Surface roughness in grinding outer ring inner raceway of tapered roller bearing

As the working interface of tapered roller bearing, the raceway surface quality directly affects the working performance and service life of bearings. In order to improve the surface quality of tapered roller bearing inner raceway grinding, improve the processing efficiency, and optimize the processing parameters, this paper conducted a study on the surface roughness of the inner raceway of the outer ring of tapered roller bearings during grinding, and established a prediction model for the grinding surface roughness. Firstly, the surface topography of grinding wheel was defined by using grinding wheel parameters. Secondly, the surface roughness prediction model of bearing raceway grinding was established based on the conversion relationship between bearing raceway grinding and surface grinding and the motion trajectory of particles on grinding wheel surface. Finally, the accuracy and rationality of the model were verified by using the current industrial process parameters of grinding bearing raceway through the grinding experiments. Based on the experimental and simulation results of grinding surface roughness, the influence law of grinding wheel linear speed, workpiece speed, and grinding depth on surface roughness was explored, and the surface roughness under high grinding wheel linear speed was predicted. The research results provide a theoretical basis for optimizing surface quality of tapered roller bearing outer ring inner raceway grinding. It is found that the surface roughness decreases with the increase of grinding wheel linear speed and the decrease of workpiece speed and grinding depth. The surface roughness at high linear speed of grinding wheel is predicted. The results show that when the workpiece speed is 300 rpm and the grinding depth is 0.3 & mu;m, the surface roughness decreases from 0.259 to 0.208 & mu;m as the grinding wheel linear speed increases from 60 to 100 m s(-1), which can provide theoretical guidance for further improving the surface quality.