基于内圈廓形和径向载荷的轴承旋转精度预测
发布时间：2018-10-30 07:42
【摘要】：随着机械工业的发展,诸多应用领域对滚动轴承的旋转精度提出了越来越高的要求。滚动轴承的旋转精度既体现轴承运转时的工作性能,也反映了制造精度。因此,对滚动轴承旋转精度的影响因素及变化规律进行分析,在此基础上预测轴承的旋转精度,研究结果对轴承的设计制造具有指导意义。 本文以圆柱滚子轴承为研究对象,首先分析了圆度、波纹度等几何精度和工况条件对轴承旋转精度的影响,从影响旋转精度的诸多因素中选择内圈滚道几何参数、结构参数及径向载荷进行重点分析。根据轴承零件的运动几何关系,分别建立自由状态和载荷条件下圆柱滚子轴承的数学模型,详细阐述了算法原理及步骤,利用Visual C++软件编制相应的程序,对圆柱滚子轴承的运动状态进行数值仿真和模拟,并通过特殊点法验证了程序的正确性。然后分析了内滚道圆度误差值、谐波阶次、滚子个数、径向游隙,以及径向载荷对轴承旋转精度的作用规律。结果表明,滚道的圆度误差和径向游隙对轴承旋转精度的影响较大,旋转精度随圆度误差值和径向游隙的增大而降低;低阶谐波对轴承旋转精度的影响比较明显,高阶谐波影响程度减小;滚子个数对轴承旋转精度也有一定的影响,滚子个数的增多,旋转精度提高,而且与内圈滚道有效接触的滚子数增多;在其他因素保持不变情况下,径向载荷增大,旋转精度降低。 通过数值仿真和理论验证相结合的方法,对影响圆柱滚子轴承旋转精度的因素进行分析,确立内圈滚道几何参数、结构参数及径向载荷与轴承旋转精度之间的关系。本研究结果,对建立圆柱滚子轴承旋转精度的预测理论和评价体系,设计开发高精度的滚动轴承产品有积极作用。
[Abstract]:With the development of mechanical industry, more and more requirements are put forward for the rotary accuracy of rolling bearings in many application fields. The rotary accuracy of rolling bearing not only reflects the working performance of bearing in operation, but also reflects the manufacturing accuracy. Therefore, the influence factors and variation rules of rolling bearing rotation accuracy are analyzed, and on this basis, the bearing rotation accuracy is predicted, and the research results are of guiding significance to the design and manufacture of bearings. In this paper, the cylindrical roller bearing is taken as the research object. Firstly, the effects of the geometric accuracy and working conditions, such as roundness and corrugation, on the rotation accuracy of the bearing are analyzed, and the inner ring raceway geometric parameters are selected from many factors that affect the rotation accuracy. Structural parameters and radial load are analyzed emphatically. According to the geometric relation of motion of bearing parts, the mathematical models of cylindrical roller bearing under free state and load condition are established, the principle and steps of the algorithm are expounded in detail, and the corresponding program is compiled by using Visual C software. The motion state of cylindrical roller bearing is simulated and simulated, and the program is verified by special point method. Then, the effects of internal raceway roundness error, harmonic order, number of rollers, radial clearance and radial load on bearing rotation accuracy are analyzed. The results show that the raceway roundness error and radial clearance have great influence on the bearing rotation accuracy, and the rotation accuracy decreases with the increase of roundness error and radial clearance. The influence of low order harmonics on bearing rotation accuracy is obvious, and the influence degree of higher order harmonics is reduced. The number of rollers has a certain effect on the bearing rotation accuracy, the number of rollers increases with the increase of roller number, and the number of rollers in effective contact with the inner ring raceway increases. Under the condition that other factors remain unchanged, the radial load increases and the rotation precision decreases. Through the combination of numerical simulation and theoretical verification, the factors affecting the rotation accuracy of cylindrical roller bearing are analyzed, and the relationship between the inner ring raceway geometry parameters, structural parameters and radial load and bearing rotation accuracy is established. The results of this study have a positive effect on the establishment of prediction theory and evaluation system for the rotary accuracy of cylindrical roller bearings and the design and development of high precision rolling bearing products.
【学位授予单位】：河南科技大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TH133.33
本文编号：2299378
[Abstract]:With the development of mechanical industry, more and more requirements are put forward for the rotary accuracy of rolling bearings in many application fields. The rotary accuracy of rolling bearing not only reflects the working performance of bearing in operation, but also reflects the manufacturing accuracy. Therefore, the influence factors and variation rules of rolling bearing rotation accuracy are analyzed, and on this basis, the bearing rotation accuracy is predicted, and the research results are of guiding significance to the design and manufacture of bearings. In this paper, the cylindrical roller bearing is taken as the research object. Firstly, the effects of the geometric accuracy and working conditions, such as roundness and corrugation, on the rotation accuracy of the bearing are analyzed, and the inner ring raceway geometric parameters are selected from many factors that affect the rotation accuracy. Structural parameters and radial load are analyzed emphatically. According to the geometric relation of motion of bearing parts, the mathematical models of cylindrical roller bearing under free state and load condition are established, the principle and steps of the algorithm are expounded in detail, and the corresponding program is compiled by using Visual C software. The motion state of cylindrical roller bearing is simulated and simulated, and the program is verified by special point method. Then, the effects of internal raceway roundness error, harmonic order, number of rollers, radial clearance and radial load on bearing rotation accuracy are analyzed. The results show that the raceway roundness error and radial clearance have great influence on the bearing rotation accuracy, and the rotation accuracy decreases with the increase of roundness error and radial clearance. The influence of low order harmonics on bearing rotation accuracy is obvious, and the influence degree of higher order harmonics is reduced. The number of rollers has a certain effect on the bearing rotation accuracy, the number of rollers increases with the increase of roller number, and the number of rollers in effective contact with the inner ring raceway increases. Under the condition that other factors remain unchanged, the radial load increases and the rotation precision decreases. Through the combination of numerical simulation and theoretical verification, the factors affecting the rotation accuracy of cylindrical roller bearing are analyzed, and the relationship between the inner ring raceway geometry parameters, structural parameters and radial load and bearing rotation accuracy is established. The results of this study have a positive effect on the establishment of prediction theory and evaluation system for the rotary accuracy of cylindrical roller bearings and the design and development of high precision rolling bearing products.
【学位授予单位】：河南科技大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TH133.33
【引证文献】
相关硕士学位论文 前1条
1 王宝坤;圆柱滚子轴承元件几何误差对轴承性能的影响[D];大连理工大学;2013年
，本文编号：2299378
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