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THEDESIGNOFSTEELPIPECHAMFERINGLIANGCHENINSTITUTEOFMECHANICALENGINEERINGTIANJINUNIVERSITYOFTECHNOLOGY,TIANJIN,300384,CHINAEMAILCHENLIANG0107126COMABSTRACTITISNECESSARYTODESIGNTHEADVANCEDSTEELPIPECHAMFERINGTOADAPTTHEENDCHAMFERINGOFBIGBOREANDTHICKWALLSTEELPIPECONSEQUENTLY,BASEDONTHEHOMEANDABROADCHAMFERINGMACHINESTRUCTURE,THEARTICLEDEALSWITHLAYOUTPLAN,KNIFEDISH,DYNAMICCUTTINGHEADDESIGN,CHUCKINGSYSTEMTYPE,DEVELOPMENTSITUATION,ANDONTHEBASISOFANALYZINGANDCOMPARINGOFTHEADVANTAGE,THEARTICLEPUTSFORWARDTOCOMBINETHEUSEOFRATIONALPROCESSINGMODEKEYWORDSTEELPIPECHAMFERINGSTRUCTUREDESIGNIINTRODUCTIONTHISPAPERFOCUSESONTHERESEARCHOFCHAMFERINGOFBIGBOREANDTHICKWALLSTEELPIPEACCORDINGTOTHEREQUIREMENTSOFOURACTUALNEEDS,THECHAMFERINGHASREASONABLESTRUCTURES,RUNSSTABLY,OPERATIONSEASILY,MONITORSINTUITIONALLY,QUICKNESS,ACCURACYANDCANREALIZETHECHAMFERINGFORVARIOUSBARANDSHAPETHEDESIGNEDCHAMFERINGNOTONLYWOULDPUTUPTHEPRODUCTIVITY,BUTALSOWOULDHASTHEVALUEOFPRACTICALANDUSINGEXTENSIVELYANDCHAMFERINGSTRUCTURALDESIGNSOLVESTHEPROBLEMFORBIGBOREANDTHICKWALLSTEELPIPEWITHOUTINTERFERINGTHENORMALPRODUCTIONABOUTPRODUCTIONLINECORRESPONDING,THEPRECISIONANDSURFACEQUALITYWOULDBEIMPROVEDTHISTHESISMAINLYDESCRIBESITSOPERATINGPRINCIPLEANDEXPERIENCECHAMFERINGSTRUCTURALDESIGNATHOMEANDABROADIITHEDESIGNONLAYOUTPLANATPRESENT,THECHAMFERINGMAINLYHASTWOTYPICALLAYOUTMODES,ONEKINDWASTHETWOFIXEDANDDISLOCATIONARRANGEBEDBOX,TWOENDSOFWHESTEELPIPEISCHAMFEREDINORDER,ANDTHEOTHERISTHECASETHATTWOENDSOFTHESTEELPIPEISCHAMFEREDTOGETHERWHENBEDBOXESMOVEWITHABREASTOFAXISYUHUAZHANGINSTITUTEOFMECHANICALENGINEERINGTIANJINUNIVERSITYOFTECHNOLOGY,TIANJIN,300384,CHINATHECHAMFERINGFORFIXEDBEDBOXHASTHEADVANTAGEOFSIMPLIFIEDEQUIPMENT,EASYMAINTENANCEANDLIGHTERINWEIGHT,FORDRIVINGDEVICEBETWEENLATHEBEDANDBOXESISDISPENSED,THEWAYCANALSOBEUSEDTHATONEENDOFSTEELPIPEISCHAMFEREDINBYUSINGABEDBOX,ANDTHENOTHERENDISCHAMFEREDWHENTHEPIPEISTURNEDTHESTEELPIPEISCHAMFEREDINORDERASARESULT,PRODUCTIVITYISRELATIVELYLOWINADDITION,ONLYONECHUCKINGSYSTEMISEXISTEDWHENSTEELPIPEISCHAMFERED,BUTTHESTEELPIPEISEIGHTTWELVEMETERSINLENGTHANDCENTREOFGRAVITYISLOCATEDASEATONTHEBACK,ASARESULT,THESTABILITYOFTHESTEELTUBEANDCHAMFERINGQUALITYCANTBEEFFECTIVELYGUARANTEEATTHESAMETIME,WITHTHEINCREASINGWALLTHICKNESSANDDIAMETEROFTHESTEELPIPEDIAMETER,THECUTTINGFORCEINCREASESRAPIDLYANDVIBRATIONOFSTEELPIPEINTENSIFIES,THESEWOULDSERIOUSLYAFFECTTHEQUALITYOFSTEELPIPECHAMFERINGANDEASILYCAUSEPLAYINGKNIFEPHENOMENONTHEREFOREWAYSOFCHAMFERINGMACHINEISUSEDFORSTEELPIPETHATTHINWALL,SMALLDIAMETERANDTHEQUALITYDEMANDISNOTHIGHTHELAYOUTONBEDMOVEDBOXESCANALSOBEDIVIDEDINTOMOBILEBEDBOXANDSTEELPIPEONTRANSLATIONANDSTEELPIPEONROLLING,AMONGTHEM,CHAMFERINGMACHINESTRUCTUREONTHEMOBILEBEDBOXANDSTEELPIPEONTRANSLATIONISMORECOMPLEXATPRESENT,THECHAMFERINGMACHINESTRUCTUREONTHEMOBILEBEDBOXANDSTEELPIPEONROLLINGISUSEDDOMESTICLARGEANDMEDIUMSIZEDSUBMERGEDARCWELDINGTUBE,THEADVANTAGETHATPRODUCTIONEFFICIENCY,MOBILEPRECISIONANDCUTTINGPRECISIONAREHIGHERCANMEETWITHREQUIREMENTSOFPIPESTEELTUBECHAMFERING,DESPITETHEEQUIPMENTQUALITYANDSTRUCTUREARECOMPLEXANDPRECISIONLATHEBEDNEEDSHIGHMAINTENANCEREQUIREMENTSTHEFOREIGNCHAMFERINGMACHINESTRUCTUREONTHEMOBILEBEDBOXANDSTEELPIPEONTRANSLATIONISASSHOWNINFIGURE1,29069781457703218/11/26002011IEEEDESPITEOFCOMPLEXSTRUCTURE,THISSTRUCTUREHASHIGHPRECISIONTHISSTRUCTURECANSIGNIFICANTLYREDUCESTEELTUBEBRUISINGBYPRODUCINGSTEELTUBEROLLINGANDFALLTOSURFACEDEFECTSANDTHEPITNOISEPOLLUTION,INADDITIONTOTHEADVANTAGEOFTHECHAMFERINGMACHINESTRUCTUREONTHEMOBILEBEDBOXANDSTEELPIPEONROLLINGTRANSMISSIONWAYOFTHEBEDLATHEANDBEDMODEISOPTIMALLYDESIGNEDTHEQUALITYOFCHAMFERINGMACHINESTRUCTUREWILLREDUCEAROUND43THANDOMESTICSTEELROLLINGCHAMFERINGMACHINE,ANDREDUCECOSTMOREOVER,THESTRUCTURECANEFFECTIVELYSOLVETHEPROBLEMSABOUTCHAMFERINGFORBIGBOREANDTHICKWALLSTEELPIPETOSUMUPTHEABOVEARGUMENTS,CHAMFERINGMACHINESTRUCTUREONTHEMOBILEBEDBOXANDSTEELPIPEONTRANSLATIONSHOULDBEGAVEPRIORITYTOWHENLAYOUTPLANISDESIGNEDFIGURE1CHAMFERINGMACHINESTRUCTUREONTHEMOBILEBEDBOXANDSTEELPIPEONTRANSLATIONIIITHECOPYINGFLOATINGTOOLHOLDERDUETOBIGBOREANDTHICKWALLSTEELPIPEHASTHECHARACTERISTICSOFLARGEDIAMETERHEAVYQUALITYANDTHESTEELPIPEISNOTEASYTOMOVEGENERALLYTHECOPYINGFLOATINGTOOLHOLDERONCHAMFERINGEQUIPMENTISUSEDFORPIPEENDGROOVEPROCESSINGCUTTINGTOOLSMOVEMENTISGENERALLYDIVIDEDINTOAXIALMOVEMENT,ROTARYMOTIONANDRADIALMOTIONWHENTHEENDFACEISCUTBYCUTTERDUETOTHEEXISTOFASYMMETRICALTHICKWALLANDLARGEERRORONTHICKWALLROUNDNESS,AFLOATINGKNIFEISUSEDWITHINTERNALWALLCURVEFLOATINGTOHASANEVENPROCESSINGBREACHTHEPRINCIPLEISTHATONEWAYMAKESTHEKNIFEMOVESIMILARCURVEWITHINTERNALWALLOFSTEELPIPETHROUGHTHEROLLERIMITATEASSHOWNINFIGURE2FIGURE2ENLARGEMENTOFINTERNALWALLROUNDNESSOFSTEELPIPEINORDERTOREALIZETHEFUNCTIONOFTHECOPYINGFLOATING,THECOPYINGFLOATINGTOOLHOLDERISREALIZEDBYTHECOMPRESSIONSPRING,ANDSWALLOWTAILORIENTATIONANDLEVERAGEDGUIDEORIENTEDSTRUCTURESHAPEORIENTATIONISUSEDGENERALLYASSTEERINGMECHANISM,WHENCOPYINGFLOATINGTOOLHOLDERCUTSBYSWALLOWTAILORIENTATION,MODELINGROLLERALWAYSCONTACTSWITHINTERNALWALLOFSTEELPIPEUNDERTHEACTIONOFCOMPRESSIONSPRINGWHENTHERADIUSOFTHEWORKPIECEREDUCES,THEPRESSEDMODELINGROLLERFORCESTOTOOLHOLDERALONGSWALLOWTAILORIENTED,THETOOLHOLDERSPRINGSAXIALCOMPRESSIONWHENTHERADIUSOFTHEWORKPIECEINCREASES,THEPRESSUREOFMODELINGROLLERREDUCES,SPRINGBOUNCES,THETOOLHOLDERISPUSHEDTOTHEWORKPIECE,ANDROLLERSCONTACTSWITHINTERNALWALLOFTHEWORKPIECEDIAGRAMMATICSKETCHISSHOWNINFIGURE3THECURVEBETWEENMOVEMENTSOFTOOLHOLDERANDPROCESSINGOFSTEELTUBEWALLISSIMILAR,THISWILLMAKESURETHEUNIFORMITYOFENDFACEFIGURE3DIAGRAMMATICSKETCHESFORFLOATINGTOOLHOLDERSTRUCTUREONLEVERAGEDGUIDEORIENTED,SPRINGANDGUIDERAILSTEERINGMECHANISMAREINSTALLED2907ONBOTHSIDESOFTHESHAFTTHELEVERTYPEISFORMEDTHESTRUCTUREISLARGERTHANSWALLOWTAILORIENTATIONFORFLOATINGTOOLHOLDERSTRUCTUREONSWALLOWTAILORIENTATION,SPRINGSUITISFIXEDEMPENNAGEOFSWALLOWTAILORIENTATION,THESTRUCTUREHASTHEADVANTAGEOFWELLKNITANDFLEXIBLESLIDINGWITHOILLUBRICATIONSYSTEM,BUTMAINTENANCEISINCONVENIENTINUSEPLUGIRONINSWALLOWTAILISVULNERABLEANDTHESUTURESHOULDBESUREINTHEMAINTENANCELEVERAGEDGUIDEORIENTEDSTRUCTUREISFLEXIBLEANDDONTNEEDTOBEFREQUENTLYDISASSEMBLINGFORMAINTENANCE,WITHBEARINGINROTARYSTRUCTUREANDWITHNEEDLEINORIENTEDSTRUCTURETHEPRINCIPLEOFTWOSCHEMESISTHESAMEWORKPIECEISFIXEDANDKNIFEISROTATING,TOOLCARRIERISFLOATINGINTHEPROCESSOFCUTTING,COPIEDROLLERMAKESTHEDESIGNOFTHESTEELTUBEDATUMCONSISTENTWITHPROCESSBENCHMARKANDKEEPTHESTEELTUBEENDUNIFORMAFTERCUTTING,THISWILLELIMINATETHEINFLUENCEOFGROOVEEVENNESSALONGDIAMETERONWELDEDPIPEANDMAKEPROCESSINGOFSLOPINGENDBRIGHT,CLEAN,EVENANDCANREACHHIGHERGROOVEPRECISIONDIAMETERSCOPEOFTHEWELDEDPIPECANBEUPTO21916096MMAND,THERANGEOFTHEWALLTHICKNESSIS40191MMATTHESAMETIMETHEFLOATINGTOOLHOLDERISINSTALLEDINTHEKNIFEDISHFORMOFDAYSLOTSTHROUGHTHEBALLSCREWANDNUTFOURKNIFERESTSCANBEINSTALLEDINCUTTERTHETOOLSCANREALIZETHEFUNCTIONONCUTTINGPOURWELDINGGROOVES,INTERIORANGLE,FLATFACEDEBURRINGANDDIFFERENTPROCESSINGREQUIREMENTSCANBEMEET,THEADVANTAGEOFTHECOPYINGFLOATINGTOOLHOLDERISWELLSHOWNIVDYNAMICCUTTINGHEADDESIGNCHAMFERINGTOOLINSTALLEDDYNAMICCUTTINGHEADOFCHAMFERINGISMAJOREXECUTIVEBODYTOCOMPLETETHECHAMFERINGOFSTEELPIPE,WHETHERQUALITYOFTHEDEVICEDESIGNORNOTWILLDIRECTLYINFLUENCETHEPERFORMANCEOFCHAMFERINGMACHINEFORSHAPEERRORUNCERTAINSTRAIGHTNESS,CIRCULARDEGREE,PHYSICALDIMENSIONEXISTSONEACHPIECESOFSTEEL,CUTTINGHEADISGENERALDESIGNEDFORDYNAMICSHAPETOENSURETHEPROCESSQUALITYOFPIPEFLOATINGWHEELTYPEONPROCESSINGEQUIPMENTOFENDFACEISGENERALLYUSEDFORDOMESTICCHAMFERINGMACHINE,CUTTINGTOOLSCUTGYRATEWITHFLOATINGWHEEL,ANDTHEWHEELREVOLVESAPPRISINGINTERNALWALLOFTHESTEELPIPEFINALLY,THECHAMFERINGQUALITYKEEPSFROMTHECONFIGURATIONANDPOSITIONTOLERANCESOFINFLUENCEFORCHAMFERINGOFBIGBOREANDTHICKWALLSTEELPIPE,DYNAMICCUTTINGHEADNEEDTOBEDONEGREATLY,THISWILLCAUSEVIBRATIONOFCUTTINGKNIFEANDPLAYKNIFEWHENCHAMFERINGIFRADIALFLOATTYPECUTTINGHEADDEVICEISADOPTEDONCHAMFERINGMACHINE,ASSHOWNINFIGURE4,DYNAMICCUTTINGTOOLANDCUTTINGARECOMBINEDINTOONEKNIFEPIECEISINSTALLEDDIRECTLYONTHEDYNAMICCUTTINGHEAD,THEDISTANCEBETWEENTHEFIXEDCHAMFERDISHANDCUTTINGPOINTISSHORTEN,THEPHENOMENONOFPLAYSKNIFEISGREATLYREDUCED,VIBRATIONOFTHECUTTINGHEADISALSOREDUCEDFINALLY,CHAMFERINGQUALITYISIMPROVEDFORKNIFEBLOCKISUSEDINSTEADOFTOOLS,AWIDESWORDISJUSTCHANGEDFORBIGBOREANDTHICKWALLSTEELPIPEGOODCHAMFERINGQUALITYISGET,ASSHOWN,THEDESIGNOFRADIALFLOATTYPECUTTINGHEADDEVICEISREASONABLEANDCONVENIENTALTHOUGHSTRUCTUREISRELATIVELYCOMPLEX,THEFEEDVELOCITYOFMOTORDRIVEISADJUSTEDINTUITIVELY,FEEDQUANTITYISWELLCONTROLLED,ANDTHISISAPPLIEDTOAUTOMATICCHAMFERINGFORBIGBOREANDTHICKWALLSTEELPIPEFIGURE4RADIALFLOATTYPECUTTINGHEADDEVICEVCONCLUSIONMANYPLANSCANBEUSEDINTHEDESIGNOFCHAMFERINGMACHINESTRUCTUREON