Abstract Wear quantify is an important parameter for wear research. However, the measurement of wear is a key problem in the theoretical study of large - mass regular surface friction pairs with uneven wear. So, this paper proposes a method based on the measurement of multi-notch chord length, which realizes the indirect measurement of the surface wear of semi-spherical friction pair. The relationships among measurement error, notches number, notches distribution of the friction pair in different diameters are derived by theoretical calculation, Then the experimental results show that the measurement precision of wear increases with the increase of the number of surface notch holes, but the increment of precision decreases gradually until convergence, and the function between the optimal number of scratches and the measuring accuracy and the radius of friction pair is given. By setting the number of scratches of the calculated results in advance during the manufacturing process, and combining the corresponding calculation formula and the field measurement results, the fast measurement of the wear quantify of the hemispherical bearing is completed.

中文翻译：

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基于多缺口测量的闸底枢轴表面磨损研究

摘要 磨损量化是磨损研究的一个重要参数。然而，磨损的测量是大质量规则表面不均匀磨损摩擦副理论研究的关键问题。为此，本文提出了一种基于多槽弦长测量的方法，实现了半球形摩擦副表面磨损的间接测量。通过理论计算推导出摩擦副在不同直径下的测量误差、缺口数、缺口分布之间的关系，实验结果表明磨损测量精度随着表面缺口孔数的增加而增加，但增量的精度逐渐降低直到收敛，并给出了最佳划痕数与测量精度和摩擦副半径之间的关系。通过在制造过程中预先设定计算结果的划痕数，并结合相应的计算公式和现场测量结果，完成对半球轴承磨损量化的快速测量。