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外文翻译---移动式数控龙门铣床的总体设计.doc

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外文翻译---移动式数控龙门铣床的总体设计.doc

附录348附录3外文文献DesignofMovableGantryCNCMillingMachineZHANGJianAbstractthispaperdescribesthencmillingroller,theoveralldesignandanalysesthebilateralsupermodulusgearpairofdrivingmechanismofthemainpointsofdesign,installationguidesurfaceoftheXaxisisintroducedinthispaperKeywordsmobilencmillingdesignThismachineismainlyusedformetalpartsoftheplaneandinclinedplanework.Ithasenoughrigidity,MillingheadadoptsmillingheadinTaiwan,Millingheadwithflexible,Spindlemotorisfrequencyconversionmotor.Itcanundertakesteplessspeed,Ensureaccuracyofmachinetoolsandmachiningprecisionhasgoodstability,Thismachineisofhighefficiencyandexercise,Forconvenience,makethedrivemorereliableandconvenientinmaintenance,lessconsumption,beautifulmodelling,etc,widelyusedinmechanicalmanufacturingindustry.ThispaperdescribedthemobileCNCmillingreferstolongmenframeworkVerticalmillingmovement.Thebiggestadvantageofmillingrolleris1Machinecoveranareaofanareasmall.WorkbenchmobileLongmenmillingmachine,completemachinemustbehigherthanverticalstrokelengthtwotimes.However,WorkbenchmobileLongmenmillingmachine,Thelengthofsideframewhichisfabricatedaccordingtoaddonlylongitudinaltravelwidth,Thedynamicresponseofthemachineisgood.WorkbenchmobileLongmenmillingmachineadoptsfixedtable.Thewholecastoutwithbed,LongmenframeworkoflongitudinalmotionDrivetorqueequivalentunchanged,ItisnotbecauseofbearingtheweightoftheworkpiecechangesChange,soastoensuretheaccuracyandperformanceofthemachinetool.燕山大学本科生毕业设计(论文)TheindependentdesignmobilencLongmenmilling(FIG1)hasbeenaspecialmachinetouse.Itcansatisfythelargecastings,steelpartsboringandmilling,drilling,etcmultipleoperationprocess.Itisrightmillinghead,Italsocanprocessthe4sideofworkpiece.ThegoalofthemaindesignparameterssuchasLongmenmillingunderworkbencharea1800mm4000mm,ThetravelforXaxis4000mmThetravelforYaxis2000mmThetravelforZaxis750mm,Spindlepower18.5KW,Eachaxisrapidfederate10m/min.Figure1Mobilencmilling1.MechanicalpartsdesignThebedincludeBed,Slide,Longmenframespindlebox,ThreeaxistodrivemechanicalpartsandrelatedCNCservopart,Now,ThedesignprocessisemphasizedasfollowsThebedisthebasicdesignwork,Thesizeofthebedofthedesignaffectsthecompletemachinedesign.AndtherationalityofthedesignofdirectlyaffectthewholeMachinestiffness.Thecrosssectionshapeforthebedlike∏,FIG2Theplaneisworkingonabedofmesadesignhas9Tshapedgroove.FortheconvenienceofbedandworkingmesaofpuredigimageTprocessing,groovetankcompletely,Therightandlefttwoconcerning附录350thedesignhasalongnarrowswingplane.Itisusedtolinearrollingguidevice,Theauthorputrailsurfacedesigninthetwosidebed.Themainconsiderationofforcetransmissiondirectionsandunloading,Becausethebedwillbedragonframeworkofgravity,cuttingforceandthegravityoftheworkpiece,Thisdesigncandirectlyintothegravityoflongmenframeworktomachinetools,andBedonlysufferthegravityoftheworkpiece.ThebedbythefollowingbasicwallthicknessdetermineBythefollowingformula.C1/42LBHTypeC,L,Bisrespectivelyforbedlength,widthandheightofsizeandunitforthem.Basedonequivalentsizec,Consultingrelevantform,Takethebasicwallthicknessis38mm,Figure2ShapeofconcerningthecrosssectionSpindleboxadopts300mm300mmsectiondesign.Thetorsionbendingcapacityarestronger.SpindlegearboxesUSEStwogearsGearslidingspeedchangemechanism.Itcanadaptroughmachiningrequirements.Spindleunitadoptsfoursupportingstructure,AheadthreegroupsofAnglecontactballbearingusedtowithstandcuttingforce.Spindleendadeepgrooveballbearingsareusedtounloading,ThatisnotoftheSlidinggearsoftheadditionalmoment.燕山大学本科生毕业设计(论文)Longmenframeworkusedintegralframewhichisfabricatedaccordingtothedesignconcept,Ittookaboutbeamandcolumndesignintoawhole.Althoughmakecastingandassemblyadjustingdifficulty,thewholeframeworkoflongmenrigidbetter,moreimportantistoslidehaveassembledspindlebox,etc.Slideisdesignedintheframewhichisfabricatedaccordingtothegeometricaldimensionsandspindlebox,Accordingtothecenteraxisoftheguidebarasfaraspossibletofacefortheprinciple,TheZaxisandthedriverinstallationpositionindesign,effectivelyreducetheweightoftheslide.Designedtodriveintotheideaasfollows,TheXaxistodriveUsethebilateralsupermodulusgearpairaggravatingpreloadinglinearrollingguidevice.XaxisandYaxisusesbigdiameterballscrewpreloadingvicehardenedguide.Railslidingpartsattachedengineeringplastics,Itavoidslowwhencrawlingphenomenon,andguidethedesignisinclinedwithadjustabledevice.Thismachinedesignmakethewholemachinetocoordinateperformance.Theaxisofthefeedingspeedandforcegettheoptimalmatching.DuetothelongitudinalaxismachinemovementX,andismovinglongmenframeworkoflongmenframeworkweighed10T,sothelinearrollingguiderailstomustchoose.Becausetheballrailsystemofsmallfrictioncoefficient,verysuitableforlongmenframeworkofmovingrigidityrequirement.Guidethesliderchooseonetype,eachslideblockdynamicloadcanachieve10t.Consideringthesafetycoefficient,everyguideinstallation2slider.Longmenframeworkforthedriverbilateralsupermodulusgearpairseechart2,feedmovementby3input,throughtwoinclinedgearmotorshaft/andaxisto2,andthenbytwogearandtodriverack.Andthuspromotelongmenframew3thehelicalgearaxlespiralofthetwooppositedirections.ThroughthespringintheshaftonathreeaxialforceF,makethehelicalgeartraceofaxialmovementproducedat1and2andaxialshaftintheoppositedirectionAngleofsmall,round4and5respectively,thegeartoothsurfacewithtworack,eliminatethegap.

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