Grinding machine

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 (D 1 ) and turnable in direction of rotation (D), with a cylindrically-shaped grinding surface ( 2 a ) comprising abrasive means, as well as comprising a guiding part ( 3 ), which is arranged immediately next to the grinding surface ( 2 a ) of the grinding disc ( 2 ), wherein the guiding part ( 3 ) has a guiding surface ( 3 a ) which extends in such a way that the guiding surface ( 3 a ), together with the grinding surface ( 2 a ), 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 (D 1 ), and that an overlay part ( 4 ) with an overlay surface ( 4 a ) running towards the gap (S) is arranged immediately next to the grinding surface ( 2 a ) of the grinding disc ( 2 ).

1 . A grinding machine ( 1 ), comprising a grinding wheel ( 2 ) with a disc-shaped basic body ( 2   a ), wherein the disc-shaped basic body ( 2   a ) has a centre of turning (D), as well as at least one side surface ( 2   g ) extending substantially perpendicularly to the centre of turning (D), and wherein a grinding disc ( 3 ), having a grinding layer ( 3   a ) is removably fixable to the disc-shaped basic body ( 2   a ) in such a way that the grinding disc ( 3 ) is arranged concentrically with respect to the centre of turning (D) and extensionally along the side surface ( 2   g ) of the disc-shaped basic body ( 2   a ), as well as comprising a support device ( 5 ,  6 ) which forms a guide ( 5   e ), wherein the guide ( 5   e ) is arranged to extend in such a way that at the grinding disc ( 3 ), when this is attached to the basic body ( 2   a ), an acute angle (γ) is formed between the grinding layer ( 3   a ) and the guide ( 5   e ), to form a grinding gap (S). 
     
     
         2 . Grinding machine according to  claim 1 , characterised in that the basic body ( 2   a ) comprises an elastic carrier ( 2   d ) extending circumferentially and standing out from the side surface ( 2   g ), wherein the elastic carrier ( 2   d ) is of a matching form such that an attached grinding disc ( 3 ) lies against the elastic carrier ( 2   d ). 
     
     
         3 . Grinding machine according to  claim 2 , characterised in that the elastic carrier ( 2   d ) is arranged towards the outer periphery of the disc-shaped basic body ( 2   a ). 
     
     
         4 . Grinding machine according to  claim 2 , characterised in that the elastic carrier ( 2   d ) is an O-ring. 
     
     
         5 . Grinding machine according to  claim 1 , characterised in that the basic body ( 2   a ) has an overly ( 2   i ) in the centre, which stands out from the side surface ( 2   g ) in the direction of extension of the centre of turning (D). 
     
     
         6 . Grinding machine according to  claim 1 , characterised in that the grinding wheel ( 2 ) is formed on both sides for attaching a grinding disc ( 3 ). 
     
     
         7 . Grinding machine according to  claim 1 , characterised in that the grinding gap (S) ends at its bottom in a gap line (S 1 ), and that the grinding gap (S) is arranged in a range of between 0 cm to 2 cm, preferably between 2 mm and 12 mm, above a horizontal line ( 3   f ), wherein the horizontal line ( 3   f ) runs through the centre of turning (D). 
     
     
         8 . Grinding machine according to  claim 1 , characterised in that the support device ( 5 ,  6 ) comprises a plurality of rotatably mounted support bodies ( 5   d ). 
     
     
         9 . Grinding machine according to  claim 8 , characterised in that the support bodies ( 5   d ) are arranged next to each other in the direction of extension of the grinding gap (S). 
     
     
         10 . Grinding machine according to  claim 8 , characterised in that the support means ( 5 ,  6 ) comprises a plurality of basic bodies ( 5   a ), which are arranged next to each other in the direction of extension of the gap (S), that the basic bodies ( 5   a ) are releasably connected with the support device ( 5 ,  6 ), and that at least one hollow, cylindrically-formed support body ( 5   d ) is rotatably mounted on each basic body ( 5   a ). 
     
     
         11 . Grinding machine according to  claim 8 , characterised in that the support device ( 5 ,  6 ) is pivotally mounted about a turning axis ( 11   a ,  11   b ) which is substantially parallel to the direction of extension of the gap (S). 
     
     
         12 . Grinding machine according to  claim 11 , characterised in that a support device ( 5 ,  6 ) is arranged on each side of the grinding wheel ( 2 ), and that the two support devices ( 5 , 6 ) are pivotally mounted in a mirrored fashion. 
     
     
         13 . Grinding machine according to  claim 11 , characterised in that an adjustment device ( 11 ) is formed such that it allows a turning and locking of at least one turning axis ( 11   a ,  11   b ). 
     
     
         14 . Grinding machine according to  claim 13 , characterised in that each of the turning axes ( 11   a ,  11   b ) are connected symmetrically with a shared linear slider ( 11   h ) via a lever ( 11   c ,  11   d ), such that a linear moving of the slider ( 11   h ) results in a equal but opposite pivoting of the turning axes ( 11   a ,  11   b ). 
     
     
         15 . Grinding disc for a grinding machine according to  claim 1 .