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外文翻译--影响工件表面质量的因素.doc

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外文翻译--影响工件表面质量的因素.doc

英文原文INFLUENCEFACTORSONTHEQUALITYOFTHEWORKPIECESURFACEPROCESSINGPROCESSONTHESURFACEQUALITYOFTHEINFLUENCETHEVIBRATIONOFTHEPROCESSSYSTEMOFTHEINFLUENCEONTHEQUALITYOFTHESURFACEINMECHANICALPROCESSINGPROCESSTECHNOLOGYSYSTEMSOMETIMESOCCURVIBRATION,THATIS,INTHECUTTINGEDGETOOLANDWORKPIECEISCUTTINGSURFACEEXCEPTONTHENAMEBETWEENCUTTINGMOTION,BUTALSOCANAPPEARACYCLICALRELATIVEMOTIONVIBRATIONTHATPROCESSSYSTEMBYFORMINGMOVEMENTOFTHEINTERFERENCEANDDAMAGE,MAKEPROCESSINGSURFACEAPPEARCHATTERMARKS,INCREASESTHESURFACEROUGHNESSVALUE,WORSENINGPROCESSINGSURFACEQUALITYCUTTERGEOMETRICALPARAMETERS,MATERIALSANDCUTTINGQUALITYTOTHESURFACEQUALITYOFTHEINFLUENCETHECUTTINGTOOLGEOMETRICPARAMETERSONTHESURFACEROUGHNESSOFTHEBIGGESTINFLUENCEISVICEPIANJIAO,THEMAINPOINTPIANJIAO,ARCRADIUSUNDERCERTAINCONDITIONS,REDUCEPIANJIAO,LORD,VICEPIANJIAOPOINTARCRADIUSCANREDUCESURFACEROUGHNESSUNDERTHESAMECONDITIONS,CARBIDECUTTINGTOOLSPROCESSOFSURFACEROUGHNESSVALUELESSTHANHIGHSPEEDSTEELPAPERCUTTINGKNIFE,ANDDIAMONDANDCBNTOOLSANDBETTERTHANHARDALLOY,BUTBECAUSETHEDIAMONDANDIRONFAMILYAFFINITYMATERIALS,ITSHOULDNOTBEUSEDFORPROCESSINGIRONFAMILYMATERIALSINADDITION,THECUTTINGTOOLBEFOREANDAFTERTHEFACE,CUTTINGKNIFEBLADEITSELFDIRECTLYINFLUENCETHEROUGHNESSOFTHEPROCESSINGTHEROUGHNESSOFTHESURFACE,THEREFORE,IMPROVETHEQUALITYOFCUTTINGTOOL,CUTTINGTOOLANDFACE,CUTTINGKNIFEBLADEROUGHNESSVALUESHOULDBELOWERTHANTHEROUGHNESSOFTHE12LEVELSCUTTINGFLUIDTOTHEINFLUENCEONTHEQUALITYOFTHESURFACECUTTINGFLUIDCOOLINGANDLUBRICATIONEFFECTCANREDUCETHECUTTINGPROCESSOFINTERFACEFRICTION,REDUCETHETEMPERATUREOFCUTTINGZONE,THECUTTINGMETALSURFACELAYEROFPLASTICDEFORMATIONDEGREEDOWN,RESTRAINTHEDEVELOPTHETHORNANDSCALESPRODUCEDINTHEPRODUCTIONOFDIFFERENTMATERIALSFORREASONABLECHOICEOFCUTTINGFLUIDSCANREDUCETHESURFACEROUGHNESSTHEWORKPIECEMATERIALONTHESURFACEQUALITYOFTHEINFLUENCETHEWORKPIECEMATERIALNATURE;PROCESSINGPLASTICMATERIALS,THECUTTINGTOOLSFORMETALEXTRUSIONPRODUCEDPLASTICDEFORMATION,ANDTHECUTTINGTOOLANDWORKPIECEFORCEDSEPARATIONOFTHETORNSCRAPSEFFECT,MAKETHESURFACEROUGHNESSVALUEINCREASETHEWORKPIECEMATERIALTENACITYTHEBETTER,METAL,PLASTICDEFORMATION,THEBIGGERTHEPROCESSINGSURFACEISTHEMORETHEROUGHPROCESSINGBRITTLEMATERIALINTHECHIPBROKENGRANULAR,DUETOTHECOLLAPSEINBROKENANDENDOWSTHEMACHINEDSURFACELEFTMANYPITTEDSURFACEROUGHNESSGENERALTOUGHNESSLARGEPLASTICMATERIALS,PROCESSINGAFTERLARGESURFACEROUGHNESS,ANDTOUGHNESSOFSMALLERPLASTICMATERIALS,PROCESSINGTOGETSMALLERAFTERTHESURFACEROUGHNESSFORTHESAMEKINDOFMATERIAL,THEGREATERTHEGRAINSIZEOFTHEORGANIZATION,THELARGERTHESURFACEROUGHNESSTHEREFORE,INORDERTOREDUCETHESURFACEROUGHNESS,OFTENINCUTTINGPROCESSINGOFMATERIALBEFOREQUENCHINGANDTEMPERINGORISTHEFIREOFTREATMENTTOOBTAINHOMOGENEOUSFINEGRAINORGANIZATIONANDHIGHHARDNESSCUTTINGCONDITIONTHEINFLUENCEONTHEQUALITYOFTHESURFACEANDCUTTINGCONDITIONOFTHERELEVANTPROCESSFACTORS,INCLUDINGCUTTINGDOSAGES,COOLINGLUBRICATIONINLOWSPEEDPROCESSINGPLASTICMATERIALS,,EASYTOPRODUCETHEDEVOLOPANDSCALESTHORN,SO,IMPROVETHECUTTINGSPEED,CANREDUCETHEDEVOLOPANDSCALESTHORN,DECREASINGPARTALREADYTHESURFACEROUGHNESSVALUE;FORBRITTLEMATERIAL,GENERALWONTFORMTHEDEVOLOPANDSCALESTHORN,SO,CUTTINGSPEEDONTHESURFACEROUGHNESSBASICALLYNOINFLUENCETHEINCREASESPEED,PLASTICDEFORMATIONALSOINCREASES,THESURFACEROUGHNESSINCREASES,SO,REDUCETHESPEEDCANREDUCETHESURFACEROUGHNESSVALUE,HOWEVER,FEEDINGREDUCEDTOCERTAINVALUE,ROUGHNESSWONTOBVIOUSLYDECREASEDNORMALCUTTINGCONDITIONS,CUTTINGDEPTHONTHESURFACEROUGHNESSTHEIMPACTISNOTBIG,THEREFORE,MECHANICALPROCESSCANNOTSELECTTHETOOSMALLCUTTINGDEPTHCUTTINGSPEEDONTHESURFACEROUGHNESSINFLUENCEGENERALATTHEEARLYCHOOSELOWSPEEDCUTTINGANDFINISHINGCHOOSEHIGHSPEEDCUTTINGCANREDUCETHESURFACEROUGHNESSINTHEMEDIUMSPEEDCUTTINGPLASTICMATERIALS,DUETOEASYTOPRODUCETHEDEVOLOP,ANDPLASTICDEFORMATIONISBIGGER,SOAFTERPROCESSINGPARTSSURFACEROUGHNESSISBIGGERUSUALLYBYLOWORHIGHSPEEDCUTTINGPLASTICMATERIAL,CANEFFECTIVELYAVOIDTHEDEVOLOPOFGENERATION,THISTOREDUCETABLEANDROUGHNESSHAVEPOSITIVEROLEONTHESURFACEQUALITYOFTHEGRINDINGEFFECTSTHEINFLUENCEOFTHEGRINDINGWHEELGRINDINGWHEELGRANULARITYTHETHINNER,PERUNITAREAGRAINNUMBERGRINDING,THEMOREOFTHEGRINDINGSURFACEINFINESCRATCHESTHESURFACEROUGHNESSISSMALL;BUTIFTOOFINEGRANULARITY,PROCESSINGTOJAMWHEELITWILLINCREASETHESURFACEROUGHNESS,ALSOEASYTOPRODUCETHERIPPLEANDCAUSEBURNSTHEHARDNESSOFTHEGRINDINGWHEELSHOULDBETHERIGHTSIZE,ITSHALFTHELONGERTHEBETTERPASSIVATIONPERIOD;THEHARDNESSOFTHEGRINDINGWHEELISTOOHIGH,GRINDINGMILLISNOTEASYTOFALLOFFWHENGRAIN,MAKEPROCESSINGSURFACEISOFFRICTION,EXTRUSIONACTIONINTENSIFIES,THUSINCREASINGTHEPLASTICDEFORMATION,MAKINGTHESURFACEROUGHNESSINCREASES,ALSOEASYCAUSEBURNS;BUTTHEGRINDINGWHEELISTOOSOFT,GRITSTOOEASYTOFALLOFF,CANMAKEGRINDINGACTIONISREDUCED,LEADINGTOTHESURFACEROUGHNESSINCREASES,SOTOSELECTTHERIGHTGRINDINGWHEELHARDNESSGRINDINGWHEELDRESSINGTHEHIGHERTHEQUALITY,THESURFACEOFTHEGRINDINGWHEELCUTTINGTHEBLADE,CUTTINGTHENUMBEROFALLTHEMORETHEBETTEROFTHEBLADECONTOURSEX,GRINDINGSURFACEROUGHNESSANDSMALLERTHEINFLUENCEOFTHEGRINDINGWHEELSPEEDINCREASEDOSAGE,UNITTIMETHROUGHTHEPROCESSINGOFGRINDINGSURFACEGRAINNUMBERINCREASE,EACHSTARGRITSISGROUNDTOREDUCETHICKNESSOFTHEMETAL,THESURFACEAREAOFTHERESIDUALREDUCED;ANDATTHESAMETIME,IMPROVETHEGRINDINGWHEELSPEEDCANALSOREDUCETHEWORKPIECEMATERIALOFPLASTICDEFORMATION,THESECANMAKEPROCESSINGSURFACEROUGHNESSVALUEREDUCEDREDUCETHESPEED,UNITTIMETHROUGHTHEPROCESSINGOFGRINDINGSURFACEGRAINNUMBERINCREASE,THESURFACEROUGHNESSDECREASED;BUTTHELOWSPEED,WORKPIECEANDGRINDINGWHEELCONTACTTIMELONG,TOTHEQUANTITYOFHEATOFTHEINCREASING,OPPOSITEWILLINCREASETHEROUGHNESS,MAYALSOINCREASESURFACEBURNINCREASEGRINDINGDEPTHANDLONGITUDINALFEEDING,THEPLASTICDEFORMATIONINCREASE,WILLLEADTOTHESURFACEROUGHNESSVALUEINCREASERADIALFEEDINGINCREASE,THEGRINDINGPROCESSGRINDINGFORCEANDGRINDINGTEMPERATUREWILLINCREASE,GRINDINGSURFACEPLASTICDEFORMATIONDEGREEINCREASE,WHICHWILLINCREASETHESURFACEROUGHNESSTOGUARANTEETHEMACHININGQUALITYINTHEPREMISEOFGRINDINGEFFICIENCYINCREASE,WILLREQUIREAHIGHERSURFACETHECOARSEGRINDINGANDFINEGRINDINGSEPARATELY,COARSEGRINDINGISUSEDWHENTHEBIGRADIALDIRECTIONFEEDING,FINEGRINDINGTHERADIALFEEDINGTHESMALLERWHEN,FINALLYWITHOUTINTOTOGRINDING,TOGETTHESURFACEROUGHNESSOFSURFACEISVERYSMALLTHEWORKPIECEMATERIALTHEWORKPIECEMATERIALOFHARDNESS,PLASTICANDTHERMALCONDUCTIVITYONTHESURFACEROUGHNESSOFBIGEFFECTLARGEPLASTICSOFTMATERIALEASYJAMGRINDINGWHEEL,THERMALCONDUCTIVITYPOORHEATRESISTANTALLOYEASYFORTHEABRASIVEEARLYCAVING,WILLLEADTOINCREASEDGRINDINGSURFACEROUGHNESSINADDITION,BECAUSEGRINDINGTOTHEHIGHTEMPERATURE,REASONABLEUSECUTTINGFLUIDSCANREDUCETHEGRINDINGOFTEMPERATURE,REDUCEBURNS,CANALSORUSHEDTOFALLOFFTHEGRITSANDSCRAPS,AVOIDSCRATCHWORKPIECE,SOASTOREDUCETHESURFACEROUGHNESSAFFECTTHESURFACEOFPHYSICALANDMECHANICALPROPERTIESOFFACTORSSURFACELAYERCOLDHARDENINGTHECUTTINGEDGESOBTUSERADIUSINCREASED,ANDTHESURFACEOFMETALTHEEXTRUSIONOFENHANCED,PLASTICDEFORMATIONINTENSIFIES,COLDHARDTOSTRENGTHENAFTERCUTTINGTOOLKNIFESURFACEWEARINCREASES,THEKNIFESURFACEANDAFTERPROCESSEDSURFACEFRICTIONINTENSIFIED,PLASTICDEFORMATIONINCREASE,COLDHARDTOSTRENGTHENCUTTINGSPEEDINCREASE,CUTTINGTOOLANDWORKPIECEROLETIMEISSHORTENED,MAKEPLASTICDEFORMATIONEXPANDTHEDEPTHDECREASES,ANDCOLDHARDLAYERDEPTHDECREASESAFTERCUTTINGSPEEDINCREASE,HEATCUTTINGINTHESURFACELAYEREFFECTTIMEALSOSHORTENED,WILLMAKECOLDHARDDEGREEINCREASEFEEDINGINCREASES,CUTTINGFORCEALSOINCREASED,ANDTHESURFACEOFTHEMETALPLASTICDEFORMATIONINTENSIFIES,COLDHARDEFFECTISSTRENGTHENINGTHEWORKPIECEMATERIALOFPLASTICISLARGERANDTHECOLDHARDPHENOMENONTHESERIOUSSURFACELAYERMATERIALMETALLOGRAPHICCOMPOSITIONCHANGEWHENCUTTINGTHEHEATWASPROCESSINGSURFACETEMPERATUREOFPHASECHANGEAFTERMORETHANTEMPERATURE,THESURFACEOFTHEMETALMICROSTRUCTUREWILLCHANGEGRINDINGBURNSWHENASURFACETEMPERATUREOFPHASECHANGETOMILLERSTEMPERATUREABOVE,METALSURFACEMICROSTRUCTUREOCCURREDCHANGE,MAKETHESURFACEOFTHEMETALSTRENGTHANDHARDNESSOFTHELOWER,ANDWITHRESIDUALSTRESSPRODUCEAPPEAREVENMICROSCOPICCRACKS,THISPHENOMENONISCALLEDGRINDINGBURNSIMPROVEGRINDINGBURNSGRINDINGHEATCAUSEDBYGRINDINGWAYISTHEROOTOFTHEBURN,SOIMPROVINGGRINDINGBURNSBYTWOWAYSONEISASFARASPOSSIBLETOREDUCETHEGENERATIONOFGRINDINGHEAT;2ITISIMPROVEDCOOLINGCONDITION,MAKEASFARASPOSSIBLETHEQUANTITYOFHEATTOPRODUCELESSWORKPIECETHECORRECTCHOICEGRINDINGWHEELREASONABLECHOICEOFCUTTINGDOSAGESIMPROVEDCOOLINGCONDITIONSSURFACELAYERRESIDUALSTRESSPRODUCERESIDUALSTRESSOFREASONCUTTINGINPROCESSINGTHEMETALLAYERANDTHESURFACEWHENTHEREWEREPLASTICDEFORMATIONOCCURS,THESURFACEOFTHEMETALTOHEMATOCRITINCREASE;CUTTINGPROCESSING,CUTTINGAREAWILLHAVEALOTOFHEATCUTTINGPRODUCE;DIFFERENTANALYSISOFMETALLOGRAPHICORGANIZATIONHASDIFFERENTDENSITY,ALSOHAVEDIFFERENTOLUMEISNECESSARILYAFFECTEDBYTHECHANGEOFCONNECTEDTHEMATRIXOFTHEMETALBAR,HENCERESIDUALSTRESSPRODUCETHEMAINWORKSURFACEEVENTUALLYPROCESSTOTHECHOICEOFMETHODSCHOOSETHEMAINPARTSWORKSURFACEEVENTUALLYPROCESSMETHOD,WEMUSTCONSIDERTHEMAINPARTSOFTHESPECIFICWORKSURFACEWORKINGCONDITIONSANDTHEPOSSIBLEDAMAGETOTHEFORMINALTERNATINGLOAD,THEMACHINEPARTSONTHESURFACEOFTHELOCALMICROCRACKS,BECAUSEOFTENSILESTRESSOFACTIONTOMAKEPRIMARYCRACKEXPANDING,RESULTINGINPARTSFRACTUREIMPROVEPARTSFROMTHEVIEWPOINTOFFATIGUEDAMAGERESISTANCE,THEFINALPROCESSSHOULDCHOOSETHESURFACEINTHESURFACEPRODUCESRESIDUALSTRESSPROCESSINGMETHODINTHEMACHININGPROCESS,TOOLSONTHESQUASHANDFRICTIONMAKEMETALMATERIALSHAPPENPLASTICDEFORMATION,CAUSETHEORIGINALRESIDUEAREAOFDISTORTIONORGROOVELINESDEEPENED,INCREASESTHESURFACEROUGHNESSWHENTHEMEDIUMORMEDIUMLOWCUTTINGSPEEDCUTTINGPLASTICMATERIAL,THESURFACEBEFORETHESWORDINEASYTOFORMAHIGHHARDNESSOFTHEDEVOLOP,ITCANTAKETHEPLACEOFTHECUTTINGTOOL,BUTSTATEVERYUNSTABLE,THEDEVOLOPGENERATION,GROWUPANDFALLOFFWILLSERIOUSLYAFFECTTHEMACHINEDSURFACEROUGHNESSVALUEINADDITION,INCUTTINGPROCESSDUETOTHESTRONGSCRAPSANDFORMERKNIFEFRICTIONROLEANDTEARPHENOMENON,BUTALSOINPROCESSINGONTHESURFACEMAYPRODUCESCALETHORN,MAKEPROCESSINGSURFACEROUGHNESSINCREASESGRINDINGSURFACELAYERANALYSISOFMETALLOGRAPHICORGANIZATIONCHANGESANDGRINDINGBURNSMECHANICALPROCESSINGPRODUCESINTHEPROCESSOFHEATCUTTINGPROCESSINGSURFACEOFWORKPIECEWILLMAKETHERISEOFTEMPERATUREOFTHEVIOLENTLY,WHENTHETEMPERATUREMORETHANTHEWORKPIECEMATERIALMETALLOGRAPHICORGANIZATIONCHANGESOFTHECRITICALTEMPERATURE,METALLOGRAPHICORGANIZATIONC

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