基于压力–位移曲线及最大压装力的节点过盈配合研究

Research on Node Interference Fit Based on Pressure Displacement Curve and Maximum Pressing Force

摘要: 转向架节点的配合方式主要是过盈配合，本文通过对转向架某转臂节点的压装过程进行分析，首先基于压力–位移曲线观察节点压装各阶段的受力特点，找出影响压装力的几个重要因素，再利用材料力学公式对节点外套的受力进行计算，然后将节点的实际工况载荷代入计算模型，得出节点配合面的过盈量理论值，最后结合转臂节点自身的性能特点构建过盈量计算的估算优化模型，经过与实际项目对比，研究结果具有准确性和合理性，对后续项目工作中节点过盈配合的设计选型具有指导意义。

Abstract: The fitting mode of the bogie node is mainly interference fit. This paper analyzes the press fitting process of a certain bogie boom node, first observes the force characteristics of each stage of the node press fitting based on the pressure displacement curve, finds out several important factors af-fecting the press fitting force, and then calculates the force on the node jacket using the Strength of materials formula, and then replaces the actual working condition load of the node into the calcula-tion model, Obtain the theoretical value of the interference amount of the node fitting surface, and finally construct an estimation optimization model for the interference amount calculation based on the performance characteristics of the rotating arm node itself. After comparison with actual pro-jects, the research results have accuracy and rationality, which has guiding significance for the de-sign and selection of node interference fit in subsequent project work.