Wear characteristics of diamond grinding wheels with biomimetic structures in grinding silicon carbide ceramics

The grinding wheel surface structuring technology can enhance the grinding processing efficiency of ceramic materials, but the grinding wheel wear problem limits the further improvement of processing accuracy. In this paper, a bionic structured bronze bond diamond grinding wheel is designed by drawing on the bird feather structure. The wear characteristics of the feather-like structured grinding wheel (FLSGW) and two conventional structured grinding wheels are compared. The effects of the wear evolution of the structured grinding wheel on the wear morphology, grinding ratio, grinding force, and surface quality of the silicon carbide ceramic workpiece are analyzed. It is found that the difference in the surface structure of the grinding wheels significantly affects their wear behavior: FLSGW can guide the flow of the grinding fluid and remove the grinding chips more efficiently, which substantially reduces the fracture and pull-out of abrasive grits, and consequently reduces the grinding force and enhances the abrasion resistance of the grinding wheels. Moreover, the surface roughness of workpieces machined with FLSGW is reduced by up to 32.78 % compared to traditional grinding wheel (TGW).