外文翻译--铣床夹具设计特点.doc

MillingfixturedesignfeaturesFirst,themaintypesofmillingmachinefixtureandstructureoftheformMillingfixtureformachiningpartsonthemainplane,groove,keyway,spline,andthegapaswellasfaceshape.Usuallyasaresultofmillingfixturetabletogetherwiththefeedmovement,indifferentwaysaccordingtothefeedmillingfixturecanbedividedintostraight-linefeedtype,feedcircularmodeandrelyonthreetypesoffeed-type.1.Linearfeed-typemillingfixtureThistypeofmillingmachinewiththemost.Fixtureinstalledinthemillingmachinetable,theprocessinginastraightlinewiththefeedtablebywayofmovement.Accordingtotheworkpiecequality,structureandproductionquantitieswillbedesignedasaone-piecefixturepointsmorethantheparallelandmorethanarowfollowedbyclampingofthelinkageapproach,sometimestheuseofsub-degreeinstitutions,bothtoimproveproductionefficiency.2.Circle-typemillingmachinefixturefeedCirclefeedmillinginthecaseofnon-stoploadingandunloadingtheworkpiece,thegeneralisamulti-tasking,andinthemillingmachinerotarytableuse.Thisfixtureiscompactandeasytooperate,mobiletimeandauxiliarytimeoverlapishigh-performancemillingfixture,foruseinhigh-volumeproduction.3.BymoldmillingfixtureThismoduledependsonthemillingmachinewithafixtureusedindedicatedoruniversalmillingmachinesontheprocessingofvariousnon-circularsurface.Ontheroleofmoldistomakeaccesstosupplementarymotorworkpiecetoformaprofilecampaign.Movementbywayofthemainfeedthroughmodecanbedividedintostraight-linemillingmachinefixtureandcircleintothefeedtothetwo.Second,thedesignfeaturesofmillingfixtureAsaresultofmillingandcuttingforcecuttingmoreandmoreintermittentcuttingedge,easyprocessingofvibration,sotheyshouldpayattentiontothedesignofmillingmachinefixture:clampingforcetobesufficientself-lockingandanti-stroke；fixtureinstallationtobeaccurateandreliable,thatis,whentheprocessinginstallationandtheproperuseofdirectionalkeysontheknifedevice；specificfolderhavesufficientstiffnessandstability,thestructuremustbereasonable.Asaresultofmillingandcuttingforcecuttingmoreandmoreintermittentcuttingedge,easyprocessingofvibration,sotheyshouldpayattentiontothedesignofmillingmachinefixture:clampingforcetobesufficientself-lockingandanti-stroke；fixtureinstallationtobeaccurateandreliable,thatis,whentheprocessinginstallationandtheproperuseofdirectionalkeysontheknifedevice；specificfolderhavesufficientstiffnessandstability,thestructuremustbereasonable.1.DirectionalkeysDirectionalkeyposition,alsoknownaskeys,installedonthebottomoftheverticalslotfixture,generallywithtwo,aninastraightline,thefartherthedistance,thehighertheprecision-oriented,withscrewfasteninginthespecificfolder.Directionalkeysworkwiththemillingmachinewithtable-shapedslotinthemachinetoolfixturetodeterminethecorrectposition；canabsorbpartofthecuttingtorque,reducingtheloadonclampingbolttoincreasethestabilityofthefixture,soflatandsomespecialdrillingjigboringmachinefixtureisalsofrequentlyused.Directionalkeysarerectangularandroundtwo.2.OftheknifedeviceDevicesontheknifeblockandknifebythesideofthefootofthefixtureandtoolusedtodeterminetherelativeposition.Thestructureoftheformofaknifedependsontheshapeofthesurfaceprocessing.Directionalhigh-precisionfixtureshouldnotbeusedorheavydirectionalkeys,butinthespecificfolderononeelongatedsideprocessingasabasetolookforistheinstallationlocationcalibrationfixture.Knifeblockonthepinandscrewfastenercommonlyusedinthespecificfolder,itslocationshouldbeeasy-to-useplug-footontheknife,withoutprejudicetotheworkpieceloadingandunloading.Ontheknifewhentheknifecutterblockwithapluginbetweenthefeetwiththeknifetooltoavoiddirectcontactblockorcausedamagetotheknifebladeblockprematurewear.CypriotCypriotfeetareflatfeetandtwo-footcylindricalplug,thethicknessanddiameterof35mm,manufacturingtoleranceh6.Sideoftheknifeblockandfeethavebeenstandardized(thedesigncanbefoundintherelevantmanual),usethetotalfixtureSedatmapscaleshouldbemarkedontheknifeblocksizeandtheworksurfaceandpositioningthelocationbetweenthecomponents.Devicesshouldbeinstalledonthebladeoftheknifeandiseasytocutoneendoftheworkpiece.3.FolderspecificdesignToimprovethemillingfixtureinstalledinthemachinetoolstability,reduceitsintermittentcuttingmaybecausedbyvibration,notonlyinthespecificfolderhavesufficientstiffnessandstrength,theirheightandwidthratioshouldalsobeappropriate,ageneralH/B11.25,inordertoreducethefixturecenterofgravity,sothatascloseaspossibletotheworkpiecesurfacecountertops.Inaddition,wemustsetareasonableandearblockstostrengthenthetendons.Ifthefolderspecificwide,canbesetupinthesamesideoftwoT-slotmillingmachinetableequidistantbetweentheearsBlock；ofheavy-dutymillingfixtures,specificfoldersshouldalsobesetupatbothendsoftherings,suchasliftingholesortocarry.Inthemillingprocess,theofteninstalledinthemillingfixturetable,togetherwiththejigwiththeworkpiecefeedtableformovement.Inthemillingprocess,theofteninstalledinthemillingfixturetable,togetherwiththejigwiththeworkpiecefeedtableformovement.Accordingtotheworkpiecefeedmeansofgeneralmillingfixturecanbedividedintothefollowingtwotypes:1.Linearfeed-typemillingfixture。Inthemillingprocess,theofteninstalledinthemillingfixturetable,togetherwiththejigwiththeworkpiecefeedtableformovement.2.Circlefeedmillingfixture.Suchfixturesarecommonlyusedinthemillingmachinewithrotarytable,theworkpiecetable,togetherwiththefixturewiththecontinuous,slowmovementoftherotaryfeed,noparkingwillbeloadingandunloadingtheworkpiece.Accordingtotheprocessingrequirementsofthetwocutterheadcanalsoberoughatthesametime,finishingMillingisaflat,keyway,gearandavarietyofformingsurfaceprocessingmethodscommonlyused.Processingtheworkpieceinthemillingmachine,thegeneraladoptionofthefollowingtypesofclampingmethods:(1)directlyinthemillingmachinetableclampingalargeworkpiececlampingoftendirectlyinthetable,withstud,platecompactor,whichneedtodialindicatormethods,toolssuchaszonedtofindtheneedlesurfaceandthecutterisprocessingrelativeposition.(2)viceflattoolusedforclampingtheworkpieceintheshapeofasimple,smallparts,generalmachinetoolscanbeusedinclampingviceinthemouth,theneedtoensurethatwhenusedinmachinevicethecorrectposition.(3)dividingheadwiththeworkpiececlamping,theneedforindexingoftheworkpiece,thegeneraldirectclampingheadinthesub-degrees.Inaddition,indexingoftheworkpiecewithoutdividingheadwithclampingprocessingisalsoveryconvenient.(4)wit