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附录348附录3外文文献DesignofMovableGantryCNCMillingMachineZHANGJianAbstract:thispaperdescribesthencmillingroller,theoveralldesignandanalysesthebilateralsuper-modulusgearpairofdrivingmechanismofthemainpointsofdesign,installationguidesurfaceoftheXaxisisintroducedinthispaperKeywords:mobilencmillingdesignThismachineismainlyusedformetalpartsoftheplaneandinclinedplanework.Ithasenoughrigidity,MillingheadadoptsmillingheadinTaiwan,Millingheadwithflexible,Spindlemotorisfrequencyconversionmotor.Itcanundertakesteplessspeed,Ensureaccuracyofmachinetoolsandmachiningprecisionhasgoodstability,Thismachineisofhighefficiencyandexercise,Forconvenience,makethedrivemorereliableandconvenientinmaintenance,lessconsumption,beautifulmodelling,etc,widelyusedinmechanicalmanufacturingindustry.ThispaperdescribedthemobileCNCmillingreferstolongmenframeworkVerticalmillingmovement.Thebiggestadvantageofmillingrolleris(1)Machinecoveranareaofanareasmall.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.ThegoalofthemaindesignparameterssuchasLongmenmillingunder:workbencharea1800mm×4000mm,ThetravelforXaxis:4000mmThetravelforYaxis:2000mmThetravelforZaxis:750mm,Spindlepower18.5KW,Eachaxisrapidfederate10m/min.Figure1Mobilencmilling1.MechanicalpartsdesignThebedincludeBed,Slide,Longmenframespindlebox,ThreeaxistodrivemechanicalpartsandrelatedCNCservopart,Now,Thedesignprocessisemphasizedasfollows:Thebedisthebasicdesignwork,Thesizeofthebedofthedesignaffectsthecompletemachinedesign.AndtherationalityofthedesignofdirectlyaffectthewholeMachinestiffness.Thecross-sectionshapeforthebedlike∏,(FIG2)Theplaneisworkingonabedofmesadesignhas9Tshapedgroove.FortheconvenienceofbedandworkingmesaofpuredigimageTprocessing,groovetankcompletely,Therightandlefttwoconcerning附录350thedesignhasalongnarrowswingplane.Itisusedtolinearrollingguidevice,Theauthorputrailsurfacedesigninthetwosidebed.Themainconsiderationofforcetransmissiondirectionsandunloading,Becausethebedwillbedragonframeworkofgravity,cuttingforceandthegravityoftheworkpiece,Thisdesigncandirectlyintothegravityoflongmenframeworktomachinetools,andBedonlysufferthegravityoftheworkpiece.ThebedbythefollowingbasicwallthicknessdetermineBythefollowingformula.C=1/4(2L+B+H)Type:C,L,Bisrespectivelyforbedlength,widthandheightofsizeandunitforthem.Basedonequivalentsizec,Consultingrelevantform，Takethebasicwallthicknessis38mm，Figure2Shapeofconcerningthecross-sectionSpindleboxadopts300mm×300mmsectiondesign.Thetorsionbendingcapacityarestronger.SpindlegearboxesUSEStwogearsGearslidingspeed-changemechanism.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,TheXaxistodriveUsethebilateralsuper-modulusgearpairaggravatingpreloadinglinearrollingguidevice.XaxisandYaxisusesbigdiameterballscrewpreloadingvicehardenedguide.Railslidingpartsattachedengineeringplastics,Itavoidslowwhencrawlingphenomenon,andguidethedesignisinclinedwithadjustabledevice.Thismachinedesignmakethewholemachinetocoordinateperformance.Theaxisofthefeedingspeedandforcegettheoptimalmatching.DuetothelongitudinalaxismachinemovementX,andismovinglongmenframeworkoflongmenframeworkweighed10T,sothelinearrollingguiderailstomustchoose.Becausetheballrailsystemofsmallfrictioncoefficient,verysuitableforlongmenframeworkofmovingrigidityrequirement.Guidethesliderchooseonetype,eachslideblockdynamicloadcanachieve10t.Consideringthesafetycoefficient,everyguideinstallation2slider.Longmenframeworkforthedriverbilateralsuper-modulusgearpair(seechart2),feedmovementby3input,throughtwoinclinedgearmotorshaft/andaxisto2,andthenbytwogear-andtodriverack.Andthuspromotelongmenframew3thehelicalgearaxlespiralofthetwooppositedirections.ThroughthespringintheshaftonathreeaxialforceF,makethehelicalgeartraceofaxialmovementproducedat1and2andaxialshaftintheoppositedirectionAngleofsmall,round4and5)respectively,thegeartoothsurfacewithtworack,eliminatethegap.

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