Abstract: The grinding machine (1), in particular for grinding and/or sharpening of knives, comprises a grinding disc (2), mounted rotatably around a turning axis (D1) and turnable in direction of rotation (D), with a cylindrically-shaped grinding surface (2a) comprising abrasive means, as well as comprising a guiding part (3), which is arranged immediately next to the grinding surface (2a) of the grinding disc (2), wherein the guiding part (3) has a guiding surface (3a) which extends in such a way that the guiding surface (3a), together with the grinding surface (2a), forms a gap (S), which progressively tapers in the direction opposite to the direction of rotation (D) and which runs parallel to the direction of the turning axis (D1), and that an overlay part (4) with an overlay surface (4a) running towards the gap (S) is arranged immediately next to the grinding surface (2a) of the grinding disc (2).