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外文翻译--安装有许多对角裂缝零件的一维纵扭振动转换器 英文版.pdf

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外文翻译--安装有许多对角裂缝零件的一维纵扭振动转换器 英文版.pdf

ULTRASONICS38200072–76WWWELSEVIERNL/LOCATE/ULTRASONEDIMENSIONALLONGITUDINAL–TORSIONALVIBRATIONCONVERTERWITHMULTIPLEDIAGONALLYSLITTEDPARTSJIROMARUTSUJINO,TETSUGIUEOKA,KENICHIOTODA,ATSUSHIFUJIMIFACULTYOFENGINEERING,KANAGAWAUNIVERSITY,YOKOHAMA2218686,JAPANABSTRACTFORINCREASINGTHEAVAILABLEVIBRATIONVELOCITYOFTHEONEDIMENSIONALLONGITUDINAL–TORSIONALVIBRATIONCONVERTER,ANEWTYPEOFCOMPLEXVIBRATIONCONVERTERWITHMULTIPLESLITTEDPARTSINSTALLEDINTHEPOSITIONSAVOIDINGLONGITUDINALNODALPOSITIONSALONGTHECONVERTERFORDECREASINGTHEMAXIMUMVIBRATIONSTRESSLEVELATTHEVIBRATIONNODALPARTWASSTUDIEDTHEFREEENDOFTHECONVERTERVIBRATESINANELLIPTICALORCIRCULARLOCUSCOMPLEXVIBRATIONSYSTEMSWITHELLIPTICALTOCIRCULARORRECTANGULARTOSQUARELOCICANBEAPPLIEDEVECTIVELYFORVARIOUSHIGHPOWERAPPLICATIONS,INCLUDINGULTRASONICWELDINGOFMETALORPLASTICS,ULTRASONICWIREBONDINGOFIC,LSIANDELECTRONICDEVICES,ANDALSOULTRASONICMOTORSTHECONVERTERWITHMULTIPLESLITTEDPARTSWASIMPROVEDINTHEVIBRATIONSTRESSLEVELANDTHEQUALITYFACTORCOMPAREDWITHTHECONVERTERWITHSINGLESLITTEDPART2000ELSEVIERSCIENCEBVALLRIGHTSRESERVEDKEYWORDSCIRCULARVIBRATIONLOCUS;COMPLEXVIBRATION;COMPLEXVIBRATIONULTRASONICWELDING;LONGITUDINAL–TORSIONALVIBRATIONCONVERTER;ULTRASONICMOTOR;ULTRASONICPLASTICWELDING;VIBRATIONCONVERTERWITHDIAGONALSLITS1INTRODUCTIONVIBRATIONCHARACTERISTICSBECAUSETHEMAXIMUMVIBRATIONSTRESSALONGTHECONVERTERISDECREASEDINCOMPARISONTOTHECONVERTERWITHASLITTEDPART,ANDTHEMAXIMUMCOMPLEXVIBRATIONSYSTEMSWITHELLIPTICALTOCIRCULARVIBRATIONAMPLITUDEOFTHECONVERTERINCREASESSIGNIFIORRECTANGULARTOSQUARELOCIAREEVECTIVEFORVARIOUSCANTLYVIBRATIONLOCUS,ANDVIBRATIONVELOCITYANDPHASEHIGHPOWERAPPLICATIONSAONEDIMENSIONALLONGITUDIDISTRIBUTIONSALONGTHECONVERTERWEREMEASUREDBYTWONAL–TORSIONALVIBRATIONCONVERTERWITHASLITTEDPARTATLASERDOPPLERVIBROMETERSTHENEWTYPECONVERTERSLONGITUDINALVIBRATIONNODALAREADRIVENBYALONGITUDIWEREUSEDFORULTRASONICPLASTICWELDINGANDULTRASONICNALVIBRATIONSYSTEMISUSEFULFORHIGHPOWERAPPLICAMOTORSTIONSINCLUDINGULTRASONICWELDINGOFVARIOUSMATERIALS,THEMAXIMUMAVAILABLEVIBRATIONVELOCITYINCREASEDULTRASONICWIREBONDINGOFBONDINGOFIC,LSIANDSIGNIFICANTLYWITHTHENEWCONVERTERWELDINGCHARACTERELECTRONICDEVICES,ANDALSOULTRASONICMOTORS1–4AISTICSOFPLASTICMATERIALSWEREIMPROVEDBYTHECOMPLEXNEWTYPEOFCONVERTERWITHMULTIPLESLITTEDPARTS,FORVIBRATIONCONVERTERIMPROVINGTHEVIBRATIONCHARACTERISTICSANDINCREASINGTHELONGITUDINALANDTORSIONALVIBRATIONAMPLITUDESTHEAVAILABLEVIBRATIONVELOCITYOFTHECONVERTER,ISOFA15MMDIAMETEROFANEWCONVERTERFORANULTRASONICSTUDIEDTHESLITTEDPARTSAREINSTALLEDINMULTIPLEPOSIMOTORINCREASEDTOABOUT12MMPEAKTOZEROVALUETIONSAVOIDINGLONGITUDINALNODALPOSITIONSALONGTHEFROM6MMWITHAFORMERCONVERTERUNDERTHESAMECONVERTERFORDECREASINGTHEMAXIMUMVIBRATIONSTRESSDRIVINGVOLTAGE60VRMSAT55KHZLEVELATTHEVIBRATIONNODALPARTUSINGMULTIPLESLITTEDTHECONVERTERWITHMULTIPLESLITTEDPARTSWASFOUNDPARTS,THEMAXIMUMVIBRATIONSTRESSALONGACONVERTERTOBEEVECTIVEFORIMPROVINGTHEVIBRATIONCHARACTERISTICSDECREASESANDTHEQUALITYFACTORINCREASES,ANDTHEANDINCREASINGTHEAVAILABLECOMPLEXVIBRATIONVELOCITYMAXIMUMVIBRATIONAMPLITUDEINCREASESSIGNIFICANTLYATTHESAMEDRIVINGVOLTAGE5THECONVERTERHASSUPERIOR2CONFIGURATIONSOFVIBRATIONCONVERTERSCORRESPONDINGAUTHORTEL81454815661;CONFIGURATIONSOFTWOEXAMPLESOFTHEVIBRATIONFAX81454917915EMAILADDRESSTSUJINOCCKANAGAWAUACJPJTSUJINOCONVERTERS20MMINDIAMETERAND79MMINLENGTH,WITH0041624X/00/SEEFRONTMATTER2000ELSEVIERSCIENCEBVALLRIGHTSRESERVEDPIIS0041624X9900175473JTSUJINOETAL/ULTRASONICS38200072–764COMPLEXVIBRATIONULTRASONICPLASTICWELDING41VIBRATIONCHARACTERISTICSOFACOMPLEXVIBRATIONCONVERTERSFIG2SHOWSTHERELATIONSHIPBETWEENDRIVINGFREQUENCYANDLONGITUDINALANDTORSIONALVIBRATIONVELOCITYOFACOMPLEXVIBRATIONSYSTEMWITHTHEVIBRATIONCONVERTERATHEDRIVINGVOLTAGEISKEPTCONSTANTAT20VRMSLONGITUDINALANDTORSIONALVIBRATIONVELOCITIESHAVEMAXIMUMVALUESATDIVERENTFREQUENCIESATAROUND263AND264KHZTHEELLIPTICALLOCUSISOBTAINEDATTHEFREEEDGEOFTHECONVERTERTORSIONALANDRADIALVIBRATIONVELOCITYDISTRIBUTIONSAT268KHZALONGACOMPLEXVIBRATIONCONVERTERWITHFIG1VARIOUSONEDIMENSIONALLONGITUDINALTOTORSIONALVIBRATIONDOUBLESLITTEDPARTSAANDBARESHOWNINFIG3ONECONVERTERSWITHDOUBLESLITTEDPARTSTORSIONALVIBRATIONVELOCITYNODALPARTISWITHINALEFTSLITTEDAREA,ANDTHEVIBRATIONVELOCITIESHAVEMAXIMUMVALUESATTHEFREEEDGETHERADIALVIBRATIONVELOCITYDISTRIBUTIONALONGASLITTEDPARTSTHATWEREINSTALLEDAVOIDINGALONGITUDINALCOMPLEXVIBRATIONCONVERTERWITHDOUBLESLITTEDPARTSNODALPART,ARESHOWNINFIG1THECYLINDRICALLONGITUDINAL–TORSIONALVIBRATIONCONVERTERS,MADEOFALUMINUMALLOYJISA7075B,HADTWOSLITTEDPARTSONBOTHSIDESOFALONGITUDINALVIBRATIONNODALPARTATITSCIRCUMFERENCETHECONVERTERSWEREDRIVENBYALONGITUDINALVIBRATIONSOURCEVARIOUSCONVERTERSWITHADIVERENTANDBTHESAMEANGLEDIAGONALLYSLITTEDPARTSWEREMADEINTHETRIALSTHEVIBRATIONCONVERTERPARTHAD18DIAGONALSLITSOF45OR135,10MMWIDTHAND05MMWIDTHWERECUTALONGITSCIRCUMFERENCEUSINGANELECTROSPARKINGMACHINETHESLITDEPTHWASALTEREDFROM10TO30MMTHEFREEEDGEPARTOFTHECONVERTERVIBRATEDLONGITUDINALLYANDTORSIONALLYANDVIBRATEDINANELLIPTICALLOCUSFIG2TORSIONALANDRADIALVIBRATIONVELOCITYDISTRIBUTIONSALONGCOMPLEXVIBRATIONCONVERTERSAANDBDRIVINGVOLTAGE20VRMS3VIBRATIONCHARACTERISTICSOFTHECONVERTERSWITHTWOSLITTEDPARTSTHEFREEADMITTANCELOOPSOFTHETOTALVIBRATIONSYSTEMSWITHTHECONVERTERSFIG1AANDBWEREMEASUREDTHEQUALITYFACTORANDMOTIONALADMITTANCE,|YMO|,OFTHEVIBRATIONSYSTEMWITHACONVERTERWITHDIVERENTANGLESLITTEDPARTSAANDTHESAMEANGLESLITTEDPARTSBWEREABOUT600AND30MSUNDERWELDINGCONDITIONSOFTWO10MMTHICKPOLYPROPYRENESHEETSWITHASTATICPRESSUREOF890KPATHEADMITTANCELOOPSOFTHEVIBRATIONSYSTEMWITHTHECONVERTERSSHOWSINGLECIRCULARSHAPESBECAUSETHERESONANCEFREQUENCIESOFTHELONGITUDINALANDTORSIONALVIBRATIONSARECLOSETHEQUALITYFACTORSANDMOTIONALADMITTANCESOFTHEBOTHFIG3RELATIONSHIPBETWEENDRIVINGFREQUENCY,ANDLONGITUDINALANDSYSTEMSARELARGEELLIPTICALLOCIWEREOBTAINEDATTHETORSIONALVIBRATIONVELOCITYOFACOMPLEXVIBRATIONSYSTEMWITHAVIBRATIONCONVERTERADRIVINGVOLTAGE20VRMSFREEEDGESOFTHECONVERTERS74JTSUJINOETAL/ULTRASONICS38200072–76AISALSOSHOWNINFIG3DOTTEDLINEARADIALANDDOUBLESLITTEDPARTSINTHECASEOFTHECONVERTERWITHSINGLESLITTEDPART,THESLITTEDPARTISPOSITIONEDATVIBRATIONVELOCITYMAXIMUMPOSITIONMEANSALONGITUDIANODALPOSITIONOFTHELONGITUDINALVIBRATIONALONGTHENALVIBRATIONNODALPOSITION,ANDTHELONGITUDINALNODALCYLINDRICALLONGITUDINAL–TORSIONALVIBRATIONCONVERTERSPOSITIONISPOSITIONEDBETWEENTWOSLITTEDPARTSTHEONTHECONTRARY,INTHECASEOFTHECONVERTERWITHTWOTWOSLITTEDAREASEXISTOUTOFTHELONGITUDINALNODALSLITTEDPARTS,THESLITTEDPARTSAREPOSITIONEDAVOIDINGPOSITIONWHERETHEVIBRATIONSTRESSHASAMAXIMUMVALUETHELONGITUDINALVIBRATIONNODALPOSITIONTHECONVERTERALONGTHECONVERTERWITHDIAGONALSLITSISDRIVENBYALONGITUDINALVIBRATIONSOURCEOFTWOPIEZOELECTRICCERAMICLEAD–ZIRCON–TITA42WELDINGCHARACTERISTICSOFCOMPLEXVIBRATIONNATE;PZTDISKS,15MMINDIAMETERAND50MMINULTRASONICPLASTICWELDINGTHICKNESSTHEVIBRATIONCONVERTERSLITTEDPARTHAS12DIAGONALSLITSOF45OR135AND05MMINWIDTHAND10THERELATIONSHIPBETWEENWELDINGTIME,SPECIMENOR5MMINLENGTH,CUTBYANELECTROSPARKINGMACHINEDEFORMEDTHICKNESSATTHEWELDEDPARTSANDTHEWELDALONGTHECIRCUMFERENCEOFTHESECONVERTERSFABRICATEDSTRENGTHOFTHELAPPEDPOLYPROPYRENESHEETS10MMINFROMALUMINUMALLOYJISA7075BTHESLITDEPTHSOFTHICKNESS,WELDEDUSINGA27KHZCOMPLEXVIBRATIONTHE15MMDIAMETERCONVERTERAREALTEREDFROM15TOSYSTEMWITHACONVERTERAANDB,ISSHOWNINFIG435MMTHEFREEEDGEOFTHECONVERTERVIBRATESLONGITUTHEWELDSTRENGTHSOBTAINEDBYTHESYSTEMWITHCONDINALLYANDTORSIONALLYANDVIBRATESINANELLIPTICALLOCUSVERTERAARELARGERTHANTHOSEWITHACONVERTERBTHEPZTLONGITUDINALVIBRATIONTRANSDUCERS,ALONGITHEWELDINGTIMEREQUIREDBECOMESSHORTERUSINGTHETUDINALVIBRATIONRODWITHAFLANGEFORSUPPORTINGTHEVIBRATIONSYSTEMAWITHALARGERTORSIONALVIBRATIONMOTORANDASLITTEDCYLINDERARECLAMPEDBYACONNECTINGCOMPONENTTHEDECREASEINSPECIMENDEFORMEDTHICKBOLTTHEDRIVINGPARTOFTHECONVERTERANDTHEROTORNESSATTHEWELDEDPARTSROUGHLYCORRESPONDSTOTHEPARTARESTATICALLYPRESSEDUSINGCORNEDDISKSPRINGSBYOBTAINEDWELDSTRENGTHSPECIMENSWEREWELDEDINAACENTERBOLTANDNUTSTHEDRIVINGSURFACESOFTHESHORTERWELDINGTIMEUSINGACOMPLEXVIBRATIONSYSTEMCONVERTERJISA7075BANDTHEROTORSTEELSKD61ORCOMPAREDWITHALONGITUDINALVIBRATIONSYSTEMCOMPLEXSK4TEMPEREDAREGROUNDTOBEFLATANDSMOOTHUSINGVIBRATIONISEVECTIVEFORULTRASONICWELDINGOFPLASTIC1500–2000MESHPOLISHINGPOWDERMATERIALSASFORMETALMATERIALS52VIBRATIONCHARACTERISTICSOF15MMDIAMETERULTRASONICMOTORS5ULTRASONICMOTORSWITHALONGITUDINAL–TORSIONALCONVERTERTHELONGITUDINALANDTORSIONALVIBRATIONAMPLITUDESATTHEFREEEDGEOFTHESECONVERTERSWEREMEASUREDBY51CONFIGURATIONOFULTRASONICMOTORSTWOLASERDOPPLERVIBROMETERSWHENTHEDRIVINGFREQUENCYWASALTEREDTHESECONVERTERSHAVENEARRESOTHECONFIGURATIONSOFTHEULTRASONICMOTORSANDNANCEFREQUENCIESOFTHELONGITUDINALANDTORSIONALVIBRATIONCONVERTERS,15MMINDIAMETER,ARESHOWNINVIBRATIONSSIMILARTOFIG2THELARGESTLONGITUDINALFIG5FIG5AANDBSHOWTHECONFIGURATIONSOFVIBRATIONAMPLITUDESOFTHECONVERTEROFSINGLEANDTWO15MMDIAMETERMOTORSUSINGACONVERTERWITHSINGLESLITTEDPARTSWITHOUTAROTORPARTWEREABOUT6AND12MMPEAKTOZEROVALUEATFREQUENCIESOF50–55KHZTHELARGESTLONGITUDINALVIBRATIONAMPLITUDESOFTHESECONVERTERSWITHAROTORPARTAREABOUT3AND9MMATFREQUENCIESNEARTO55KHZTHELARGESTVIBRATIONAMPLITUDESOFACONVERTERWITHDOUBLESLITTEDPARTSAREABOUTTWOTOTHREETIMESCOMPAREDWITHTHEAMPLITUDESOFACONVERTERWITHSINGLESLITTEDPART53VIBRATIONLOCIATTHEDRIVINGSURFACEOFTHECONVERTERINTHESECASES,THELONGITUDINALVIBRATIONISPARTIALLYCONVERTEDTOTORSIONALVIBRATIONATTHESLITTEDPARTS,ANDTHECYLINDERPARTOFTHECONVERTERVIBRATESLONGITUDINALLYANDTORSIONALLYTHEVIBRATIONLOCUSATTHEFREEEDGEISDETERMINEDBYTHEVIBRATIONPHASEDIVERENCEBETWEENFIG4RELATIONSHIPBETWEENWELDINGTIME,DEFORMEDWELDMENTHEIGHTTHESEVIBRATIONSVIBRATIONLOCIATTHEDRIVINGSURFACESANDWELDSTRENGTHOFTHELAPPEDPOLYPROPYRENESHEETS10MMINTHICKOFLONGITUDINAL–TORSIONALCONVERTERSWEREMEASUREDNESS,WELDEDUSINGA27KHZCOMPLEXVIBRATIONSYSTEMWITHACONVERTERAANDBUSINGTWOLASERDOPPLERVIBROMETERS20MHZTHAT75JTSUJINOETAL/ULTRASONICS38200072–76FIG5CONFIGURATIONSOF15MMDIAMETERULTRASONICMOTORSUSINGALONGITUDINAL–TORSIONALVIBRATIONCONVERTERWITHSINGLESLITTEDPARTAANDDOUBLESLITTEDPARTSBDETECTLONGITUDINALANDTORSIONALVIBRATIONSINDEPENLENGTHOFTHEULTRASONICMOTOROF15MMDIAMETERINTHEDRIVINGFREQUENCY551KHZWITHOUTAROTORANDDENTLYTHEVIBRATIONLOCUSISSHOWNONADIGITALMEMO

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