关节轴承装配工艺仿真与承载能力验证

Simulation of Assembly Process and Verification of Load Capacity of Spherical Plain Bearing

对外圈带环槽的自润滑关节轴承铆压装配过程进行有限元仿真,研究轴承座倒角尺寸、压头压入深度对翻边形状的影响,采用位移均匀加载方式分析轴承装配过程的轴承和轴承座变形,计算轴承装配时所需铆压力。通过对装配后的关节轴承从座孔脱出过程进行动态仿真,估算轴承装配后的轴向承载能力,得到轴向脱出力与压头位移的关系曲线,并对脱出力的大小进行了试验验证,实测的最大脱出力值与计算值基本吻合,发现计算得到的脱出力-位移曲线上对应最大脱出力的位移值与试验机上的实测值之间存在滞后误差,分析了误差产生原因。

Finite element simulation was carried out for the assembly process of riveting of self-lubricating spherical plain bearing with ring grooves in outer ring and bearing seat to study the influence of chamfer size of bearing seat and indentation depth of indenter on flanging shape. The deformation of bearing and bearing seat was analyzed by means of uniform loading during the assembly process to calculate the riveting force. The dynamic simulation of the process of the bearing pulling out from the seat hole was carried out to estimate the axial load capacity of the bearing. The relationship curve between the axial pull-out force and the displacement of the indenter was determined and the calculated value was verified by experiment. The measured maximum pull-out force by experiment basically tallies with the calculated value. It is found that there were lag errors between the measured and calculated values of the axial displacement corresponding to the maximum pull-out force, and the causes of the errors were analyzed.