机械制造加工 外文翻译 外文文献 英文文献 电火花线切割技术.docx

机械制造加工 外文翻译 外文文献 英文文献 电火花线切割技术.docx

《机械制造加工 外文翻译 外文文献 英文文献 电火花线切割技术.docx》由会员分享，可在线阅读，更多相关《机械制造加工 外文翻译 外文文献 英文文献 电火花线切割技术.docx（15页珍藏版）》请在冰点文库上搜索。

机械制造加工外文翻译外文文献英文文献电火花线切割技术

WireEDMTechnology

Abstract:

Withthecontinuousimprovementofmachinerymanufacturingandtheneedforprecisionprocessing,advancedmachinerymanufacturingtechnologyalsomatterofcourse.Inthispaper,EDMwirecuttingtechnologyanditsapplicationanddevelopmenttrends.

Keywords:

Mechanicalmanufacturingtechnology,EDMwirecutting

0.Preface

Manufacturingtechnologyisnotonlyameasureofacountryanimportantindicatoroftheleveloftechnologicaldevelopmentisthefocusofinternationaltechnologicalcompetition.Machinerymanufacturingtechnologyisthestudyofproductdesign,production,processing,manufacturing,sellinganduse,maintenanceservicesandeventhewholeprocessofrecyclingtheengineeringdisciplines,istoenhancequality,efficiency,competitivenessasthegoal,includingmaterialflow,informationflowandenergyflowcompletesystemworks.Withthedevelopmentofsociety,therequirementsforproducts,greatchangeshavetakenplace,askedtodiversespecies,updatetospeed,qualitytohigh-end,theusetobeconvenient,thepricemustbereasonableandappearancetoappearance,higherdegreeofautomation,servicebetter,moreandmoretomeettherequirementsnecessarytoadoptadvancedmachinemanufacturingtechnology.Thecharacteristicsofadvancedmanufacturingtechnology:

（1）itisthe21stcenturytechnology.

（2）itisthetechnologyforindustofmicro-holeslot,narrow,arbitrarycurves,withallowanceofsmall,highprecision,shortproductioncycle,manufacturinghighlighttheadvantagesoflowcost,hasbeenwidelyapprialapplications.（3）itistoharnesstheproductionprocesssystemsengineering.（4）itisatechnologyforglobalcompetition.（5）itistheunityofthethreeelementsofmarketcompetition.

However,EDMwirecuttingtechnologyisoneofadvancedmanufacturingtechnology,mechanicalproductionandwideapplication,itismainlyusedforprocessingavarietyofcomplexshapesandprecisionsmallparts,forexample,Diepunch,die,punchanddie,fixedplate,stripperplateandsoon,formingcutter,model,EDMmachiningthemetalelectrode,avarietyliedinproduction,thecurrentaccountabroadWEDMEDMover60%ofthetotal.ThefollowinghighlightsWEDMmachiningtechnologyandapplicationofprinciplesanddevelopmenttrends.

1.PrinciplesofWEDM

WEDM（WirecutElectricalDischargeMachining,referredtoastheWEDM）,sometimesalsoknownascutting.Thebasicphysicalprincipleisthepresenceoffreepositiveionsandelectronstoaccumulate,andsoontobeionizedtoformaconductivechannel.Inthisstage,acurrentbetweentwoplates,leadtonumerouscollisionsbetweenparticlesoccur,formingaplasma,andsoonincreasedto8000to12,000degreesCelsius,meltingmomentsinthetwoconductors,someofthematerialatthesametime,theelectrodeanddielectricfluidvaporized,formingabubble,therulesanditincreaseduntilthepressureisveryhigh.Andcurrentinterruption,thetemperaturesuddenlydrop,causingthebubbleimplosion,themomentumgeneratedtomeltthematerialthrownintothecrater,andthenthematerialiscorrosivefluidinthedielectricre-condensedintoasmallball,andwasdischargeddielectricfluid.NC-controlledthenthemonitoringandcontrol,servobodies,sothatthephenomenonofuniformdischargetoachievetheprocessingofmaterialstobeprocessed,makingitmeettherequirementsofsizeandshapeprecisionproducts.

Onthisbasis,ourdomesticdevelopmentoftheFastWireSystem（HS）.EuropeandJapan,developedthewalkingsystem（LS）.Themaindifferenceis1,theelectrodewireoftungstenandmolybdenumalloywireused,theforeignuseofbrass.2,byspecificationoftheworkingfluid,demonizedwaterusedabroad.3,takethewireofthespeedof11meters/secondorso,abroadfor3to5m/min.4,werepeattheelectrodewireistouseuntilthebrokenwiretotheforeignisnotreusedafterthewalk.5,ourprecisionthaninothercountries.

Accordingtotheelectrodewirerunningatdifferentspeeds,andprocessingqualityofdifferentWEDMisusuallydividedintothreecategories:

thefirstistogowirespeedWEDM（WEDM-HS）,theelectrodewireforhigh-speedreciprocatingmotion,generallytakethewirespeedof8~10m/s,theelectrodewirecanbereused,thehigherprocessingspeed,rapidwalkingeasilyleadtotheelectrodewireandreversewirejitterwhenthepause,thedeclineinthequalityprocessistheproductionanduseofthemainmachinespecies,butalsoouruniqueWEDMmodel;secondisthelow-speedWEDMwirewalk（WEDM-LS）,theelectrodewireforlow-speedone-waymovement,generallytakethewirespeedislowerthan0.2m/s,nolongerinuseafterdischargeelectrodewire,smooth,uniform,smalljitter,processing,betterquality,buttheprocessingspeedoflowerproductionanduseisthemainforeignmodels.Thethirdclasstogowire-speedWEDMandaccuratelyshouldbecalled"multi-speedtogowire."Isouroriginal,anditsprincipleistocuttheworkpiecerepeatedly,beginningwithfastspeedwiretube,stronghigh-frequencytocut,asthecurrentFastthreadcut,thelastknifewiretubewithaslowerratethanweakhigh-frequencycurrenttorepairlight,therebyenhancingtheprocessingfinish;andwire-speedreduction,theguidewheelandbearinglessjitter,precisionisalsoincreased;Inaddition,thefirstknifetocutthefastestspeed,thencuttingandcuttingtheamountoflightrepairisverysmall,therefore,generallyMitotimetogethercuttheknifethanthespeedwirecutfaster.

Trajectorybasedonthecontroloftheelectrodewireindifferentforms,canbedividedintothreeWEDM:

oneisanimitationofshapecontrol,beforecuttingtheconductingwire,pre-createthesameshapeasthedieandtheworkpiece,theprocessingtimeroughanddiewhiletheworkpiececlampinginthemachinetable,theelectrodewireinthecuttingprocesscloselyforthetrajectorymovesclosetotheedgemode,therebycuttingouttheshapewiththemoldandprecisionpartstothesame;theotheristheopticaltrackingcontrol,theconductingwirecuttingbeforeamplificationunderacertainpercentageofpartdrawingsdepictanopticaltrackingmap,theprocessingmachinewillbeplacedinopticalpatterntracingstage,thestageoftheopticalheadtrackingtofollowtheinklinegraphisalwaystrajectory,thenbymeansofelectrical,mechanicallinkage,thecontrolmachinetablewiththeworkpiecerelativetothemovementoftheelectrodewiretodosimilarfigurestocutoutshapeswiththesamepatterntotheworkpiece;anotheroneisthedigitalprocesscontrol,advanceddigitalautomaticcontroltechnology,thedrivemachineaccordingtothegeometricshapeoftheworkpiecebeforeprocessingparametersbasedonpre-programmedprocessingoftheNCmachiningprogramautomatically,withoutmakinglooklikeboardandneednotdrawEnlargement,twoformsofcontrolthantheprevioushigherprecisionandwiderangeofapplications,morethan95%athomeandabroadWEDMhaveadoptedCNC.DirectDigitalControl（DNC）EDMwirecuttingsystemcanimprovethelevelofautomation,theoverallproductivityandresponsiveness.

2.WEDMCharacteristicsandApplication

Theso-calledEDMwirecutting,istomoveforwardtothefilament（diameterofabout0.5mmorless）tomakeelectrodes,theelectrodewireandthesparkdischargebetweentheworkpieceandsimultaneouslydrivenbytheshapeofthepartsrequiredforprocessing.

2.1.WEDMcharacteristics:

（1）it0.03~0.35mmmetalwiretotheelectrodetool,donotneedtocreateaspecificshapeoftheelectrode.

（2）Althoughtheprocessismainlyflatshapeoftheobject,butinadditiontothedecisionoftheinsideofthewirediameterfootminimumdiameterR（radius+wiredischargegap）suchrestrictions,norestrictions,nocomplicatedatthebeginningofallcanbeprocessed.

（3）contouringlessthantherequiredprocessingcanbeeffectiveinsavingpreciousmaterials.

（4）lossofwirecanbeignored（usinglow-losshigh-speedcuttingawaySiqiepulsepower;slowwalkforacontinuousthreadcuttingone-waywire,alwayskeptintheprocessingareaSijianewelectrode）,highprecision

（5）reliesonatinycomputer-controlledelectrodewiretracesandspacecompensation,whilebothconcaveandconvexmoldprocessing,thegapcanbeadjusted.

（6）byemulsionliquidortotheworkingfluidfromthewater,donothavetoworryaboutfire,dayandnight,noonecanbeacontinuousprocess.

（7）cuttingWEDMcanbedifficulttomachineorcannotbethetraditionalmethodforprocessinghighhardness,highstrength,highbrittleness,high-RenXingandotherconductivematerialsandsemiconductormaterials.

（8）atthebeginningofanycomplexparts,aslongasthepreparationofprocessingcanbeprocessed,andthusverysuitableforsmallbatchproductionofpartsandtestproducts,processing,shortprocessingcycle,applicationflexibility.

（9）withfoursimultaneousaxes,canbeprocessed,thefollowingspecial-shapedbody,theshapedistortionofthebodysurface,suchasvariabletaperandsphericalparts.

（10）process,thetoolsarenotindirectcontactwiththeworkpiece,thereisnosignificantcuttingforce,enablingprocessingoflow-rigidityworkpiece.（11）andEDMascomparedtothewireelectrodeinsteadofformingtheelectrode,eliminatingthemoldingtooldesignandmanufacturingcostselectrode

Usedtoshortentheproductionleadtime.

WEDMthedisadvantageoflowproductivity,andcannotbeblindholemachiningpartsandladdersurfaces.

2.2.WEDMapplications:

（1）Thetrialofnewproducts:

newproductdevelopmentprocessrequiresasinglepiecesamples,useofwirecuttingpartscut