In cutting tool manufacturing the tool grinding process is responsible for the properties of the cutting tool surface, the subsurface and the cutting edge geometry. The cutting performance and wear behavior of uncoated ceramic inserts is carried out in the hard turning. This paper shows the influence of the tool grinding process on the surface and subsurface properties and the cutting edge quality of ceramic inserts. In-process sharpening techniques which minimize the influence of the grinding wheel wear on the grinding process and improve the grinding process behavior are presented.