The Effects of Centrifugal Force on Interference Fit between High Speed Spindle and Bearing Inner Ring

A mathematical model based on the elasticity is used to calculate the deformation and the initial magnitude of interference between high speed thick-walled spindle and thin-walled bearing inner ring,the quantitative relationship of spindle speed and interference tolerance is also showed.Based on the contact nonlinear FEM,a 3D finite element mechanical model for interference fit between spindle and bearing inner ring at high rotating speed is established.The effects of the centrifugal force on contact stress and interference tolerance on the interference-fitting surfaces are simulated.