_滚动直线导轨副动态特性的试验研究

OLE + k周传宏,孙健利( S/vCAD,q 430074)K1:通过滚动直线导轨副动态特性的试验,结合理论分析,发现随着滑块数目、跨距的增加和阻尼的加大,工作台系统的共振频率将增大。此外对滚动直线导轨副动态特性进行了深入的研究,其结论对实际生产有指导作用。1oM:滚动直线导轨副;动态特性;幅频特性ms |:TH132.1 DS M :A cI|:1007-9483(2001)02-0014-02Study on Dynamic Characteristics of RollingGuides Used in LinearMotionZHOU Chuan-hong , S UN Jian -li(Huazhong Institute of Technology, Hubei Wuhan, 430074, China)Abstract:It describes the experiment and theory research dynamic characteristics about the rolling guides used in Linear M otion,the result of investigation is good for developing new type of this Guides.Key words:Linear M otion Guides;Dynamic Characteristics;Amplitude-frequency Characteristics1 k “ k “:OLET +,1 、F qE D。k em m1 U。图1 试验的装置简图YVm1 U k , VF H =Y wL,V y fM,L V Y wL。m1, L1 =135mm, L2 =75mm。2 ks/ k mB5 6Q B,i O 6Q (。 kq|HTSD30AAE。2.1 一个滑块的试验和分析m2 U,OLEFP3 ,c Y wL m2 U。图2 预加载荷为 P3 及测点 c的试验幅频响应曲线图c 3;z、 x、 y, + wLQ3 qf z, f rx , f ry#ME DqE D“ z , rx, ry, Cz, Crx ,Cry 。FP3 , k :fz =1 370Hz;f rx =260Hz;f ry =420Hz;z =0.007;rx =0.014;ry =0.018;Cz =777Ns/ m;Crx =0.425 Nms/ rad;Cry =4.009Nms/ rad。m3 图3 预加载荷为P 1和 P3及测点c 的理论计算幅频响应曲线图l :2000-08-21; :2000-11-20Te:.(1971-), 3,q , S/vp V,Z_/# 1。14 2001 M3 !9/ 30 2 9 Y wL(v ID 1 9 ), qf z =1 300Hz, f rx =280Hz, f ry =390Hz,1 。 6 kE D“ , V 9 _。图4 预加载荷为 P1 ,测点 c的试验幅频响应曲线m4 U,FP1(P 1 P3), k :fz =1 360Hz;f rx =255Hz;f ry =415Hz;z =0.006 5;rx =0.013;ry =0.017;C z =716Ns/m;Crx =0.387Nms/ rad;Cry =3.741Nms/ rad。m3 9 Y wL, qfz =1 090Hz, f rx =250Hz, f ry =320Hz。 k 9 1 ,M v。 6|FP 1P3 kM1 ,?C Ml,i 9 *“M v。 I ;? 1M kT,V sisy。图5 导轨副静刚度曲线示意图m5 U,OLE wLi L, 9 eL, V sS=,| eL。B7,FP H,F KvTS 0 2.828 PW,i OBS, EKP = 2.828P2.828P H 3M “ 9 KP11KP3l。 7Vm5 V?C:V (1 Q) H,F wL M ,KP1 KP3 。 kH,OLE s , HW =, v, KP1 KP3 , q1 。 6,FP3 HE D“ 1FP1 HE D“ v 。2.2 2个滑块及小跨距装置的试验和分析图6 2个滑块装置图m6 U,2 vC FBlT ,QS k。N HL =120mm, jm m6 U。FP3 , k :fz =1 500Hz;f rx =680Hz;f ry =1 220Hz;z =0.013;rx =0.014;ry =0.015;Cz =1 580Ns/m;Crx =1.113Nms/ rad;Cry =9.705Nms/ rad。 9 Y wL, qf z =1 530Hz, f rx =605Hz, f ry =1 200Hz,1 。FP1(P 1 P3), k :f z =1 490Hz;f rx =670Hz、 f ry =1 210Hz;z =0.010;rx =0.013;ry =0.014;Cz =1 207Ns/m;Crx =1.018Nms/ rad;Cry =8.983Nms/ rad。|F图 7 预加载荷为 P3、两个滑块、小跨距装置测点c 的试验幅频响应曲线图P1P3 kM1 ,?C M l。| B v ks M1 ,?C q A4,E D“ +9v 1。2.3 2个滑块及大跨距装置的试验和分析|LMv200mm,QS k, TFP3 , k :fz =1 400Hz;f rx =620Hz;f ry =2 780Hz;z =0.015;rx =0.035;ry =0.008;Cz =1 701Ns/ m;Crx =2.536Nms/ rad;Cry =11.794 Nms/rad。 9 qfz =1 530Hz, f rx =605Hz, f ry =2 720Hz,1 。FP1(P 1 P3), k :f z =1 280Hz;f rx =610Hz;f ry =2 120Hz;z =0.011;rx =0.024;ry =0.010;Cz =1 141Ns/m;Crx =1.711Nms/ rad;Cry =11.242Nms/ rad。|FP1P3 kM1 ,?C M1 v,FMv, qE D“ Mv。 B v ksFP 1P 3 kMl d ), -%XBX?Ci , i V B(1 Q),5KP1 KP3, qM1 v 。| 2 v#l t ks M1 ,?C qf z A4, f rx, f ryMv,E D“ 4 A。3 YV k V / :(1) “ v “9F,T “d qED“ A4。 6 P v “M, “ vWW 9v,“d