圆柱滚子轴承织构化内圈挡边摩擦特性分析

发布时间：2018-04-30 04:03

本文选题：圆柱滚子轴承 + 表面织构　；参考：《机械设计》2017年09期

【摘要】：将表面织构应用到圆柱滚子轴承内圈挡边,建立了织构化内圈挡边-滚子端面油膜润滑的数学模型。计算分析了微凹坑对套圈挡边-滚子端面油膜压力分布的影响,分析了微凹坑参数和工况条件对摩擦因数的影响规律;试验研究了在不同载荷作用下微凹坑面积率、凹坑深度和直径对轴承温升的影响。结果表明:圆柱形微凹坑可明显改善套圈挡边-滚子端面的油膜压力分布;在不同载荷下均存在最优凹坑面积率、最优凹坑直径及深度,且随着载荷增大,直径较大组织构表现出更优的减摩性能。与无织构组相比,当轴向载荷为40 N,内圈挡边分布直径为0.3 mm,深度为1.0μm,面积率为18%的圆柱形微凹坑时,轴承挡边最高温升降幅可达46.8%。
[Abstract]:The surface texture is applied to the inner ring of cylindrical roller bearing, and the mathematical model of oil film lubrication of textured inner ring is established. The effect of microcrater on the distribution of oil film pressure on the flange of the ring and the end face of the roller is calculated and analyzed, and the influence of the parameters of the microcrater and the working conditions on the friction coefficient is analyzed, and the area rate of the microcrater under different loads is experimentally studied. Effect of pit depth and diameter on bearing temperature rise. The results show that the oil film pressure distribution on the flange of the ring flange and the end face of the roller can be obviously improved by the cylindrical microcrater, and the optimum pit area ratio, optimum pit diameter and depth exist under different loads, and with the increase of the load, the oil film pressure distribution can be improved obviously. The larger diameter structure shows better antifriction performance. When the axial load is 40 N, the diameter of the inner ring flange is 0.3 mm, the depth is 1.0 渭 m, and the area ratio is 18%, the maximum temperature rise of the bearing flange can reach 46.8%.
【作者单位】：河南科技大学机电工程学院;
【基金】：国家自然科学基金-联合基金资助项目(U1404517) 清华大学摩擦学国家重点实验室开放基金资助项目(SKLTKF13A03)
【分类号】：TH133.33

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