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1、EffectofToolRakeAngleonMachiningVibrationAbstract：Effectoftoolrakeangleoncuttingvibrationbyexperimentsaredoneatdifferentcuttingspeedinmachiningoperation,andcorrespondingtheoreticalanalysisisconducted.Resultindicates,amplitudeofmachiningvibrationgraduallydecreas
2、eswithtoolrakeangleincreasing;whilerakeangleγ0<0°,thebiggestunidirectionamplitudeoccursatV=50~70m/min;Whileγ0≥0°,itisatV=160~180m/min.Moreover,quardingmeasuresispresentedonavoidingthebiggestamplituderangesoastoguaranteequanlityinprecisionmachiningathighspeed.Ke
3、ywords:machining,vibration,amplitude,toolrakeangleInmachiningoperation,toolcharacterisnotonlydecidedbymaterial,toacertainextent,itdependsonresonablegeometricalparameters.Toolrakeangleisoneofthespecialestgeometricalparameters,directlyaffectscuttingzonedeformatio
4、n,chipmorphology,chipbreakeffection,cuttingforce,toolheadstrengthandmachinedsurface,qualityitisresearchedbyforeignscholars.Relativestudypointsout[1]:toolrakeanglealsohasconsiderableeffectonmachiningvibration.Butwhatispresentsituationaboutresearchoftoolrakeangle
5、affectingmachiningvibration?Whatistherelationexsitsbetweenarkeangleandamplitudeofvibrationatdifferentcuttingspeedandwhatisthelaw?Theseandothersquestionshavenotyetintegratedcoferencesandexactdata.Forthisreason,choosegeneralmachinetool,fairlyusedworkpieceandtoolm
6、aterialinexperimentalresearchontherelationbetweenrakeangleandamplitudeofmachiningvibrationatdifferentcuttingspeed,andtheoryanalysisoftheresultisproducted,inanattempttogetreleventdatasandcorrespondingmaterial,andthenperfectreleventtheoryofrelationbetweenrakeangl
7、eandamplitudeofvibration.Thisresearchprovidestheorecialbasisforadoptingresonablerakeangleinpractice,avoidinglargestmaplitudezoneandguaranteeingqualityinpractice.1ExperimentalMaterial,EquipmentandInstrument1.1WorkpieceMaterialDifferentmetalmaterialshavedifferent
8、physicalmechanicalcharacters.Inthisexperiment,choosegeneralusedworkpiecematerial45#steelincylindricalmachining.1.2ToolMaterialAccordingtopiecematerial,chooseYT14hardalloytoo
