Optimization of efficiency and uniformity of bond removal during laser sharpening

In order to improve the efficiency and uniformity of bond removal, a finite element model of multi-pulse laser ablation was established, and process experiments of laser ablation and sharpening were carried out in this paper. The results show that the efficiency of bond removal increased linearly with the increase of laser power density. Increasing the spot overlap ratio could improve the efficiency of bond removal, and changing the line overlap ratio had almost no effect on the efficiency of bond removal. Increasing the spot overlap ratio and the line overlap ratio was beneficial to improve the uniformity of the bond removal and ensure the uniformity of the grain protrusion height. The established finite element model could provide theoretical basis and data reference for determining the process parameter window and predicting the surface topography when performing the laser sharpening of grinding wheel (not limited to the bronze-bonded diamond grinding wheel), thereby saving cost and improving efficiency.