移動(dòng)式龍門銑床的外文翻譯

1、DesignofMovableGantryCNCMillingMachineZHANGJianAbstract:thispaperdescribesthencmillingroller,theoveralldesignandanalysesthebilateralsuper-modulusgearpairofdrivingmechanismofthemainpointsofdesign,installationguidesurfaceoftheXaxisisintroducedinthispaperKeywords:mobilencmillingdesignThismachineismainl

2、yusedformetalpartsoftheplaneandinclinedplanework.Ithasenoughrigidity,MillingheadadoptsmillingheadinTaiwan,Millingheadwithflexible,Spindlemotorisfrequencyconversionmotor.Itcanundertakesteplessspeed,Ensureaccuracyofmachinetoolsandmachiningprecisionhasgoodstability,Thismachineisofhighefficiencyandexerc

3、ise,Forconvenience,makethedrivemorereliableandconvenientinmaintenance,lessconsumption,beautifulmodelling,etc,widelyusedinmechanicalmanufacturingindustry.ThispaperdescribedthemobileCNCmillingreferstolongmenframeworkVerticalmillingmovement.Thebiggestadvantageofmillingrolleris(1)Machinecoveranareaofana

4、reasmall.WorkbenchmobileLongmenmillingmachine,completemachinemustbehigherthanverticalstrokelengthtwotimes.However,WorkbenchmobileLongmenmillingmachine,Thelengthofsideframewhichisfabricatedaccordingtoaddonlylongitudinaltravelwidth,Thedynamicresponseofthemachineisgood.WorkbenchmobileLongmenmillingmach

5、ineadoptsfixedtable.Thewholecastoutwithbed,LongmenframeworkoflongitudinalmotionDrivetorqueequivalentunchanged,ItisnotbecauseofbearingtheweightoftheworkpiecechangesChange,soastoensuretheaccuracyandperformanceofthemachinetool.TheindependentdesignmobilencLongmenmilling(FIG1)hasbeenaspecialmachinetouse.

6、Itcansatisfythelargecastings,steelpartsboringandmilling,drilling,etcmultipleoperationprocess.Itisrightmillinghead,Italsocanprocessthe4sideofworkpiece.ThegoalofthemaindesignparameterssuchasLongmenmillingunder:workbencharea1800mmx4000mm,ThetravelforXaxis:4000mmThetravelforYaxis:2000mmThetravelforZaxis

7、:750mm,Spindlepower18.5KW,Eachaxisrapidfederate10m/min.Figure1Mobilencmilling1.MechanicalpartsdesignThebedincludeBed,Slide,Longmenframespindlebox,ThreeaxistodrivemechanicalpartsandrelatedCNCservopart,Now,Thedesignprocessisemphasizedasfollows:Thebedisthebasicdesignwork,Thesizeofthebedofthedesignaffec

8、tsthecompletemachinedesign.AndtherationalityofthedesignofdirectlyaffectthewholeMachinestiffness.Thecross-sectionshapeforthebedliken,(FIG2)Theplaneisworkingonabedofmesadesignhas9Tshapedgroove.FortheconvenienceofbedandworkingmesaofpuredigimageTprocessing,groovetankcompletely,Therightandlefttwoconcerni

9、ngthedesignhasalongnarrowswingplane.Itisusedtolinearrollingguidevice,Theauthorputrailsurfacedesigninthetwosidebed.Themainconsiderationofforcetransmissiondirectionsandunloading,Becausethebedwillbedragonframeworkofgravity,cuttingforceandthegravityoftheworkpiece,Thisdesigncandirectlyintothegravityoflon

10、gmenframeworktomachinetools,andBedonlysufferthegravityoftheworkpiece.ThebedbythefollowingbasicwallthicknessdetermineBythefollowingformula.C=1/4(2L+B+H)Type:C,L,Bisrespectivelyforbedlength,widthandheightofsizeandunitforthem.Basedonequivalentsizec,Consultingrelevantform,Takethebasicwallthicknessis38mm

11、,Figure2Shapeofconcerningthecross-sectionSpindleboxadopts300mmx300mmsectiondesign.Thetorsionbendingcapacityarestronger.SpindlegearboxesUSEStwogearsGearslidingspeed-changemechanism.Itcanadaptroughmachiningrequirements.Spindleunitadoptsfoursupportingstructure,AheadthreegroupsofAnglecontactballbearingu

12、sedtowithstandcuttingforce.Spindleendadeepgrooveballbearingsareusedtounloading,ThatisnotoftheSlidinggearsoftheadditionalmoment.Longmenframeworkusedintegralframewhichisfabricatedaccordingtothedesignconcept,Ittookaboutbeamandcolumndesignintoawhole.Althoughmakecastingandassemblyadjustingdifficulty,thew

13、holeframeworkoflongmenrigidbetter,moreimportantistoslidehaveassembledspindlebox,etc.Slideisdesignedintheframewhichisfabricatedaccordingtothegeometricaldimensionsandspindlebox,Accordingtothecenteraxisoftheguidebarasfaraspossibletofacefortheprinciple,TheZaxisandthedriverinstallationpositionindesign,ef

14、fectivelyreducetheweightoftheslide.Designedtodriveintotheideaasfollows,TheXaxistodriveUsethebilateralsuper-modulusgearpairaggravatingpreloadinglinearrollingguidevice.XaxisandYaxisusesbigdiameterballscrewpreloadingvicehardenedguide.Railslidingpartsattachedengineeringplastics,Itavoidslowwhencrawlingph

15、enomenon,andguidethedesignisinclinedwithadjustabledevice.Thismachinedesignmakethewholemachinetocoordinateperformance.Theaxisofthefeedingspeedandforcegettheoptimalmatching.DuetothelongitudinalaxismachinemovementX,andismovinglongmenframeworkoflongmenframeworkweighed10T,sothelinearrollingguiderailstomu

16、stchoose.Becausetheballrailsystemofsmallfrictioncoefficient,verysuitableforlongmenframeworkofmovingrigidityrequirement.Guidethesliderchooseonetype,eachslideblockdynamicloadcanachieve10t.Consideringthesafetycoefficient,everyguideinstallation2slider.Longmenframeworkforthedriverbilateralsuper-modulusge

17、arpair(seechart2),feedmovementby3input,throughtwoinclinedgearmotorshaft/andaxisto2,andthenbytwogear-andtodriverack.Andthuspromotelongmenframew3thehelicalgearaxlespiralofthetwooppositedirections.ThroughthespringintheshaftonathreeaxialforceF,makethehelicalgeartraceofaxialmovementproducedat1and2andaxia

18、lshaftintheoppositedirectionAngleofsmall,round4and5)respectively,thegeartoothsurfacewithtworack,eliminatethegap.1.2.3-axis4.5-RackFigure3Bilateralsuper-modulusgearpairSpindleboxandverticalmotionZaxisadoptsballscrewassemblytransmission.Becauseofthismachineisnothighspeedmillingmachine,theZaxisofthefee

19、dingsystemforservomotorthroughtheratioof4forparallelaxissetthangearboxdrivestheballscrewrotation.InthedesignofspecialattentiontotheZaxisofsafetyproblems.Firstchoosetheservomotorwithelectromagneticbrake,secondintheballscrewwithatwo-wayoverrunningclutch,preventballnutsrotationcausedspindleboxmechanica

20、lprolapse.Ofcourse,inordertoprotectthez-axisfeedinstitutions,butalsointheaccuracywithtwobalanceontheslidecylinders.BalanceQ,etcThequalityofpartsinspindlebox85%.SpindleboxaroundmovefortheYaxis,inordertoguaranteetheprecisionYaxis,andonlybytheirlevelofballscrewandaxialforce,servomotorandtheballscrewstr

21、aightleague.Theauthorselectsthecouplingwithoverloadprotectiondevice,intheoverloadwhencouplingautomatically.2SelectionofCNCsystemTheSiemensnumericalcontrolsystemisadopted,becausethissystem840Dprovideslongmenshaftsynchronizationfunction.Usethisfunction,themachinecantodragonsDoorframeforshaft(into)no,X

22、2clampsitsX1mechanicaldeviationofdisplacement.Theactualvaluecanexerciseforcomparison,eventhesmallestdeviationcanbecorrected,andthereforeimprovetheaccuracyoftheXaxismovement3EpilogueTheauthorfinally,accordingtotheprofessionalmachinepartsmanufacturerstoprovidedesignsamplesdesignwillreachthetwicetheres

23、ultwithhalftheeffort.InThedesignprocess,theauthorofCNCsystem,spindleunit,gearbox,super-modulusgearandballscrewguideetc.Accordingtothesampleofempiricalformulas,notonlyshortendesigntime,makethehigherreliability.Atthesametimewemustpaygreatattentiontothetimelydesignmachinetools,suchastheapplicationofthr

24、ee-dimensionalsoftwarecomponentsimmediatelyaftertheestablishmentsketchesfor3dmodel,throughtheassemblyinterference,machineavoidcollisionsoccurwheninassemblyWadereworkphenomenon.翻譯移動(dòng)式數(shù)控龍門銃床的總體設(shè)計(jì)張堅(jiān)摘要：闡述了移動(dòng)式數(shù)控龍門銃床的總體設(shè)計(jì)，并重點(diǎn)分析了雙邊齒輪齒條副驅(qū)動(dòng)機(jī)構(gòu)的設(shè)計(jì)要點(diǎn)，對(duì)X軸的導(dǎo)軌安裝面作了介紹。關(guān)鍵詞：移動(dòng)式數(shù)控龍門銃床設(shè)計(jì)本文所述的移動(dòng)式數(shù)控龍門銃床是指龍門框架作縱向移動(dòng)的龍門銃床。移動(dòng)

25、式龍門銃床的最大優(yōu)點(diǎn)是：(1)機(jī)床占地面積小。工作臺(tái)移動(dòng)式龍門銃床，整機(jī)長(zhǎng)度必須兩倍于縱向行程長(zhǎng)度，而移動(dòng)式龍門銃床的整機(jī)長(zhǎng)度只需縱向行程加上龍門架側(cè)面寬度即可。圖1移動(dòng)式數(shù)控龍門銃床(2)機(jī)床的動(dòng)態(tài)響應(yīng)好。移動(dòng)式龍門銃床采用的是固定工作臺(tái)，一般與床身整體鑄出，龍門框架縱向運(yùn)動(dòng)的驅(qū)動(dòng)力矩等值不變，不會(huì)因工件的承載重量的改變而變化，從而保證了加工精度和機(jī)床的響應(yīng)性能。筆者獨(dú)立設(shè)計(jì)的移動(dòng)式數(shù)控龍門銃床(圖1),現(xiàn)已作為專機(jī)投入生產(chǎn)應(yīng)用，能滿足大型鑄件、鋼件的鏈、銃、鉆等多工序加工；配上直角銃頭，還可對(duì)工件的個(gè)側(cè)面進(jìn)行加工。由于設(shè)計(jì)思想正確，配套零部件質(zhì)量過(guò)關(guān)，該機(jī)床各項(xiàng)指標(biāo)均已達(dá)到數(shù)控龍門銃床相關(guān)

26、國(guó)家標(biāo)準(zhǔn)的要求。該龍門銃床的主要設(shè)計(jì)參數(shù)如下：工作臺(tái)面積為1800mmX4000mmX軸行程為4000mmY由行程為2000mmZ軸行程為750mm主軸功率18.5KW各軸快速進(jìn)給為10m/min。1.機(jī)械部分設(shè)計(jì)整機(jī)分為床身、龍門架、滑臺(tái)、主軸箱、三軸進(jìn)給驅(qū)動(dòng)機(jī)構(gòu)機(jī)械部分及相關(guān)數(shù)控伺服部分?，F(xiàn)把設(shè)計(jì)過(guò)程中的重點(diǎn)闡述如下：床身是本次設(shè)計(jì)工作的基礎(chǔ)，床身的尺寸設(shè)計(jì)影響著對(duì)整機(jī)的設(shè)計(jì)，而且設(shè)計(jì)的合理性直接影響到整機(jī)的剛度。床身的截面形狀為n形（圖1）。床身的上平面即工作臺(tái)面設(shè)計(jì)有9條T形槽，為方便床身工作臺(tái)面和T形槽的精刨加工，槽完全貫通。床身的左、右兩下腳各設(shè)計(jì)有一個(gè)狹長(zhǎng)平面，用來(lái)安放滾動(dòng)直線導(dǎo)

27、軌副。筆者把導(dǎo)軌面設(shè)計(jì)在床身的兩下側(cè)，主要是考慮力的傳遞方向與卸荷問(wèn)題。因床身會(huì)受到龍門框架的重力、切削力和工件的重力，這樣的設(shè)計(jì)可使龍門框架的重力直接傳入到機(jī)床的基礎(chǔ)上，而床身只受到工件的重力。床身的基本壁厚由以下公式初定：C=1/4（2L+B+H）式中：L.B.H分別為床身的長(zhǎng)、寬、高尺寸，單位為mi根據(jù)當(dāng)量尺寸C,查閱相關(guān)表格（略），取基本壁厚為38mm主軸箱采用.300mmX300mm面設(shè)計(jì)，其抗扭抗彎能力更強(qiáng)。主軸變速箱采用兩檔滑移齒輪變速機(jī)構(gòu)，可適應(yīng)粗精加工需求。主軸單元采用4支承結(jié)構(gòu)，前面三組角接觸球軸承用來(lái)承受切削力，主軸尾部一個(gè)深溝球軸承用來(lái)卸荷，使主軸不受到滑移齒輪產(chǎn)生的附加力矩的影響。龍門框架采用的是整體龍門架的設(shè)計(jì)概念，即把橫梁與左右立柱設(shè)計(jì)成一體，雖然使鑄造和裝配調(diào)整時(shí)的難度加大，但整體龍門框架的剛性更好，更重要的是使主軸箱、滑臺(tái)等部件有了裝配基準(zhǔn)。圖2床身的截面盤狀滑臺(tái)的設(shè)計(jì)是在龍門架和主軸箱的幾何尺寸確定后，按照主軸的中心盡量貼近橫梁上的導(dǎo)軌面為原則，并把落由驅(qū)動(dòng)安裝位置設(shè)計(jì)在滑臺(tái)上，有效地減輕了滑臺(tái)的重量。設(shè)計(jì)進(jìn)給驅(qū)動(dòng)機(jī)構(gòu)的構(gòu)思如下：X軸的進(jìn)給驅(qū)動(dòng)機(jī)構(gòu)采用雙邊齒輪齒條副加重預(yù)壓滾動(dòng)直線導(dǎo)軌副，Ytt與Xtt采用大直徑預(yù)壓滾珠絲杠副加硬導(dǎo)軌副，且導(dǎo)軌滑動(dòng)部分貼有工程塑料，避免低速時(shí)產(chǎn)生爬行現(xiàn)象，而且導(dǎo)軌部分設(shè)計(jì)有