Material removal depth model of titanium alloy ground by flap wheel

The surface removal of the titanium alloy was difficult to control when grinding with flap wheels. Therefore, a material removal depth model was established, by theoretical methods such as the Preston equation, Hertz contact theory, and line contact deformation, from the perspective of the moving process of flap wheel polishing. Firstly, by analyzing the movement of the flap wheel and the material removal process in the grinding process and simplifying the grinding process through the Preston equation, the relationship between the material removal depth and the linear velocity, the contact pressure, and the feed speed of the flap wheel was obtained. Secondly, the relationship between contact pressure and preload was obtained through Hertz contact theory and line contact deformation, and then the theoretical model of material removal depth was constructed by the preload substituted into the contact pressure. Finally, the orthogonal experiments and the single-factor experiments were used to verify the accuracy of the theoretical model. And the impact of various parameters on the flap wheel grinding and polishing removal depth was analyzed by range analysis. The results show that the material removal depth is directly proportional to the preload and the linear speed of the page wheel, inversely proportional to the feed speed of the page wheel, and the influence of various parameters on the grinding and polishing removal depth of the page wheel is basically the same. The average relative error between the material removal depth predicted by the theoretical model and the test results is 6.25%, which shows that the model can accurately predict the grinding removal depth.