工业机器人毕业论文文献翻译中英文对照.docx

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.The