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外文翻译--焊接电弧传感器的研究现状和对未来的展望.doc

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外文翻译--焊接电弧传感器的研究现状和对未来的展望.doc

THERESEARCHANDFUTUREPROSPECTSOFTHEARCSENSORWELDSEAMTRACKINGISTOENSURETHATTHEPREMISEOFQUALITYANDWELDINGAUTOMATION,ANDSENSORSARETHEBASISFORACHIEVINGTHISPREREQUISITEWELDINGSENSORACCORDINGTOTHEDIFFERENTWAYSOFSENSINGADDITIONALSENSORSCANBEDIVIDEDINTOTWOMAJORCATEGORIESANDARCSENSORSMOSTOFTHETRADITIONALSEAMTRACKINGISANADDITIONALTYPEOFSENSOR,FOREXAMPLE,TOUCHSENSORS,ELECTROMAGNETICSENSORSANDAVARIETYOFOPTICALSENSORS,SUCHSENSORSISTHESENSORANDTHECOMMONPROBLEMSISTHESEPARATIONOFTHEARC,THESENSORDETECTIONPOINTARCWITHACERTAINDISTANCEAWAY,ALARGEARCINTHEWELDINGSEAMWILLAFFECTTRACKINGPERFORMANCETHEARCSENSORUSINGTHEARCWELDINGPROCESS,THECURRENTWAVEFORMORTHECHANGEOFARCVOLTAGEWAVEFORMSOBTAINEDARCCENTREHASDEVIATEDFROMTHESEAMASTHESENSORINFORMATIONANDREALTIME,TRACKINGWELLARCSENSORISITSBIGGESTADVANTAGEOFTHEANTIARC,HIGHTEMPERATUREANDSTRONGMAGNETICFIELDSARESTRONG,ANDITISALWAYSCONSISTENTWITHTHEOVERALLARC,SIMPLESTRUCTURE,LOWCOST,ATPRESENT,ARCWELDINGSENSORASAMEANSOFSENSORSMUCHNATIONALATTENTION,MANYFOREIGNWELDINGEQUIPMENTRESEARCHANDMANUFACTURINGORGANIZATIONSAREWORKINGTODEVELOPTHISAREAEARLYSTARTOFTHESTUDYOFINDUSTRIALCOUNTRIES,HAVEDEVELOPEDAVARIETYOFARCSCANFORMSSUCHASDOUBLEWIRETIE,SWINGANDROTATIONOFTHEARCSENSOR,SUITABLEFORSUBMERGEDARCWELDING,TIGANDMIG/MAGWELDINGMETHODS,SUCHASDIFFERENT,ANDSOMEHAVEBEENUSEDINWELDINGPRODUCTIONMANYCOUNTRIESONTHEPRODUCTIONOFARCWELDINGROBOTEQUIPPEDWITHSWINGARCSENSORTRACKINGDEVICE1CLASSIFICATIONOFARCSENSOR11SWINGSCANNINGARCSENSORSWINGARCSCANNINGISCURRENTLYTHEMOSTWIDELYUSEDSENSOROFAWELDINGARCSENSOR,WHICHNEEDSASWINGARCSENSORDEVICE,INTHEHORIZONTALDIRECTIONOFTHEWELDSEAMTRACKINGBACKANDFORTHANDACHIEVEUSEDINARCWELDINGROBOTSENSORSDONOTNEEDTOSWINGONASWINGDEVICE,DRIVENBYTHEROBOTARMFORHORIZONTALSWINGTOTORCHHOWEVER,THEIMPACTOFSTRUCTURALFACTORSBYROBOTS,ROBOTBEATFREQUENCYOF10HZISGENERALLYLESSASSHOWNINFIGURE1AINTHEHIGHSPEEDARCWELDINGANDWELDLARGECASES,THETRACKINGPERFORMANCEWILLBEAFFECTEDMKODAMAINVENTEDANELECTROMAGNETICHIGHSPEEDSWINGARCSENSOR,THESENSORONBOTHSIDESOFTHISARCHASAPERMANENTMAGNETANDEXCITINGCOIL,WHENTHEEXCITATIONCOILOFTHEDCCURRENTTHROUGHACERTAINFREQUENCY,THECONDUCTIVERODSWINGWILLPRODUCEACERTAINFREQUENCYTOACHIEVESEAMTRACKINGTHISHIGHSPEEDSWINGARCSENSORGENERALLYCANBEATFREQUENCYADJUSTABLEBETWEEN040HZ,04MMADJUSTABLESWING,THEMAXIMUMWELDINGSPEED400MM/SECITFEATURESSMALLSIZE,LESSWEIGHT1KG,THESTRUCTURESHOWNINFIGURE1B12DOUBLEWIREPARALLELARCSENSORTHEARCSENSORUSINGTWOSEPARATEPARALLELARCWELDINGONTHEWORKPIECE,THEWELDINGWIREAROUNDTHETWOCURRENTVOLTAGEDIFFERENCEBETWEENTHEPROVISIONOFTWOELECTRICARCWELDINGHASDEVIATEDFROMTHECENTERLINEOFINFORMATION,THUSCANBEREALIZEDSEAMTRACKINGACCORDINGTOTHETWOARCPARAMETERSANDCOMPARETHEDIFFERENCEBETWEENTHEREFERENCEVALUECANALSOBEACHIEVEDBETWEENTHETIPANDTHESURFACEDISTANCEADJUSTMENTTHISSENSINGMETHODISTHEUSEOFARCSTATICCHARACTERISTICPARAMETERSCHANGEASTHESENSORSIGNAL,USETHESAMETWOPARAMETERSWEREINDEPENDENTLOOPPOWERPARALLELGROOVEWELDING,TORCHSTRUCTUREMORECOMPLEX,THEREARECERTAINDIFFICULTIESINIMPLEMENTATION,SOTHEUTILITYONRESTRICTED13HIGHSPEEDROTATINGARCSENSORSCANTHEARCSENSORTOROTATETHEARCINSTEADOFTHESWINGARC,THEROTATIONFREQUENCYUPTO100HZTWENTIETHCENTURY,THEEIGHTIES,NKKCORPORATIONOFJAPANHASINVENTEDAROTATINGARCSENSOR,ANDAPPLIEDTOTHENARROWGAPWELD,THEPRINCIPLESHOWNINFIGURE2CONDUCTIVERODASTHECONEOFTHEBUS,AROUNDTHECONEAXISOFROTATIONREVOLUTION,ANDNOTCONDUCTINGRODAROUNDITSAXISOFROTATIONROTATION,ANDTHEMAGNITUDEOFCONEMOVEMENTATTHETOPOFASMALLDIAMETEROFTHISSTRUCTUREISTOADJUSTTHESCANNINGCONEANGLEADJUSTMENT,THESENSORNEEDTOUSEAGEARDRIVE,THESTRUCTURELARGE,AFFECTINGTHEACCESSIBILITYOFWELDINGTORCHNKKCORPORATIONOFTHISTECHNOLOGYINSHIPS,BOILERSANDSTRUCTURETOBEAPPLIEDINPRODUCTION,ANDACHIEVEDREMARKABLERESULTSCHKIMKOREAPRODUCEDAHIGHSPEEDROTATINGARCSENSOR,SHOWNINFIGURE3,THESENSORTIPDEPENDONTHEECCENTRICITYTOACHIEVETHEARCOFTHEROTATINGTIPOFTHEECCENTRICITYISTHEARCRADIUSALTHOUGHITSROTATINGBODYISRELATIVELYSIMPLE,COMPACT,BUTITSHIGHSPEEDROTATION,THEWIRETIPMUSTBEINTHESAMEROTATIONALSPEED,WHICHEXACERBATEDTHETIPOFTHELOSSGERMANYUDILTHEYALSODONEALOTOFHIGHSPEEDROTATINGARCSENSORRESEARCH,PRODUCTIONANDMADETHEARCSEAMTRACKINGSENSORSINCHINA,STARTINGFROMTHELATEEIGHTIES,TOTSINGHUAUNIVERSITY,ACADEMYOFPANJILUANRESEARCHGROUPHEADEDBYTHEROTATINGARCSENSORHASDONEALOTOFRESEARCHWORK,ANDHASMADEVALUABLESCIENTIFICRESEARCHIN1993,TSINGHUAUNIVERSITYDOCTORALSTUDENTINTHEDOCTORALSTUDENTFEESLIAOSWORDJUMPAGRICULTURALRESEARCH,BASEDONTHESUCCESSFULDEVELOPMENTOFAHOLLOWSHAFTMOTORDRIVENROTATINGSCANSENSORS,ANDACCESSTOANATIONALPATENT,SHOWNINFIGURE4THISHIGHSPEEDROTATINGARCSENSORSCANDESIGNUSINGTHEHOLLOWSHAFTTOTHEHOLLOWMOTORASTHEPRIMEMOVER,SKEWCONDUCTIVERODTHROUGHTHEHOLLOWSHAFTMOTORINTHEHOLLOWSHAFTEND,THROUGHTHECOAXIALBEARINGSINSTALLEDALIGNINGCONDUCTIVEROD,THECONDUCTIVERODECCENTRICPOSITIONISZERO,ALIGNINGBEARINGSCANBEINSTALLEDONTHEMOTORSHAFTORHOUSINGTHEBOTTOMOFTHEHOLLOWSHAFT,THEECCENTRICSLEEVEINSTALLEDINTHESHAFT,THEECCENTRICSLEEVEKITINSTALLEDINTHEECCENTRICHOLE,ALIGNINGBEARINGKITINSTALLEDINTHEECCENTRICHOLE,CONDUCTIVERODINSTALLEDINTHEBEARINGHOLEBYTHEECCENTRICITYOFTHEDEPARTMENTCONDUCTINGRODINSIDEANDOUTSIDETH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

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