关键词: 圆锥滚子轴承；刚度计算；修正模型；接触变形

Abstract: The calculation of bearing contact force and stiffness is a nonlinear mechanical problem. This paper calculates the roller contact force and contact stiffness of tapered roller bearing based on the modified palmgren model. Through the calculation and superposition of the contact forces and moments of all rollers and the contact deformation caused by them on the inner and outer rings of the bearing, the stiffness model of tapered roller bearings is derived in this paper. In order to verify the model, this paper establishes a finite element model of tapered roller bearing with a large number of grids and high accuracy, calculates the stress distribution of the roller and outer ring, identifies the bearing stiffness by extracting the contact force and contact deformation from the finite element calculation results, and compares the calculation results with the model established in this paper. The results show that the model established in this paper is accurate.

Key words: Tapered roller bearing; Stiffness calculation; Modified model; Contact deformation