塑料模具外文文献.docx

塑料模具外文文献.docx

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塑料模具外文文献

Treatingandthemodernmouldmakehighspeed

One,summarizes

1thepresentsituationthatthemouldmakesatpresentandtrend

Themouldisimportanthandicraftequipment,occupiesdecisivepositioninindustriddepartmentssuchasconsumergoods,electricalequipmentelectron,automobile,aircraftfabrication.Themouldisimportanthandicraftequipment,occupiesdecisivepositioninindustriddepartmentssuchasconsumergoods,electricalequipmentelectron,automobile,aircraftfabrication.Industrialproductpartroughprocess75%,thefinishmachining50%andplasticpart90%willbecompletedfromthemould.TheChinesemouldmarketdemandalreadyreachesscaleof500hundredmillionyuanatpresent.Theautomobilemould,theannualgrowthratecoveringpieceofmouldespeciallywillexceed20%;Alsopromptbuildingmaterialmoulddevelopment,variousheterotypematerialthemould,wallsurfaceandfloormouldbecomenewmouldgrowthpoint,plasticdoorsandwindowsandplasticdrain-pipeincreasetoexceeding30byintheupcomingseveralyears%;Thehomeappliancemouldannualgrowthratewillexceed10%;TheITindustryyearincreases%speedequallyexceeding20,theneedtothemouldaccountsfor20ofmouldmarketplace%.2004annualChinesemachinetoolsimplementsindustryoutputvalue

willcontinuetoincrease.Ourcountrymouldfabricationmarketpotentialisenormous.Thebasisdatacounts,inrecentyears,ourcountrymouldyeargrossoutputvaluereaches3billionU.S.dollar,entranceexceeds1billionU.S.dollar,exceed100millionU.S.dollaroutlet.Increasebyfrom25%toincreaseto200550%of1995.Theexpertforetellsthatabroad:

Asiaportionbeingoccupiedbyinmouldfabricationinthewholeworld,willfrom25%toincreaseto200550%of1995.

Chinesemouldindustryhasbeenexpandingbyleapsandbounds,hasformedeastChinaandtwobigSouthChinabases,andhasexpandedgraduallyarrivingatotherprovince.In2002（Shandong,Anhui,Sichuan）in1996~,mouldmanufacturingindustryoutputvalueannualaveragegrowth14%,growsby25%in2003.In2003ourcountrymouldoutputvalueis45billionRMB.Thegrossproductplaceoccupiestheworldthe3rd,exportsamouldincreases33.5%comparedtolastyear336,800,000U.S.dollar.But,contentslowourcountrytechnologymouldsalreadypileupinexcessofrequirement,verymostsupportofaccurate,complicatedtopgrademouldimports.Everyyeartheentrancemouldexceeds1billionU.S.dollar.Exceed100millionU.S.dollaroutlet.

Precisemouldaccuracyrequiresthat3mums,large-scalemouldsrequirethat8000satisfiedkNagreewellwithmodelforceinjectionmachinerequestin2~;Theminitypemouldneedstherequestsatisfyingthediameter1mmsilentstocktube.Atpresent,adoptquick-cuttingtoproduceamouldalreadybecomingthegeneraltrendthatthemouldmakes,afewmouldshaveproducedamanufacturerinabroad,high-speedmachinetoollargeareahassubstitutedtheelectricsparkmachinetool,quick-cuttinghasimprovedthemouldefficacygreatly.Machinetoolenterpriseaimsatmouldmanufacturingenterprises,sometreatingcentres60%allaboveofthemachinetoolproducingafactorysellstreatingenterprisetoamould.Themouldfabricationenterprisesubstitutingtheelectricsparkfinishmachiningmouldgraduallyinabroadhasadoptquick-cuttingalreadycommonly,quick-cuttinghasproducedamouldalreadybecomingthegeneraltrendthatthemouldmakesgradually,hasimprovedthemouldefficacyandmassgreatly.Adoptquick-cuttingtoreplaceelectricsparkproducingamould,cangetonthestickobviously,improvesmouldaccuracy,lifetimegrowing.

2highspeedprocessesapplicationinmakinginthemould

2.1quick-cuttingmerit:

1）cutterhighrotationrateandthemachinetoolheightenterbegiventoandhighacceleration,improvemetalexcisionrategreatly;

2）quick-cuttingdiminutionscutaforce;

3）quick-cuttingheatmajorpartgenerateheatfromthecuttingsentrainment,workpiecebeingshort;

4）quick-cuttingcutdownvibration,improvetreatingmass;

2.2highspeedtreatingapplytothebeneficialresultthatthemouldprocesses

1）fleetnessroughprocessandhalffinishmachining,improvetreatingefficiency;

2）highspeedhigh-accuracyfinishmachiningreplaceonlyentiretheheightprocessing,indicatingmass,formaccuracyrise,50%,cutsdownrepairamillbyhandthanEDMprocessesapotentiation;

3）cutsthesurfaceprocessingfinalmoldingstiffly,improvesurfacemass,formaccuracy,thetreating（notonlybeingthatsurfaceharshnessislow,andthesurfaceradianceishigh）,beingusedforcomplicatedsurfacehasmoreadvantage;

4）thesurfacelossthatEDMtreatingproduces,improvemouldlife-span20%;

5）processesanelectroderapidlycombiningwiththeCAD/CAMtechnology,especially,theformiscomplicated,thin-wallissimilartoanelectrode.

3adoptquick-cuttingtoprocessamouldneedingtheproblemsolving

Ininthehomeland,sincetheaspectcausesuchasfund,technology,thequick-cuttingapplyingproduceamouldbeintheinitialstagestage.Returnthemachinetool,cutter,handicraftbacktoexistenceaswellassomeproblemofaspectneedstoproceedorderlyothersolve.

Theshortcomingisthatfinishedcostishigh,correctcuttersigmatismhavecomparativelyhighdemand,cannothaveusedbigcutters,needtohavethecomplicatedcomputerprogrammingtechnologytobeusedforsupport,equipmentrunningcostheight.

Two,thehighspeedprocessingamould'sprocessesamachinetool

Mouldfinishmachiningandhardcuttingtreatingrequirethatthenumericalcontrolhigh-speedmachinetool,formboard,modelputuptheprecisionprocessingneed,high-effectnumericalcontrolmachinetooletc.Themouldaimingatproducesalotofmachinetoolenterprise,sometreatingcentres60%allaboveofthemachinetoolproducingafactorysellsenterprisetoamould.

Thefixedassetshaving5billionyuanwithoutexceptionintheupcomingseveralyearsthrowsintomouldindustry,80%isthemachinetoolbuyingamouldprocessequipment,justsayingeveryyearhaving4billionyuanofRMBtobuyJinqieamongthem.

Atpresentaverageourcountrynumericalcontrolmachinetoolutilizationratioapproximately20%,thehigh-speedmachinetoolutilizationratio3~5%.Also,mouldenterprisehastheunitsuitabletobuyahigh-speedmachinetool,complieswith6000~40000rmp'stohave.

1high-speedmachinetooltechnologyparameterdemands

Processcentrechiefaxishigh-power,highrotationrate,satisfiedrudefinishmachining;Thefinishmachiningmouldwantstoneedtoreach15000~20000rmplikethecutter,themachinetoolwithminordiameter.Generally,thechiefaxisrotationratemachinetoolunder10000rpmcancarryoutroughprocessandhalffinishmachining,cannotreachthefinishmachiningaccuracy;

Havenowaytoreach400theabovem/mincuttingspeed.

2fivescrollsofmachinetoolsapplicationincreasesatrend

1）treatingrouteisnimble,thesurfaceformiscomplicated;

2）treatingrangeisbig,thevarioustypemouldsuitableprocesses;

3）cutslife-spanofconditioneasytocutdowncutterwear,toraiseacutter,;

3thesoftwaresbuyingCAD/CAMandhigh-speedmachinetoolsassort

Onthegroundsofthemachinetool,majorpartcounting,havingseveralbillionsU.S.dollartobeusedtoenterporteveryyear,theelectromachiningmachinetoolandthehigh-speedmachinetoolneedtoimport.

Three,quick-cuttingmouldcuttertechnology

Quick-cuttingprocessesthecutterneedingallocatingproperquick-cutting.Progressingprocessingcuttermaterial'sinhighspeedhasurgeddevelopmentofhighspeedtreating.Thecutter,knifeedgeheadquarterandhightenacitybasegatheringcrystalstrengtheningtheceramicscutterbeingabletobeusedgivingconsiderationtohighhardnessexperienceandobservecarbidealloycoatingbecomingpossibility.Gatherthecrystalcubenitridingboron（PCBN）bit,whosehardnessmayamountto3500~4500HV.Gathercrystalmiamond（PCD）it'shardnessbutamountto6000~10000HV.GermanySCS,JapanMitsubishi（magicalsteel）andSumitomo,

SwitzerlandShanteweike,USAKennaareinrecentyearsswiftlylargewaitforthefamousabroadcuttercompanytosuccessivelyhavedebutedtherespectivequick-cuttingcutter,notonlycutterhavingaveragestructuralsteelofquick-cutting,theceramicscutterstillhavingdirectquick-cuttingofenergyquenchinghardsteeliswaitingforaneffecttosurpassthehardcutter,especiallythecoatingcutterappearsallofasudden,bringingintoplayinquenchinghalffinishmachiningandfinishmachiningofhardsteel.Newcuttermaterialandcuttertechnologyappearingalreadymakethebottleneckproblemthathighspeedhasprocessednolongerbeabletoappearonthecutter.

But,expensiveentrancecutterpricealsoblocksquick-cuttingmouldkeyfactor.

Abovetocometosayingthecutterandthecutterholderaccelerationreach3gsthesort,thecuttercircularrunoutneedstobesmallerthan0.015mm,buttheknifelengthisunablegreaterthan4timescuttersdiameter.TherealityaccordingtoSANDVIKcompanyhascounted,thecarbidealloyhasstoodonintheentiretyusingcarbonnitridingtitanium（TICN）coatingwhenmillingcutters（58HRC）carryouthighspeedbrightmetalchopping,roughprocesscutterlinearspeedhasbeen100m/minabout,whoselinearspeedhasexceededbut280m/minwhenfinishmachiningandmicrostoning.Suchdemandstocuttermaterial（includethehardness,tenacity,redhardnesskeeptheform（includerowofcrumbsfunction,surfaceaccuracy,dynamicbalancesexetc.（cuttingthefunctio