两器生产线升降机直线轴承破损的分析及预防措施

Analysis and Preventive Measures of Damage of Linear Bearing of Lift in Two-Piece Production Line

本文旨在通过对两器生产线升降机使用情况的分析,探讨直线轴承破损的原因。为此,我们采用了多种先进的失效分析方法,包括金相组织分析、材料成分分析、装配和载荷情况等。经过分析,我们得出结论:导向轴设计公差选用不当,密封圈与导向轴长期过盈拉扯,加上现场环境恶劣粉尘和杂质过多,导致密封圈破损,从而导致直线轴承保持架断裂破损。本文的研究成果为直线轴承的设计选型及组装工艺提供了指导和建议,同时也对材料断裂的分析过程进行了详细介绍。

The purpose of this paper is to explore the causes of linear bearing damage through the analysis of the use of the elevator in the two-piece production line. To this end, we use a variety of advanced failure analysis methods,including metallographic structure analysis, material composition analysis, assembly and load conditions. After analysis,we come to the conclusion that improper design tolerance of the guide shaft, long-term interference tension between the seal ring and the guide shaft, coupled with excessive dust and impurities in the harsh field environment, lead to the damage of the seal ring, which leads to the fracture of the linear bearing cage. The research results of this paper provide guidance and suggestions for the design, selection and assembly process of linear bearings, and also introduce the analysis process of material fracture in detail.