Reduuction of Sticking in a Linear-Guideway Type Recirculating Ball Bearing
Reduuction of Sticking in a Linear-Guideway Type Recirculating Ball Bearing
复制标题
减少直线导轨型循环球轴承的粘着
DOI：
10.1115/1.4041210
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发表时间：
2019
期刊：
影响因子：
--
通讯作者：
Yusuke Ueki
中科院分区：
文献类型：
--
作者：
Hiroyuki Ohta;Guillermo Andres Guajardo Dueñas;Yusuke Ueki
本文论述了直线导轨式循环球轴承(直线轴承)的粘滞现象的减少，这是直线轴承往复短行程运行时所需驱动力的显著增加。首先，测量了不同尺寸和形状的A-E五种托架体类型的直线轴承在滚动力矩载荷作用下的驱动力。同时，观察了球在负荷区的位置。实验结果表明，无论车体类型如何，随着最大线速度和行程长度的增加，驱动力和球间距(球与球之间围绕凸侧负荷区中心的距离)的增加率减小，几乎不会发生粘连。此外，车体类型对粘连的发生也有影响。最后，为了考察车体类型、车体变形与卡滞发生的关系，用有限元方法计算了车体变形(由螺栓预紧力矩和紧固力矩引起)。有限元分析结果表明，车体变形性较强的车体有减少粘结的趋势。
This paper deals with the reduction of sticking in a linear-guideway type recirculating ball bearing (linear bearing), which is the significant increase in the required driving force for a linear bearing in a back-and-forth short stroke operation. First, the driving force of a linear bearing with five carriage-body types (A–E, having different dimensions and shapes) under rolling moment load was measured. Simultaneously, the ball's position in the load zone was observed. The experimental results showed that regardless of the carriage-body types, the increasing rate of the driving force and the interspace (space between balls around the center of the load zone on the raised side) decreases and sticking tends to hardly occur as the maximum linear velocity and the stroke length increase. Also, the occurrence of sticking was affected by the carriage-body types. Finally, to examine the relationship of carriage-body types, carriage-body deformation, and the occurrence of sticking, the carriage-body deformation (caused by preloading and tightening torque of bolts) was calculated by finite element method (FEM). The FEM results showed that carriage-body type, which is more deformable, had a tendency to reduce sticking.