球导轨型直线运动球轴承结构与寿命计算方法

Structure and Life Calculation Method for Ball Guide Type Linear Motion Ball Bearings

在分析球花键型直线运动球轴承结构的基础上,提出一种新结构的球导轨型直线运动球轴承,并以轴承疲劳寿命Weibull分布理论为基础,对球导轨型直线运动球轴承的承载能力和疲劳寿命计算方法进行了探讨。结果表明:与球花键型直线运动球轴承相比,球导轨型直线运动球轴承结构简单,能够承受较大的扭矩载荷。

A new structure of ball guide type linear motion ball bearing is proposed based on structural analysis of ball spline type linear motion ball bearing. The load capacity and fatigue life calculation method for ball guide type linear motion ball bearing are discussed based on Weibull distribution theory of bearing fatigue life. The result shows that compared with ball spline type linear motion ball bearings, the ball guide type linear motion ball bearings have simple structure and are able to bear larger torque load.