圆柱滚子轴承故障分析与改进

Analysis and Improvement of Cylindrical Roller Bearing Failure

圆柱滚子轴承在使用过程中发生故障,滚子一侧发生剥落,内圈滚道发生挤压磨损。对故障件进行形貌分析、轴承复查、内圈与外圈倾斜角测量、轴承抗倾斜角及接触应力计算。结果表明:轴承在工作过程中产生较大倾斜角,滚子轮廓与内圈滚道边缘接触,产生应力集中,导致滚子剥落与内圈滚道挤压磨损。通过增加滚道长度及滚子凸度量的改进措施,防止边缘接触,降低接触应力,可预防此类故障。

Cylindrical Roller bearing of an engine failed during use,one side of the roller occurs spalling,and the inner raceway is squeezed and worn.Carried out the analysis of the fault morphology,the bearing review,the measurement of the tilted angle of the inner ring and the outer ring,the bearing anti-tilted angle calculation and the contact stress calculation.The results show that the bearing has a large tilted angle during the working process,and the roller profile is in contact with the edge of the inner raceway,resulting in stress concentration,causing the roller to spalling and the inner ring raceway to press and wear.Improved measures to increase the raceway length and the roller convexity to prevent edge contact,reduce contact stress,and prevent such failures.