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首页> 外文会议>ASME international mechanical engineering congress and exposition;IMECE2008 >DETERMINATION OF OPTIMUM HOLLOWNESS FOR HOLLOW CYLINDRICAL ROLLING ELEMENT BEARING
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DETERMINATION OF OPTIMUM HOLLOWNESS FOR HOLLOW CYLINDRICAL ROLLING ELEMENT BEARING

机译：确定空心圆柱滚子轴承的最佳空心度

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Hollow-cylindrical-roller bearings are intended for light load applications, including all types of grinding, ' machining, and milling spindles. They use hollow cylindrical rollers instead of solid rollers. These provide significant advantages over standard bearings, such as reduced vibration, low-radial runout, better radial stiffness, higher operating speeds, and lower operating temperatures.Investigators have proposed that under large normal loads a hollow element with a sufficiently thin wall thickness will deflect appreciably more than a solid element of the same size. An improvement in load distribution and thus load capacity may be realized, as well as contact stress is also reduced considerably by using a bearing with hollow rolling elements. Since for hollow rolling element no method is available for the calculation of contact stresses and deformation. The contact stresses in hollow members are often calculated by using the same equations and procedures as for solid specimens. This approach seems to be incorrect.Recently, the Finite Element Analysis (FEA) has been successfully used to evaluate contact problems for the roller bearings. Investigations have been made for hollow rollers in pure normal loading. Different hollowness percentages ranging from 0% and 30% to 80% have been analysed in FEA software to find the optimum percentage hollowness which gives minimum stress and finally longest fatigue life.
机译：空心圆柱滚子轴承用于轻负载应用，包括所有类型的研磨，“加工和铣削锭。它们使用空心圆柱辊而不是实心辊。这些在标准轴承上提供了显着的优点，例如降低振动，低径向跳动，更好的径向刚度，更高的操作速度和更低的工作温度。 研究人员提出，在大的正常载荷下，具有足够薄壁厚度的中空元件将比相同尺寸的固体元素偏转。可以实现负载分布和因此负载能力的改善，并且通过使用具有中空滚动元件的轴承也可以显着地降低接触应力。由于对于中空滚动元件，没有用于计算接触应力和变形的方法。中空构件中的接触应力通常通过使用与固体样品相同的方程和程序来计算。这种方法似乎是不正确的。 最近，有限元分析（FEA）已成功用于评估滚子轴承的接触问题。在纯正正常载荷中的空心辊进行了调查。在FEA软件中分析了0％和30％至80％的不同的富裕百分比，以找到最佳百分比的空调，其给出最小的压力，最终疲劳寿命最长。

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