在轴承滚道的磨削中,砂轮与工件接触区域内的磨削力与热的耦合作用引起滚道表面层的材料结构和机械性能的变化,这可能导致研磨影响层的形成。磨削影响层对轴承的使用性能和疲劳寿命有显著影响。为了提高圆锥滚子轴承外圈内滚道的磨削表面质量,优化加工参数,本文对磨削影响层进行了研究。建立了圆锥滚子轴承外圈内滚道磨削的有限元仿真模型。对磨削温度场进行了模拟,以预测滚道磨削过程中的受影响层厚度。利用轴承滚道磨削当前工业工艺参数,通过磨削实验验证了模型的正确性。研究结果表明,圆锥滚子轴承外圈内滚道的最高磨削温度位于薄端边缘磨削弧区中心附近。随着工件速度和磨削深度的降低,最高研磨温度降低,并且研磨影响层的暗层厚度减小甚至不发生。研究结果可为圆锥滚子轴承滚道磨削提供理论指导和试验参考。
In the grinding of bearing raceways, the coupling effect between grinding force and heat in the contact area between the grinding wheel and the workpiece causes changes in the material structure and mechanical properties of the
raceway surface layer, which can lead to the formation of a grinding-affected layer. The grinding-affected layer has a significant impact on the service performance and fatigue life of bearings. In order to improve the ground surface quality of the outer-ring inner
raceway of tapered roller bearings and optimize the processing parameters, this paper presents a study on the grinding-affected layer. A finite element simulation model for grinding the outer-ring inner
raceway of the tapered roller bearing was established. The grinding temperature field was simulated to predict the affected-layer thickness during raceway grinding. The correctness of the model was verified through grinding experiments using the current industrial process parameters of bearing raceway grinding. The research results indicate that the highest grinding temperature of the outer-ring inner
raceway of the tapered roller bearing is located near the center of the grinding arc area on the thin end edge. As the workpiece speed and grinding depth decrease, the highest grinding temperature decreases, and the dark layer thickness of the grinding-affected layer decreases or even does not occur. The research results can provide theoretical guidance and experimental reference for grinding the
raceway of tapered roller bearings.