Grinder, method for operating it, and grinding disk

Abstract

A grinder having a motor, wherein the grinder can be connected to a grinding disk. The grinder is configured to enable a wobbling movement, in addition to a grinding movement in a flat plane, of the grinding disk when the grinding disk is connected to the grinder. As a result, the grinder is able to perform a grinding movement, which constitutes a superimposition of a grinding movement in a flat plane and a wobbling movement of the grinding disk. This makes it possible to operate the grinder in two operating modes, the wobbling movement being able to be stopped by an arresting device. method for operating a grinder and a grinding disk for the grinder, the grinding disk having an unbalance for assisting the wobbling movement is also provided.

1 - 15 . (canceled) 
     
     
         16 . A grinder comprising:
 a motor,   the grinder connectable to a grinding disk and configured to enable a wobbling movement, in addition to a grinding movement in a flat plane, of the grinding disk when the grinding disk is connected to the grinder.   
     
     
         17 . The grinder as recited in  claim 16  wherein the grinding movement in the flat plane and the wobbling movement of the grinding disk are superimposed. 
     
     
         18 . The grinder as recited in  claim 16  wherein when the wobbling movement is being carried out, only a part of the grinding disk is in contact with an underlying surface to be machined. 
     
     
         19 . The grinder as recited in  claim 16  further comprising a grinding shaft connected to the grinding disk, wherein the grinding shaft has a rigid portion and a wobbling portion. 
     
     
         20 . The grinder as recited in  claim 19  wherein the wobbling movement of the grinding disk is enabled by a wobbling movement of the grinding shaft. 
     
     
         21 . The grinder as recited in  claim 19  wherein the grinding shaft has a fixed point dividing the grinding shaft into the rigid portion and the wobbling portion. 
     
     
         22 . The grinder as recited in  claim 19  further comprising a flexible mounting for the grinding shaft in a region of the wobbling portion of the grinding shaft, in order to enable the wobbling movement. 
     
     
         23 . The grinder as recited in  claim 22  wherein the flexible mounting of the grinding shaft has an elastic element, in order to enable the wobbling movement. 
     
     
         24 . The grinder as recited in  claim 22  further comprising an arrester for securing the flexible mounting. 
     
     
         25 . The grinder as recited in  claim 16  further comprising a drive coupling for damping vibrations. 
     
     
         26 . A grinding disk for the grinder as recited in  claim 16 , wherein the grinding disk has an unbalance for assisting the wobbling movement. 
     
     
         27 . The grinding disk as recited in  claim 26  wherein the unbalance is provided by virtue of the following:
 a) an asymmetrical arrangement of grinding elements on the grinding disk; 
 b) grinding elements of different sizes; or 
 c) an asymmetric configuration of a basic body of the grinding disk. 
 
     
     
         28 . A method for operating the grinder as recited in  claim 16 , the method comprising the following steps:
 a) providing the grinder; and   b) operating the grinder, the grinder performing a grinding movement constituting a superimposition of a grinding movement in a flat plane and a wobbling movement of the grinding disk.   
     
     
         29 . The method as recited in  claim 28  wherein the wobbling movement can be switched off by actuating an arrester. 
     
     
         30 . The method as recited in  claim 28  wherein the grinder is operable in two work modes, wherein,
 in a first work mode, the grinder performs a grinding movement in the flat plane or a further flat plane, and wherein 
 in a second work mode, the grinder performs a grinding movement constituting the superimposition of the grinding movement in the flat plane and the wobbling movement of the grinding disk.