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3FEAofThermalPropertiesforHighSpeedMotorizedSpindle[],--,,ANSYS:ANSYS[ABSTRACT]Inthispaper,theheatgenerationdevelopedfromthebuilt2inmotorandthebearingfric2tionisanalyzedandtheanalysisoftheheatrediationsofoil2waterheatexchangecoolingsystemandoil2airlubri2cationsystemarealsodone.Onthisbasis,thefiniteele2mentanalysis(FEA)modelofthehighspeedmotorizedspindletemperaturefieldisbuiltandthetemperaturefieldiscalculatedbyusingANSYSsoftware.Themainmeasurestoimprovetemperaturefieldofthehighspeedmotorizedspindlearebroughtforward.Keywords:HighspeedmachiningMotorizedspindleThermalpropertiesFEAANSYS,,1,,,,,(HighSpeedMotorizedSpindle),,,,,,,,3(No.2001BA203B15),(No.200215),11:,;,,OTT--1Fig.1Structurediagramofhighspeedmotorizedspindle2:2.111Pn/kWnn/rmin-1nmax/rmin-1Mn/NmPVn/kW19.92340180001243.8022003104:3,1%5%2(PVn=3.8kW),2/3(2.53kW),1/3(1.27kW)2.2,Si3N4,GCr1522d/mm7060D/mm11095Db/mm11.11259.5250Zbrg/19180/()1515F0/N155111Palmgren,=Mw(1):;M;wMM0M1,:M=M0+M1=0.45f0(w)2/3dm3+f1FsCs1/3Fdm(2):f0,,f0=1;;w;dm;f1,,f1=0.001;Fs;Cs;F33.1--,,,,,;,,3,Aax=2dmh,(3):Aax;dm;h:u=V1Aax2+wdm221/2,(4)u;V1;Aax,dm(3);w,:=(c0+c1uc2),(5):u;c0,c1,c2,9.7,5.33,0.83.2--,Re,43.3,,,,,2t5:t=28(1+0.45vt),(6):vt3.4,(0.5mm),,,Nu,212Nu=0.23r10.25Re0.5,(7)=NuH,(8)(7),(8):r1;;;H3.5,,6,s=9.7W/(m2)44.11,,,,,OTT,22Fig.2Geometrymodelofhighspeedmotorizedspindle4.2ANSYS40PLANE55PLANE55,4,,,261030084.3(1):(1)Te=25;(2)nmax=18000r/min;(3)-V2=2.510-3m3/s,0.4MPa,Tair=25;(4)-Q=2.2410-4m3/s,Tin=25(1)(8)33/W350/W221/W(m2)-1260/W(m2)-1206/W(m2)-10.03/W(m2)-1212/W(m2)-1144ANSYS,,3,43(nmax=18000r/min)Fig.3Temperaturefieldofhighspeedmotorizedspindle(nmax=18000r/min)3,,118.8,,,,108.4,,61.7,56.3,36.7,31.3,,,222003104(nmax=18000r/min)Fig.4Temperaturerisecurveoffrontandbackbearingsofhighspeedmotorizedspindle(nmax=18000r/min)4,6000s(100min),61.756.4,,nmax=18000r/min100min,,,55,2000r/min(8.73W5.56W),19,,,10000r/min,,,5Fig.5Temperaturerisecurveofhighspeedmotorizedspindleatdifferentrotaryspeeds4.4,3:10000r/min,,,39.1;40%80%,41.6,46.4,:-;-10000r/min,,-66,,;5L/min,,,,,,,6Fig.6Effectofcoolingoilflowrateontemperatureriseofhighspeedmotorizedspindle10000r/min,,-77,,5,,ANSYS,:(1):(26)32(1),,,,,500r/min(2),,,(3),,,1015min,,3(1)LOM,LOM/(2),,,(3),,,(4),,2040min1,..,1999(6):5365422,,,..,2000,11(10):111211153,..:,20004,..,2001(3):4849()(23)7Fig.7Effectofcompressedairflowrateontemperatureriseofhighspeedmotorizedspindle(2),;,,(3)-,,(4)-,,1..:,20022,,..:,19853..:,19874..:,19915..:,19926,..:,1989()--2003112629-1750,300,1m2-,,112426,()62200310