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JCENTSOUTHUNIV201219174−178DOI101007/S11771−012−0988−3MULTISTAGEOPTIMUMDESIGNOFMAGAZINETYPEAUTOMATICTOOLCHANGERARMKIMJAEHYUN,LEECHOONMANSCHOOLOFMECHATRONICS,CHANGWONNATIONALUNIVERSITY,CHANGWON641773,KOREACENTRALSOUTHUNIVERSITYPRESSANDSPRINGERVERLAGBERLINHEIDELBERG2012ABSTRACTTOENHANCEMACHININGEFFICIENCY,TOOLCHANGETIMEHASTOBEREDUCEDTHUS,FORANAUTOMATICTOOLCHANGERATTACHEDTOAMACHININGCENTER,THETOOLCHANGETIMEISTOBEREDUCEDALSOTHEAUTOMATICTOOLCHANGERISAMAINPARTOFTHEMACHININGCENTERASADRIVINGSOURCETHESTATICATTRIBUTESOFTHEAUTOMATICTOOLCHANGERUSINGTHECOMMERCIALCODE,ANSYSWORKBENCHV12,WERETRIEDTOINTERPRETANDTHEOPTIMUMDESIGNOFAUTOMATICTOOLCHANGERARMWASPROPOSEDBYPERFORMINGTHEMULTISTAGEOPTIMUMDESIGNTHESHAPEOPTIMIZATIONOFTHEAUTOMATICTOOLCHANGERWASPROPOSEDANDTHERESULTWASVERIFIEDTOOBTAINACCEPTABLEIMPROVEMENTSITISPOSSIBLETOOBTAINANOPTIMIZEDMODELINWHICHTHEMAXIMUMDEFORMATION,MAXIMUMSTRESS,ANDMASSAREREDUCEDBY1046,1289AND926,RESPECTIVELY,COMPAREDWITHTHOSEOFTHEINITIALMODELALSO,THERESULTSBETWEENCONVENTIONALMETHODBYTHEDESIGNOFEXPERIMENTSANDPROPOSEDMETHODBYTHEMULTISTAGEOPTIMUMDESIGNMETHODWERECOMPAREDKEYWORDSAUTOMATICTOOLCHANGER;OPTIMUMDESIGN;STRUCTURALANALYSIS;EXCHANGEARM1INTRODUCTIONRECENTLY,INMACHINEMANUFACTURINGINDUSTRIES,MOLDSANDMACHINEPARTSHAVEBEENCHANGEDTOSMALLQUANTITYBATCHPRODUCTIONSYSTEMALSO,IMPROVEMENTSINPRODUCTIVITYANDCUTTINGRATEAREREQUIREDWHEREAS,ITISTRUETHATHIGHQUALITYANDLOWCOSTARETOBETARGETEDFROMAPRACTICALSTANDPOINTTHEREFORE,THEMACHINETOOLSFORSUCHAIMSPURSUETOACHIEVEHIGHSPEEDPROCESSING,IMPLEMENTAUTOMATION,ANDREDUCEDLEADTIMEASARESULT,ITISPOSSIBLETOCHECKTHESTATESOFTOOLSANDWORKPIECESUSINGPROPERSENSORSINTHEMACHINETOOLSINADDITION,AMACHININGCENTERBASEDONANAUTOMATICTOOLCHANGERATCANDANAUTOMATICPALLETCHANGERAPCAIMSTOOPERATEANUNATTENDEDOPERATIONFACTORYFOR24HTHEAUTOMATICTOOLCHANGERSTORESTHETOOLSUSEDINAMACHININGCENTERTOITSMAGAZINEANDCHANGESTHETOOLSAUTOMATICALLYASREQUIREDTHETOOLCHANGEDBYSUCHATCISPRECISELYEQUIPPEDTOASPINDLE1ALSO,ITREPRESENTSANADVANTAGETHATANOPERATOROFTHEMACHININGCENTERISABLETOENGAGEINOTHERWORKSDUETOTHELESSINTERFERENCEFORTHEMACHINETOOLSTHATISTOSAY,THEOPERATORCANCONTROLOTHERMACHINETOOLSORPREPARETHENEXTWORKPIECES,WHICHLEADSTOREDUCEDPRODUCTIONTIMETHEMAGAZINETYPEATCUSEDINTHISSTUDYREPRESENTSAFEATURETHATMANYTOOLSARESTOREDINTHEMAGAZINEINTHECHANGEOFTOOLS,TWOARMSMOVETOCHANGETHEEQUIPPEDTOOLTOTHENEXTTOOLBYROTATINGTHEMBY180INADIRECTLYCHANGEDMANNER2THUS,ITISNECESSARYTOENSURETHETECHNOLOGIESFORBOTHTHESTRUCTURALCHARACTERISTICSOFARMSANDTHEDESIGNOFLIGHTWEIGHTSIMULTANEOUSLYINACTUALINDUSTRIALFIELDS,DESIGNOPTIMIZATIONISVERYIMPORTANTTHEREFORE,VARIOUSOPTIMIZATIONMETHODSAREPRESENTEDFORTHEOPTIMIZATIONOFVARIOUSMECHANICALPARTS3SONGETAL4PRESENTEDOPTIMIZATIONDESIGNOFTHESHORTJOURNALBEARINGBYUSINGENHANCEDARTIFICIALLIFEOPTIMIZATIONALGORITHMALLAIREETAL5COMBINEDTHETOPOLOGICALANDSHAPEDERIVATIONSONTHESTRUCTURALOPTIMIZATIONBAGCIANDAYKUT6PRESENTEDTAGUCHIOPTIMIZATIONTOVERIFYTHEOPTIMUMSURFACEROUGHNESSOFTHECNCMILLINGLAMBERTI7PRESENTEDADESIGNOPTIMIZATIONALGORITHMBASEDONSIMULATEDANNEALINGFORTRUSSSTRUCTURESSEKULSKI8PRESENTEDTHATTHEGENETICALGORITHMCANBEANEFFICIENTMULTIOBJECTIVEOPTIMIZATIONTOOLFORSIMULTANEOUSDESIGNOFTHETOPOLOGYANDSIZINGOFSHIPSTRUCTURESSEOETAL9PRESENTEDSHAPEOPTIMIZATIONANDITSEXTENSIONTOTOPOLOGICALDESIGNBASEDONISOGEOMETRICANALYSISINOPTIMIZINGTHEATCARM,THEFACTORSOFTHESTRUCTURALCHARACTERISTICSANDTHELIGHTWEIGHTARECONTRARYTOEACHOTHER10ITSHOWSATRADEOFFTHATIFITPURSUESTOIMPROVETHELIGHTWEIGHTINSTRUCTURES,THESTRUCTURALCHARACTERISTICSWILLREPRESENTAWEAKNESS,ANDIFTHEFOUNDATIONITEMWORKRTI040103SUPPORTEDBYGRANTFROMREGIONALTECHNOLOGYINNOVATIONPROGRAMOFTHEMINISTRYOFKNOWLEDGEECONOMYMKE,KOREARECEIVEDDATE2011−04−26;ACCEPTEDDATE2011−10−10CORRESPONDINGAUTHORLEECHOONMAN,PROFESSOR,PHD;TEL82−55−213−3622;EMAILCMLEECHANGWONACKRJCENTSOUTHUNIV201219174−178175STRUCTURALCHARACTERISTICSAREIMPROVED,THEACHIEVEMENTOFTHELIGHTWEIGHTISDIFFICULTTHEREFORE,FORSATISFYINGTHESECONTRARYFACTORSANDOPTIMIZINGTHEM,THEOPTIMIZATIONOFSUCHARMSHAPESINDIFFERENTWAYISPRESENTEDBYUSINGTHEDESIGNOFEXPERIMENTS11INTHISSTUDY,FORACHIEVINGAMOREIMPROVEDOPTIMIZATIONMODELTHANTHEPREVIOUSSTUDY11,AMULTISTAGEOPTIMUMDESIGNWASPERFORMEDTHEOPTIMUMDESIGNWASPRESENTEDUSINGTHECOMMERCIALANALYSISPROGRAMS,CATIAV5ANDANSYSWORKBENCH,ANDTHEANALYTICVALIDITYWASINVESTIGATEDTHROUGHCOMPARINGTHEINITIALANDCONVENTIONALOPTIMIZEDMODELSWITHTHEOPTIMIZEDMODELIMPLEMENTEDINTHISSTUDY2STRUCTUREOFATCATCCONSISTSOFTHREEELEMENTS,SUCHASMAGAZINEPART,CHANGERPART,ANDARMPARTTHEMAGAZINEPARTISADEVICETHATSTORESMANYTOOLSANDCHANGESTOOLSUSINGSERVOMOTORSTHECHANGERPARTISEQUIPPEDWITHSERVOMOTORS,WHICHROTATEARMSTHEARMPARTSHOWSANARMSHAPEANDCHANGESTOOLSBYGEARINGTHETOOLSINTHESPINDLEANDMAGAZINEINAMACHININGCENTERBYROTATINGTHEMBY180FIGURE1ILLUSTRATESTHEENTIRESTRUCTUREOFTHEATCMODELLEDBYUSINGTHECATIAV5R17FIG1STRUCTUREOFMAGAZINETYPEATCTHESTRUCTURALANALYSISOFTHEINITIALMODELOFTHEARMWASPERFORMEDREGARDINGTHEREFERENCEOFTHEPERFORMEDFINITEELEMENTANALYSIS,THEFINITEELEMENTANALYSISOFTHEINITIALMODELWASCARRIEDOUTUSINGTHECOMMERCIALANALYSISPROGRAM,ANSYSWORKBENCHV12THEANALYSISWASPERFORMEDBYMINIMI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