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宋爱荣 《机械工人(冷加工)》1999,(12):26-27
空心圆柱滚子轴承结构很简单,见图1。它由带挡边的外圈、空心圆柱滚子及轴承内圈组成(也可以是内圈带挡边而外圈无挡边)。内圈滚道直径比装在外圈滚道的滚子内复圆直径要大些。因此轴承装置后空心滚子受压缩而略呈椭圆形。空心滚子同内外滚道间产生了相互作用力——预负荷。轴承回转时,空心滚子在预负荷作用下紧压在内外滚道上作无滑动的纯滚动。这种轴承结构上的特点是: 相似文献
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由推力调心滚子轴承设计原理,推出了轴圈滚道圆弧母线中心坐标的精确计算公式。为便于加工,轴圈挡边增加了直挡边设计,由几何关系确定了保持架外圆柱面直径。改进设计后的轴承,结构合理,加工方便。附图2幅,参考文献6篇。 相似文献
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根据流体润滑理论,本文建立了滚子轴承挡边-滚子端面润滑,并编制了有限元计算程序,文中详细分析了端面形状,偏斜角,挡边支托角,间隙等因素对油膜压力的影响。并对滚子偏斜稳定性以及轴向窜动问题作了初步探讨。 相似文献
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降低圆锥滚子轴承摩擦力矩的方法 总被引:1,自引:0,他引:1
分析了圆锥滚子轴承摩擦力矩的产生原因,指出:在不改变其设计结构,不减小轴承额定载荷的前提下,通过加大内滚道、外滚道和滚子的凸度,合理选择凸度形状,有效控制滚子球基面半径的散差和挡边角度,降低挡边和球基面的粗糙度,可大幅度降低圆锥滚子轴承的摩擦力矩。 相似文献
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圆锥滚子轴承挡边强度计算 总被引:2,自引:2,他引:0
在对圆锥滚子轴承内圈大挡边的受力作适当简化的基础上,应用疲劳强度理论,建立了用于挡边厚度设计的强度条件和强度计算式。附图4幅,参考文献4篇。 相似文献
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内圈单挡边带平挡圈圆柱滚子轴承原工艺加工时公差难保证,且经常出现滚子压死现象。工艺改进后不但克服了加工困难,而且滚子压死率降为零。 相似文献
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基于圆锥滚子轴承纯滚动设计理论,根据内圈及滚子的几何关系推导了内圈大挡边与滚子球基面间接触点位置尺寸的精确及近似计算关系式;结合轴承制造工艺分析了生产过程中大挡边与滚子球基面间接触点位置的控制;最后进行了实例介绍。 相似文献
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圆柱滚子轴承的动力学分析 总被引:1,自引:0,他引:1
介绍了圆柱滚子轴承的3自由度模型的建立方法,分析了滚子与套圈、滚子与保持架、套圈与保持架间的接触或碰撞关系.介绍了使用Fortran90编写的轴承动力学分析软件包BA的程序架构.得到了滚子的运动速度、滚子与内、外圈间的接触载荷与保持架质心的运动轨迹等,并通过案例分析了圆柱滚子轴承的动力学性能,验证了BA的分析能力. 相似文献
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Tests were run to compare the fatigue life of two-row tapered roller bearings to that of spherical roller bearings. Both bearing types had an outer diameter of 110 mm with the spherical roller bearing having a 22 percent larger dynamic radial load rating than the tapered roller bearings. All tests were run at 165 percent of the respective two-row dynamic radial load ratings. The results show that both the indirect mounting (double cup or outer ring) and the direct mounting (double cone or inner ring) tapered roller bearings gave significantly better fatigue lives than the spherical roller bearings. These results appear to contradict the present ISO 281 standard which assigns a 1.15 bm rating factor to spherical roller bearings compared to a bm rating factor of 1.10 for that of tapered roller bearings. 相似文献
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The paper proposes a comprehensive model to predict the skew movement of a roller in tapered roller bearings. Numerical solutions are given on a LM48548/LM48510 bearing. The effect of the shaft speed, ring misalignment, and lubricant temperature on the roller skew angle is presented and compared to the experimental data available in the literature. The results indicate that the skew angle depends first on the misalignment angle between the cup and the cone. The roller skew is also greatly influenced by the traction at the roller-flange contact, the skew angle increasing with the traction at this contact, and by the geometry of the roller end. 相似文献
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S. V. Shishkin 《Russian Engineering Research》2020,40(3):202-207
The fretting-resistance curve of roller bearings may be plotted analogously to the fatigue curve. The damage is assessed in terms of the latent period prior to adhesion of the working surfaces, according to visual inspection. The limit of fretting resistance depends on the type of lubricant, the relative displacement, and the test base adopted. The resistance to mechanical and corrosion damage is significantly increased if regular relief is applied to the races of the roller bearings. 相似文献
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