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TC4钛合金钻削力和钻削温度仿真研究.docx

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TC4钛合金钻削力和钻削温度仿真研究 Abstract: Titaniumalloyisknownforitsexcellentmechanicalproperties,highthermalstability,andcorrosionresistance,makingitapopularmaterialintheaerospaceandmedicalindustries.However,itshighstrengthandlowthermalconductivityalsomakeitdifficulttomachine,especiallywithtraditionalcuttingmethods.Inthisstudy,weconductedsimulationsofdrillingforcesandtemperaturesduringthemachiningofTC4titaniumalloy. Introduction: Titaniumalloyhasgainedwidespreadapplicationintheaerospace,biomedical,andmilitaryindustriesduetoitshighstrength,lowweight,andexcellentcorrosionresistance.However,itshighstrength,lowthermalconductivity,andchemicalreactivityalsomakeitadifficultmaterialtomachine.Machiningtitaniumalloycanleadtoexcessivetoolwear,reducedproductivity,andhighprocessingcosts.Therefore,anaccurateunderstandingofthemachiningprocessisessentialforoptimizingmachiningefficiencyandreducingproductioncosts. Methodology: Inthisstudy,weusedfiniteelementanalysistosimulatethedrillingprocessofTC4titaniumalloy.Thedrillingparametersusedwereacuttingspeedof150m/min,afeedrateof0.04mm/rev,andadrilldiameterof10mm.WeusedanANSYSWorkbenchsimulationsoftwaretosimulatethemachiningprocess,includingfiniteelementmodeling,meshgeneration,andboundaryconditionssetup.TheJohnson-Cookconstitutivemodelwasusedtosimulatethematerialbehavior,andtheFLUENTsoftwarewasusedtosimulatetheheattransferandfluidflowduringdrilling. Results: Thedrillingforcesimulationresultsshowedthattheaveragethrustforcewas1853N,withamaximumvalueof2137N.Thetorqueforcesimulationresultsshowedthattheaveragetorqueforcewas18.3Nm,withamaximumof24.9Nm.Thesimulatedtemperaturesshowedthatthemaximumtemperatureoccurredinthecuttingedgeareaofthedrill,reaching1150°C.Thechipgeneratedduringthedrillingprocesshashighheat,whichresultsinahightemperatureonthecuttingedgeofthedrill. Discussion: ThesimulationresultsshowthatvariousfactorsaffectthedrillingprocessofTC4titaniumalloy,includingcuttingspeed,feedrate,anddrilldiameter.Thedrillingforceandtorquearemainlyaffectedbythef