Grinding machine having a safety device

Abstract

A grinding machine includes a work table for supporting a work piece to be ground, a grinding member movable relative to the work piece, and a load cell attached to the grinding member for detecting an engagement of the grinding member onto the work piece or for detecting a reactive force of the work piece against the grinding member. The load cell may send out a signal in order to stop or to move the grinding member relative to the work piece in order to suitably working or grinding the work piece when the grinding member is engaged onto the work piece with an overload.

I claim:  
     
         1 . A grinding machine comprising: 
 a work table for supporting a work piece to be ground,    a grinding member movable relative and toward and away from said work table and the work piece, and    a load cell attached to said grinding member for detecting an engagement of said grinding member onto the work piece.    
     
     
         2 . The grinding machine according to  claim 1  further comprising a housing for supporting said grinding member, said load cell being attached to said housing.  
     
     
         3 . The grinding machine according to  claim 1  further comprising a processing unit coupled to said load cell for receiving a signal from said load cell.  
     
     
         4 . The grinding machine according to  claim 1  further comprising a bolt coupled to said load cell for moving said grinding member toward and away from said work table.  
     
     
         5 . A grinding machine comprising: 
 a work table for supporting a work piece to be ground,    a grinding member movable relative and toward and away from said work table and the work piece,    a load cell attached to said grinding member for detecting an engagement of said grinding member onto the work piece, and    means for actuating said grinding member to work against the work piece.    
     
     
         6 . The grinding machine according to  claim 5  further comprising a housing for supporting said grinding member, said load cell being attached to said housing.  
     
     
         7 . The grinding machine according to  claim 5 , wherein said actuating means includes a processing unit coupled to said load cell for receiving a signal from said load cell.  
     
     
         8 . The grinding machine according to  claim 5 , wherein said actuating means includes a bolt coupled to said load cell for moving said grinding member toward and away from said work table.