In this study, a precise and high-efficient clinching assembly strategy was proposed to improve the automobile wheel hub bearing’s reliability of service quality consistency. The structure of the wheel hub bearing was first improved to enable the requirement of axial working clearance. During assembly, the accuracy of each bearing was monitored online via micro-laser sensor to achieve precise and consistent axial working clearance. The effect of processing parameters were analyzed via simulation analysis. According to simulation results, it only cost 2.35 s to complete assembly process and the optimal clamping force of 38.8 kN was generated. The prototype bearings were manufactured and exhibited a reliable service life of more than 250,000 km, which verified the reasonability of the proposed clinching assembly strategy. Additionally, the assembly mechanism was further analyzed. The ferrite in the clinched hub shaft end was gradually lengthened and the cementite aggregation was improved.

在这项研究中，提出了一种精确而高效的铆接装配策略，以提高汽车轮毂轴承的服务质量一致性的可靠性。轮毂轴承的结构首先进行了改进，以实现轴向工作间隙的要求。在组装过程中，通过微激光传感器在线监测每个轴承的精度，以实现精确一致的轴向工作间隙。通过仿真分析来分析加工参数的影响。根据仿真结果，仅需2.35 s即可完成组装过程，并产生了38.8 kN的最佳夹紧力。原型轴承已经制造出来，并且具有超过250,000 km的可靠使用寿命，这证明了所建议的铆接装配策略的合理性。另外，组装机理进一步分析。紧缩的轮毂轴端的铁素体逐渐变长，渗碳体的聚集得到改善。