标题： 考虑制造误差和滚道柔性时四点接触回转支承的载荷分布与摩擦力矩 显示英文标题

标题： Load distribution and friction torque in four-point contact slewing bearings considering manufacturing errors and ring flexibility

摘要： 本文介绍了一种计算考虑钢球预加载、制造误差和滚道柔性时四点接触回转支承载荷分布的方法。 该模型通过轴承势能的表达式及其最小化构建而成。 与刚性滚道假设相比，结果表明滚道变形在空载条件下会降低干扰，并且对载荷分布有显著影响，但在外部载荷作用下则不然。 此外，提出了一种新的摩擦力矩计算方法，与作者先前的方法相比，该方法具有更低的计算成本，因此可以更精确地获得结果而无需显著增加成本。 显示英文摘要

摘要： This work introduces a methodology for the calculation of the load distribution in four-point contact slewing bearings considering ball preload, manufacturing errors and ring flexibility. The model is built by the formulation and minimization of the potential energy of the bearing. Comparing with the rigid rings assumption, the results show that ring deformations involve lower interferences in idling conditions, and have a great effect in the load distribution, but not under external loads. Additionally, a new approach has been proposed for the calculation of the friction torque, which has lower computational cost in comparison to a previous approach by the authors, so more accurate results can be obtained due to refined calculations with no significant cost increase.