Surface grinding machine and method for adjusting a surface grinding machine

Abstract

The present disclosure relates to a surface grinder having at least one grinding tool, a workpiece holder for holding at least one workpiece, a drive unit for driving the workpiece holder in a rotational direction and a clutch device that provides a rotationally fixed connection between the drive unit and the workpiece holder that can be released at a specifiable limit torque.

1 . A surface grinder comprising at least one grinding tool, a workpiece holder for holding at least one workpiece, and a drive unit for driving the workpiece holder in a rotational direction, characterized by a clutch device that provides a rotationally fixed connection between the drive unit and the workpiece holder that can be released at a specifiable limit torque. 
     
     
         2 . The surface grinder according to  claim 1 , characterized by a control unit that sets the limit torque of the clutch device as a function of an actually occurring maximum drive torque. 
     
     
         3 . The surface grinder according to  claim 1 , characterized in that the clutch device is constructed in the form of an electromagnetic clutch. 
     
     
         4 . The surface grinder according to  claim 1 , characterized in that the rotationally fixed connection is a frictionally engaged connection. 
     
     
         5 . The surface grinder according to  claim 1 , characterized in that the surface grinder is constructed as a double surface grinder. 
     
     
         6 . A method for setting up a surface grinder, wherein the surface grinder comprises at least one grinding tool, a workpiece holder for holding at least one workpiece and a drive unit for driving the workpiece holder in a rotational direction, characterized in that an actually occurring maximum torque during the grinding of a sample workpiece is determined, and in that a rotationally fixed connection is produced between the drive unit and the workpiece holder that can be released at a limit torque determined as a function of the maximum drive torque. 
     
     
         7 . The method according to  claim 6 , characterized in that the actually occurring maximum drive torque is determined by detecting the energy requirement of the drive unit. 
     
     
         8 . The method according to  claim 6 , characterized in that the actually occurring maximum drive torque is measured with a torque measurement device. 
     
     
         9 . The method according to  claim 6 , characterized in that the limit torque is equal to the maximum drive torque multiplied by a factor greater than 1. 
     
     
         10 . The method according to  claim 6 , characterized in that the limit torque is equal to the maximum drive torque multiplied by a factor of less than approximately 1.5. 
     
     
         11 . The method according to  claim 6 , characterized in that the at least one sample workpiece has the same geometry as a non-machined workpiece to be surface-ground by means of the surface grinder. 
     
     
         12 . The method according to  claim 6 , characterized in that the maximum drive torque is determined when an engagement surface area between the at least one grinding tool and the at least one sample workpiece is at a maximum.