Patent ID: 7632171

Claim:
A grinding machine with a grinding means for machining a workpiece surface which can be moved in a direction of conveyance relative to the grinding means and is arranged in a machining plane, wherein the grinding means has a large number of grinding heads with grinding elements ( 8 ) rotating about a respective shaft, and the grinding heads can be moved by means of an endlessly revolving transporting means ( 1 ) in a grinding region ( 3 ) by deflection about deflection rollers via rectilinear portions in a grinding region at an angle to the direction of conveyance, wherein a drive means ( 13 ), with which the grinding elements ( 8 ) are driven in rotation by a common motor provided for rotationally driving these grinding elements ( 8 ), is provided for at least one group of a plurality of grinding elements ( 8 ), and in that the drive means ( 13 ) consists of a flexible frictional engagement or positive engagement assembly which is guided parallel to the transporting means ( 1 ) about deflection rollers ( 22 ) and is formed with the shafts ( 17 ) of the grinding elements ( 8 ) for rotationally driving irrespective of the speed of transportation of the grinding elements ( 8 ).