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针对某型发动机深沟球轴承保持架脱落故障现象,对失效轴承进行检查分析,建立了轴承保持架脱落故障树,详细分析了故障产生的原因,结果表明:发动机发出异常声音是由空气起动机传动轴后轴承损坏引起的。铆钉冷冲压端钉头裂纹、轴承保持架兜孔边的周向错位量大、铆钉与铆钉孔的偏心量大、两半保持架铆钉处的贴合缝隙大是造成轴承保持架分离脱落的可能原因,根据故障原因提出了工艺改进方法,对其他类型轴承失效分析具有一定的启示作用。
Aeroengine deep groove ball bearing cage shedding failure phenomenon, the failure bearing inspection and analysis, the establishment of the bearing cage shedding fault tree, a detailed analysis of the causes of the fault, the results show that: the engine is an abnormal sound emitted by the air starter After the drive shaft damage caused by the bearing. Rivet cold stamping nail head crack, bearing cage pocket edge of the circumferential displacement, rivet and rivet hole eccentricity large, two cage rivets at the fit gap is caused by the possibility of bearing cage separation off Reason, according to the cause of the failure process improvement method proposed, for other types of bearing failure analysis has some implications.