汽车轮毂轴承单元轴铆合铆头倾角有限元分析

摘要

Aimed at the crack,scratch and other quality problems easily occurred in shaft riveting process of third generation hub bearing unit,the finite element simulation model of hub bearing is established with DEFORM-3D software.Through the simulation,the maximum stress,the axial force acted on the rivet head and the inner clamping force are analyzed under different rivet head inclination angles.The stress on the mandrel is smaller and axial force subjected by the rivet head and clamping force subjected by the inner ring is more stable under the optimal riveting angle in shaft riveting process.%针对第3代汽车轮毂轴承单元在轴铆合装配工艺中容易出现裂纹、擦伤等质量问题,采用DEFORM-3D软件建立轮毂轴承单元有限元仿真模型.通过仿真模拟,比较在不同铆合倾角下铆合时芯轴所受最大应力、铆头所受轴向力以及内圈卡紧力的影响规律,得出了使芯轴所受应力较小、轴铆合过程中铆头所受轴向力和内圈所受卡紧力较稳定的最优铆合倾角.