弹性复合圆柱滚子轴承承载性能的理论研究

Research of Carrying Capacity of Elastic Composite Cylindrical Roller Bearing

根据组合创新原理,通过对圆柱滚子轴承结构的创新研究,提出了一种在空心圆柱滚动体中嵌入PTFE材料的弹性复合圆柱滚子轴承新结构的设计方法。选择轻载和重载两种工况,在利用有限元软件计算确定三种滚动体的最优结构尺寸的前提下,分析对比了三种圆柱滚子轴承的接触应力、等效应力以及弯曲应力。结果表明:在轻载和重载情况下,弹性复合圆柱滚子轴承和空心圆柱滚子轴承的接触应力和等效应力基本接近,但弯曲应力明显降低,其中轻载工况下降低了17.1%,重载工况下降低了27.7%。说明了弹性复合滚子轴承的承载能力要优于实心圆柱滚子轴承和空心圆柱滚子轴承。

According to the principle of combination and innovation, the study on structure innovation of cylindrical miler bearing is carried out, and a new method of structure design of elastic composite cylindrical miler bearing which embedded PTFE in the hollow cylindrical roller is put forward. Under the low load and heavy load cases, by calculating and determining the best sizes of the three rollers with finite element software, analysis and comparisons of the contact stress, equivalent effective stress and bending stress of the three cylindrical miler beatings are carried out. Results show that, under the low load and heavy load cases, the contact stress and the equivalent effective stress of the elastic composite cylindrical roller bearing are close to those of the hollow cylindrical roller bearing, whereas the bend- ing stress of the elastic composite cylindrical miler bearing is obviously lower than that of the hollow cylindrical miler bearing, with 17.1% lower under the low load case and 27.7% lower under the heavy load ease. The carrying capacity of the elastic composite cylindrical miler bearing is better than the solid cylindrical roller bearing and the hollow cylindrical roller bearing.