatleastonestationdefinedbyatleastoneprocessingposition
adjacenttheprocessingpath16a,16bforreceivingworkpieces12tobeprocessedwhendeliveredandposi¬tionedbytheatleastonematerialhandlingrobot14a,14b.Astationarymonument18canbeprovidedifdesired,forlargeworkpiecestobeprocessed.
Bywayofexampleandnotlimitation,atleastonematerialhandlingrobotcanincludeafirstmaterialhandlingrobot14amovablealongafirstprocessingpath16aforsupportingafirstworkpiece12atobemovedalongt