Due to the brittle and hard nature of engineering ceramics, achieving efficient, precise, and low-cost machining of ceramic rings has long been a challenging issue. Taking zirconia ceramic rings as an example, this paper explores the material removal mechanism of engineering ceramics, aiming to achieve efficient and precise internal grinding of wide-gap rings using conventional narrow-grit-face-grinding-wheels. Subsequently, a 3D morphology model for material removal simulation and a kinematic model of the contact points between the grinding wheel and the workpiece were established, and the surface roughness was calculated. The results show that the final surface quality is closely related to the surface quality of a single grinding pass, and the simulation results generally agree with the trend of the experimental results. Increasing the workpiece rotation speed, reducing the abrasive size, and decreasing the grinding wheel feed rate are beneficial for improving the surface quality of zirconia ceramic rings after machining. The research findings provide a theoretical basis for the application of narrow-grit-face-grinding-wheels in the internal grinding of wide-gap ring parts and offer theoretical guidance for subsequent process optimization.

Keywords: Engineering ceramics, Removal model, Kinematic model, Surface quality.