金属切削加工毕业设计论文中英文对照资料外文翻译文献.docx

金属切削加工毕业设计论文中英文对照资料外文翻译文献.docx

《金属切削加工毕业设计论文中英文对照资料外文翻译文献.docx》由会员分享，可在线阅读，更多相关《金属切削加工毕业设计论文中英文对照资料外文翻译文献.docx（20页珍藏版）》请在冰豆网上搜索。

金属切削加工毕业设计论文中英文对照资料外文翻译文献

中英文对照资料外文翻译文献

Metalmachiningknowledge

1Mechanicalprocessingsystem

Fromthewholeprocessofmechanicalmanufacturing,themostbasiccomponentsofmachinepart,alsoisthefirsttoproducequalifiedparts,andthenassembledintocomponents,againfromzero,partsassemblyintomachine,therefore,manufacturedtomeettherequirementsofthevariouspartsofprocessingmachineryismainpurpose,andinthevastmajorityofmaterialmachiningisametalmaterial,sothemachiningismainlytoavarietyofmetalcutting.

Partsofthesurfaceisusuallyseveralsimplesurfacesuchasplane,cylindricalsurface,conicalsurface,formingsurfaceandspherical,combination,andthesurfaceofthepartisthroughavarietyofmachiningmethod,inwhichthemetalcuttingmachinetoolwiththeworkpieceandtoolcoordinationrelativemovementofresectionofpartmachiningsurplusmaterials,accesstoinshape,sizeandsurfacequalityarecompatiblewiththerequirementsofthisprocessiscalledthemetalcuttingprocessing.

Metalcuttingprocessing,oftenaspartofthefinalprocessingmethod,itneedstousemetalcuttingtoolstoprocessparts,betweenthemtodeterminetherelativemotionandbeargreatcuttingforce,usuallyinthemetalcuttingmachinetoolforprocessing,partsandtoolsrequiredbymachinetoolfixtureandtoolandmachinetoolforreliableconnectiontheydotherelativemotion,drive,realizethecuttingprocess,themetalcuttingmachinetool,cuttingtool,fixtureandworkpiecemachiningclosedsystemcalledmechanicalprocessingsystem,themetalcuttingmachinetoolprocessingmachinerypartsmechanicalwork,supportingandprovidingdynamicaction;cuttingtooldirectactionofpartsmachining;machinetoolfixtureusedonpartspositioningandclamping,thecorrectpositionofprocessing.Thechapteronmachiningprocesssystemfourpartisanalyzed,themechanicalpartsoftheprocessingofthewholeprocess.

2Cuttingmotionandparameters

2.1Cuttingmovement

Metalcuttingprocessing,workpiecemachiningprocessisprocessedobjectingeneral,anyoneoftheworkpiecearecomposedofroughprocessingtofinishedproductprocess,inthisprocess,tomakethetoolontheworkpiecemachiningtoformvarioussurfaces,mustmakethetoolandworkpiecerelativemotionisgenerated,thisinmetalcuttingprocessingmustberelativemotionisknownasthecuttingmovement.Tolatheprocessingoutercylindricalsurfaceasanexample,Figure2-1showsaturningmovement,cuttinglayerandformedontheworkpiecesurface.

Figure2-1turningmovement,cuttinglayerandformedontheworkpiecesurface

Cuttingmotioncanbedividedintothemainmovementandfeedmovementofthetwokind.

（1）Mainmovement

Mainmovementistheremovaloftheunnecessarymetallayer,formingthenewsurfacenecessaryforthemovement,itisthemostbasic,cuttingthemainmotion,itisusuallythehighestspeed,consumptionofmachinetoolpowermost,suchasturning,boringmachiningworkpieceturning,millinganddrillingprocessingcutterrotarymotion,planingisplaninglinearmotion.

（2）Feedmotion

Feedmovementistobecuttingmetallayerintermittentorcontinuousinputofcuttingamovement,withthemainmovementcoordinationcanbecontinuouslyremovedmetallayer，toobtainthedesiredsurface.Feedmotionischaracterizedbylowspeed,lowpowerconsumption,canbecomposedofoneormoreexercise.Figure2-1inexcircleturningalongtheaxialdirectionofthelongitudinalfeedmotioniscontinuous,radiallyalongtheworkpiecetransversefeedingmotion,itisintermittent.

（3）Layercutting

Cuttinglayerreferstocuttingcuttingworkpiecetoasinglestroketheresectionoftheworkpiecemateriallayer.ShowninFigure2-1,theworkpiecerotatesacirclebacktotheoriginallevel,becausethetoollongitudinalfeedmotioniscontinuous,thecuttingtoolfromthepositionIhadmovedtopositionII,inthetwopositionoftheformedworkpiecemateriallayer（FigureABCDregion）iscuttinglayer.

（4）Thecuttingprocessisformedontheworkpiecesurface

Theworkpieceinthecuttingprocessintheformationofthethreesurfaces:

oneofthesurfacestobeprocessedisreferstotheworkpiecetobecutawaythesurfacefigureexternalcircularsurface1;thetransitionsurfaceistheworkpiececuttingedgesarecuttingsurface,asshowninthefigure2surface;surfacereferstotheworkpiecebythecuttingprocessaftertheformationofthethesurfaceofexternalcircularsurface,asshowninfigure3.

2.2Cutting

Betweenthetoolandtheworkpiecewithrelativemovementcanbecutting,usedtomeasurethemovementofcuttingsizeparametercalledthecuttingparameters,cuttingspeed,feedrateanddepth（depth）calledthecuttingelementsofthethree.Itisonlyreasonabletodeterminetheamountofcuttingcanbecarriedoutsmoothlycutting.

（1）Cuttingspeed

Thecuttingedgeofselectedpointsontheworkpiecerelativetothemainmovementspeed,unit

or

.Becauseeachpointonthecuttingedgeofthecuttingspeedisdifferent,whencalculatingthemaximumcuttingspeedcuttingtoolusedonbehalfofthecuttingspeed.Theoutercirclelatheturningcuttingspeedcalculationformula:

（2-2）

In

—theworkpiecesurfacediameter（mm）,

—workpiecespeed（

）.

（2）Feed

Cuttingtoolinthedirectionoffeedontheworkpiecerelativetothedisplacementofsaidfeed,differentprocessingmethods,thecuttingtoolandthecuttingmovementindifferentforms,thefeedformulationandmeasurementmethodsarealsodifferent.Feedunit

（usedforturning,boring）or

Stroke（usedforplaning,grindingetc.）.Thefeedthatfeedmovementspeed.Feedvelocitycanalsobeusedtofeedspeed

（company

）Orfeedpertooth

（usedformillingcutter,reamer,cutter,unitis

Tooth）Express.Ingeneral

（2-3）

Typeof

—mainmotorspeed（

）,

—thecutterteeth.

（3）Backcuttingdepth（depthofcut）

Inthedirectionperpendiculartothedirectionofmainmovementandfeedmovementinthedirectionoftheworkingplanemeasurementofworkpieceandthecuttingtooledgecuttingsurfacecontactlength.Forcylindricalturning,backcuttingdepthfortheworkpieceonthemachinedsurfaceandtheverticaldistancebetweenthesurfacetobemachined,theunit

.Thatis

（2-4）

In

—theworkpiecesurfacediameter（

）,

—machinedsurfacediameter（

）

3Cuttingtoolbasicknowledge

Intheprocessofmetalcutting,cuttingworkisdonedirectlytool,andthecuttingtoolisfitforcuttingwork,mainlybycuttingpartofthetoolgeometryandcuttingtoolmaterialsreasonablephysical,mechanicalproperties.

3.1Cuttingpartofthetoolstructuralelements

Cuttingtooltypearemany,variedstructure.Lathetool,planerisasingle-pointcuttingtool,andthedrillbit,cutter,cutter,althoughtheydifferinshape,buttheyarecuttingpartofthestructuralelementsandgeometryhavemanyfeaturesincommon,soacorrectunderstandingandunderstandingasingle-pointcuttingtoolistherecognitionandunderstandingofknifewithfoundation.

AsshowninFigure3-1,toolcomprisesaknifebody（clampingpart）andthecutterhead（cutting）.Theknifebodyisusedtothetoolclamponlathetoolholder,supportingandforcetransmissioneffect,thecutterheadtocuttingwork.Toolcuttingpart（alsoknownasthecutterhead）bytherakeface,theflank,minorflank,themaincuttingedge,asecondarycuttingedgeandtip.

Figure3-1tool.

Theirdefinitionsrespectively:

（1）front（front）toolandchipcontactandtheinteractionofsurface.

（2）theflank（mainbehindthecutterandworkpiece）transitionsurfacerelativetoandinteractswiththesurfaceof.

（3）theminorflank（sidebehind）toolandmachinedsurfacerelativetoandinteractswiththesurfaceof.

（4）themaincuttingedgerakefaceandflankoftheintersectionofmain.Itcompletesthemaincuttingwork.

（5）asecondarycuttingedgerakefaceandflankofthelineside.Itismatchedwiththemaincuttingedgefinishcutting,andfinallyformingthemachinedsurface.

Figure3-2cutter,drillbit,millingcuttercuttingsectionshape

（6）themaincuttingedgeandthesidecuttingedgesattheconnectionofablade.Itcanbesmalllinesegmentorarc.

Thus,turningtoolismainlycomposedofthreeblades,twocuttingedgesandanose,andothertypesoftools,suchasknives,drillbits,millingcutter,canbeseenastheevolutionandcombinationtool.AsshowninFigure3-2,planingcuttingpartofthetoolshapeandsame（Figure3-2a）;thedrillbitcanberegardedastwopositiveandreverseturningholewallandatthesametimethetool,whichhastwomaincuttingedge,twosidecuttingedge,alsoaddsatransverseblade（FIG.3-2b）;millingcutterapluralityofcuttercanberegardedasthecombinationofcompositetools,eachofwhichcorrespondstoalathetoolcuttertooth（Figure3-2c）.

3.2Toolgeometricangle

（1）Toolanglereferencecoordinatesystem

Theangleofcuttingtoolistodeterminethecuttingpartofthetoolgeometryparameters,todeterminetheangleofcuttingtool,mustdeterminefordefinitionsandregulationsangleofvariousreferenceplane,consistingofvariousreferencecoordinatesystem,outsideroundtoolasanexampleintheproductionpracticeofthemostcommonlyusedcoordinatesareorthogonalplanereferencecoordinatesystem,asinFigure3-3inthreemainplanarcomposition:

①surfacecuttingedgeofselectedpoints,perpendiculartothepointofmainmovementdirectionofplaneassumption.ToexpresswithPr.

②thecuttingplanecuttingedgeofselectedpoints,andcuttingedgetangentialandperpendiculartothecuttingtool,theflatbasesurface