Research on variable depth cutting simulation and grinding experiment of 18CrNiMo7-6 carburized steel

Aiming at the problem of poor surface quality in the grinding process of quenched carburized steel, a single abrasive particle finite element simulation and diamond grinding wheel grinding experiments were carried out. A three-dimensional model of diamond abrasive particles was constructed based on Python algorithm. The scratch morphology during variable depth cutting of carburized steel was analyzed using finite element software ABAQUS, and the ideal grinding depth for carburized steel machining was explored. The grinding experiment for carburized steel workpiece was designed, and the influence of spindle speed, grinding depth, and feed speed on surface roughness was studied based on finite element simulation results. The simulation results indicate that when the cutting depth of abrasive particles is between 3 μm and 12 μm, the cutting surface of carburized steel has good machining quality. The surface roughness decreases with the increase of spindle speed, and increases with the increase of grinding depth and feed speed. When the grinding depth is 10 μm and 15 μm respectively, the surface roughness of carburized steel is 0.305 μm and 0.597 μm, which verifies the accuracy of the simulation results in the ideal cutting area.