ABSTRACT
In grinding, when the cubic boron nitride (CBN) grains wear, their sharpness can reduce, and their material removal ability deteriorates. As a consequence, the ground surface quality and integrity can be affected by the CBN grain wear. Therefore, it is important to deeply understand the influence of grain wear on the material removal behaviour in grinding by the brazed CBN grinding wheels. In this chapter, we examine the effect of grain wear behaviour on the material removal mechanism by controlling the undeformed chip thickness (UCT), which is related to tool life and material removal efficiency. The grain wear behaviour in single-grain grinding was classified and investigated in terms of grain morphologies, grinding force, and pile-up ratio. Finally, the influence of grain wear behaviour on the material removal process has been discussed. This study provides theoretical guidance to control the brazed CBN wheel wear to improve the material removal rate.
