数控机床滚珠丝杠副的选择与计算

(,417103)::;;:TG659:B:1001-3881(2005)1-218-2SelectionandCalculationofBall-screwPairsforCNCMachineToolsZHOUYan(CoalMineMechanicalPlantofHunan,Lianyuan417103,China)Abstract:Selectionandcalculationofball-screwpairsinthedesignoffeedsysteminCNCmachinetoolswasintroduced.Thismethodcanbeappliedintheselectionandcalculationofball-screwpairsforothermachines.Keywords:CNCmachinetools;Ball-screwpairs;Selectionandcalculation,,,,(),,;,;;,;,1111,,300mmV300p1/31/2,112vmaxnmaxi,:PEvmaxinmax(1)113,90%()()C=fhfdfHfnPd(2):fh,;fd,;fH,;fn,nd;Pd,,,,,,Pd=(2Pmax+Pmin)/3(3)nd=(2nmax+nmin)/3(4):Pmax;nmax;Pmin;nmin,,(,,,,2211,,:81220051No11©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.Fcr=f12EIL20K1EFmax(5):E;I,I=64d42=64(d0-112DW)4;d0;DW;L0;K1,K1=1/3;Fmax;f1,212,,ncrncr=30f22L2cEIAK2Enmax(6):A;Lc;;E;nmax;K2,K2=018;f2,,d0nF70000(mmr/min)213,:Ktmin;Kba;Kc;KR;K1;Kk;KhK:K=11Ktmin+1Kba+1Kc+1KR+1K1+1Kk+1Kh(7),KR,K1,Kk,Kh,(7)K=11Ktmin+1Kba+1Kc(8):Ktmin=AElmax10-6=d2i4lmax10-6(9):A;lmax;di;EKbaKc,Ff,:=Ff/K(10)300mm,3800kg,600kg,630mm,20000mm/min,112000mm/min,,01012/300mm,01005,515/715kW,,,30min,715kW,,,3275N,70N,2206N;1333r/min,33800N10mm,32mm,,i=4,38000NC2,,60,6204/P5,Fcr=31074N,;ncr=3973r/min,2000r/min,d0n=6400070000,;K=94N/um,1m,C2,3008m,11[M]1:,199112,1[M]1:,199513,1[M]1:,199714,1[M]1:,19961:,,1964,,,:0738-4852268,13973842716:2003-11-0391220051No11©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.