Toward the temperature distribution on ball bearing inner rings during single-grit grinding

Abstract

The paper studies the post-grinding temperature distribution on the inner ring of ball bearing 7008C. A grinding model was proposed to calculate the temperature distribution using the finite element method. The grinding process was simplified based on abrasive grain grinding motion. Our calculation takes account of the non-linear variation in physical properties of the bearing material as the temperature changes and the effects of convective heat transfer in the surrounding environment. A rectangular heat source and cyclic loading method were used to simulate the energy input during grinding, and the grinding temperature fields under different processing parameters were obtained. The calculated temperature fields are in good agreement with experimental results. The proposed model was then utilized to analyze the influence of different processing parameters on the temperature distribution, providing a basis for predicting the phase change and analyzing the post-grinding residual stress. Through processing parameter adjustments, the optimal parameter combinations that do not lead to material phase changes were identified. We hope this analysis will shed some light on the optimization of the bearing grinding process.