Theoretical analysis and numerical estimation of stiffness matrix of angular contact ball bearing in spindle-bearing system

In order to study the angular contact ball bearing of the test table's spindle-bearing system, a precision mathematical model of stiffness matrix was established by using the theory of geometry and kinematics of rolling element bearing and Hertzian contact stress, and a comprehensive bearing stiffness matrix was proposed. The numerical arithmetic to estimate the deflections of the loads applied to the bearing is also discussed. The calculating software to solve the stiffness matrix of bearing was developed from the theoretical model. The study provides a basis for the boundary condition processing through the finite element analysis of the spindle-bearing system.