外文翻译--关于模仿正交切削和核实边缘断裂模型的一个新的车削方法的研究 英文版.pdf外文翻译--关于模仿正交切削和核实边缘断裂模型的一个新的车削方法的研究 英文版.pdf

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DOI101007/S0017000420876ORIGINALARTICLEINTJADVMANUFTECHNOL200526965–969GWOLIANQCHERNSTUDYONANEWTURNINGMETHODTOSIMULATEORTHOGONALCUTTINGANDTOVERIFYANEDGEBREAKOUTMODELRECEIVED01SEPTEMBER2003/ACCEPTED13JANUARY2004/PUBLISHEDONLINE12JANUARY2005SPRINGERVERLAGLONDONLIMITED2005ABSTRACTINORDERTOVERIFYANEDGEBREAKOUTPREDICTINGMODELINORTHOGONALCUTTING,WHICHWASPROPOSEDBYTHEAUTHOR’SPREVIOUSWORK,ORTHOGONALMACHININGEXPERIMENTSMUSTBECONDUCTEDACNCLATHEWASUTILIZEDTOCARRYOUTSIMULATEDORTHOGONALCUTTINGSTHEWORKPIECE,MADEOFALUMINUMALLOYAL6061T6,ISACYLINDRICALBARWITHSQUARETHREADSANDAXIAL/RADIALGROOVESTHREADINGANDGROOVINGINSERTSWITHAFLATCUTTINGEDGEWERECHOSENASTHECUTTINGTOOLSTHEEXPERIMENTALDATAWEREUSEDTOVERIFYTHEPREVIOUSLYDEVELOPEDEDGEBREAKOUTMODELTHETESTSSHOWEDEXCELLENTAGREEMENTWITHTHEMODELPREDICTIONSKEYWORDSEDGEBREAKOUTORTHOGONALCUTTINGTHREADINGTURNING1INTRODUCTIONITISWELLKNOWNTHATTHECUTTINGPROCESSCAUSESLOCALIZEDSHEARINADISCRETEZONETHATEXTENDSFROMTHECUTTINGEDGETOTHEWORKMATERIALFREESURFACE1,2RESEARCHONTHEMICROMORPHOLOGYOFMACHINEDCHIPSUSINGTHESCANNINGELECTRONMICROSCOPESEMHADREVEALEDTHATTHECHIPFORMATIONOCCURSBYREPEATEDSHEARACROSSTHIN“SHEARFRONT”ORNARROWBANDS,WHICHPRODUCEALAMELLARSTRUCTUREINTHECHIPS3MOSTOFTHESEMACHININGRESULTSWEREOBTAINEDUNDERTHECONDITIONSOFORTHOGONALCUTTINGSINCEMERCHANT4DEVELOPEDTHEMETALCUTTINGMODELIN1940S,MANYFOLLOWERSHADTRIEDTOESTABLISHAMOREACCURATEFORMULATOPREDICTTHESHEARANGLEINORTHOGONALCUTTING2,5–7THUSORTHOGONALCUTTINGBECOMESTHEFUNDAMENTALPROCESSANDTHEMOSTBASICTOPICINMETALCUTTINGCHERNANDDORNFELD8HADFOUNDTHATEITHERBURROREDGEBREAKOUTWASFORMEDWHENTHECUTTINGTOOLLEFTTHEWORKPIECEINORTHOGONALCUTTINGACHAMFERCOULDBEOBSERVEDONTHEWORKPIECEIFEDGEBREAKOUTOCCURREDGLCHERNDEPTOFMECHANICALENGINEERING,NATIONALYUNLINUNIVERSITYOFSCIENCEANDTECHNOLOGY,YUNLIN,TAIWAN640,ROCEMAILCHERNGLPINEYUNTECHEDUTWTEL8865534260/EXT4145THEYDEVELOPEDACRITERIONFORTHEFORMATIONOFBURROREDGEBREAKOUTANDPROPOSEDABURR/BREAKOUTPREDICTINGMODELINORTHOGONALCUTTING,THEPERFECTLYSHARPCUTTINGEDGEISASTRAIGHTLINEEXTENDINGPERPENDICULARTOTHECUTTINGVELOCITYANDGENERATESAPLANESURFACEAFTERTHECUTINREALMANUFACTURINGPROCESSES,HOWEVER,TRUEORTHOGONALCUTTINGISRARELYSEENSLOTTINGHORIZONTALMILLINGANDSHAPINGARETWOTYPESOFORTHOGONALMACHININGPROCESSESBUTTHERANGEOFCUTTINGVELOCITYOFASHAPERISQUITELIMITEDANDTHEDEPTHOFCUTWHICHISTHEUNDEFORMEDCHIPTHICKNESSISNOTUNIFORMDURINGSLOTTINGTHUS,BOTHSHAPINGANDSLOTTINGHAVESOMELIMITATIONSTOPERFORMTHEDESIREDCUTTINGOPERATIONANDVIOLATESOMEREQUIREMENTSOFTHEORTHOGONALCUTTINGAWIDELYUSEDARRANGEMENTTOACHIEVEORTHOGONALCUTTINGIS“TURNINGENDOFTUBE”THEENDOFATUBEISCUTINALATHEBYATOOLWITHZEROINCLINATIONANGLESINCETHEDIAMETEROFTHETUBEISMUCHGREATERTHANTHETHICKNESSOFTHEWALL,THECUTTINGVELOCITYCANBETREATEDASCONSTANTALONGTHETUBETHICKNESSDURINGTHECUTTINGTHISARRANGEMENTOFSETUPISGOODFOREXPERIMENTSINVESTIGATINGTHECUTTINGBEHAVIOR,BUTISNOTSUITABLETOOBSERVETHEFORMATIONOFEDGEBREAKOUTATTHEEXITSTAGEOFCUTTINGINORDERTOSIMULATEORTHOGONALCUTTING,CHERNANDDORNFELD8USEDAUNIVERSALIMPACTMACHINETOSERVETHISPURPOSETHECONFIGURATIONOFTHIS“IMPACTMACHINING”TESTISSHOWNINFIG1THETOOLISFIXEDTOTHEPENDULUMBYTHESPECIALLYDESIGNEDTOOLHOLDERAPRECUTISNECESSARYINORDERTOOBTAINACONSTANTUNDEFORMEDCHIPTHICKNESSTHISEXPERIMENTALSETUPFIG1SCHEMATICILLUSTRATIONOFIMPACTMACHININGTEST8966WASUSEDTOGETSOMEBURRORBREAKOUTATTHEWORKPIECEEDGEANDTOVERIFYTHEIRBURR/BREAKOUTPREDICTINGMODELBUTTHECUTTINGSPEEDCANNOTBEADJUSTEDINTHETESTSSINCETHEINITIALPOSITIONOFTHEPENDULUMISFIXEDALSO,THEUNDEFORMEDCHIPTHICKNESSISHARDTOCONTROLTHISPAPERPROPOSESANEWEXPERIMENTALARRANGEMENTTOSIMULATEORTHOGONALCUTTINGTOOVERCOMETHESELIMITATIONSANDDISADVANTAGESITINTRODUCESTHEGEOMETRYOFTHESPECIALLYDESIGNEDWORKPIECEANDTHECUTTINGTOOLTHEEXPERIMENTALDATAWEREUSEDTOVERIFYTHEEDGEBREAKOUTMODEL,WHICHWASPREVIOUSLYDEVELOPEDBYTHEAUTHOR8,9,ATTHEEXITSTAGEOFORTHOGONALCUTTINGTHEEXPERIMENTALRESULTSSHOWEDEXCELLENTAGREEMENTWITHTHEMODELPREDICTIONS2EDGEBREAKOUTPREDICTINGMODELATTHEEXITOFTHEORTHOGONALCUTTING,EITHERBURROREDGEBREAKOUTNEGATIVEBURRISFORMEDTHEAUTHORHADSTUDIEDTHEMECHANISMSATTHEEXITSTAGEOFORTHOGONALCUTTINGONBURRFORMATIONANDEDGEBREAKOUTUSINGANSEMSUBSTAGE8,9ANEGATIVEDEFORMATIONPLANEBEGINSTOFORMWHENTHESTEADYSTATECHIPFORMATIONSTOPSASTHETOOLAPPROACHESTHEENDOFTHECUTPLASTICBENDINGANDSHEARINGOFTHENEGATIVEDEFORMATIONPLANEARETHEDOMINANTMECHANISMSOFBURRFORMATIONWHEREASCRACKPROPAGATIONALONGTHEPLANECAUSESTHEEDGEBREAKOUTACHAMFERISCREATEDONTHEWORKPIECEWHENEDGEBREAKOUTOCCURSBASEDONTHESEOBSERVATION,ABURR/BREAKOUTMODELWASPROPOSEDASSHOWNINFIG2INFIG2A,THETOOLWITHARAKEANGLEΑADVANCESTOAWHEREBURRFORMATIONINITIATESΦISTHESHEARANGLEANDTOISTHEUNDEFORMEDCHIPTHICKNESS,WHICHISALSOTHEDEPTHOFCUTINTHISCASEINITIATIONOFBURRFORMATIONISCHARACTERIZEDBYTHEINITIALNEGATIVEDEFORMATIONANGLE,DENOTEDASΒO,ANDTHEINITIALTOOLDISTANCEOFTOOLTIPAFROMTHEENDOFWORKPIECE,ΩDEVELOPMENTANDFINALBURRFORMATIONINVOLVESOMEROTATION,ASCANBESEENINFIGS2BAND2CFIG2A–DBURR/BREAKOUTFORMATIONMODEL8AINITIATIONBDEVELOPMENTCFINALBURRFORMATIONDWORKPIECEWITHEXITANGLEDETAILSOFTHEMATHEMATICALDERIVATIONOFTHISBURR/EDGEBREAKOUTMODELCANBEFOUNDINREFERENCES8AND9INTHIS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本文标题:外文翻译--关于模仿正交切削和核实边缘断裂模型的一个新的车削方法的研究 英文版.pdf
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