Roughing grinding tool

Abstract

A roughing grinding tool has a supporting body and at least one abrasive circle. The supporting body includes an abrasive grain for roughing grinding. The supporting body serves to support the at least one abrasive circle and itself for roughing grinding. The roughing grinding tool is easy to produce and robust and has a high removal capacity in conjunction with a long service life.

1 - 18 . (canceled) 
     
     
         19 . A roughing grinding tool having
 a supporting body,   at least one abrasive circle, and   a through-opening for fastening a tool drive, wherein the supporting body comprises an abrasive grain for roughing grinding.   
     
     
         20 . The roughing grinding tool as claimed in  claim 19 , wherein the supporting body forms an abrasive region that comprises the abrasive grain bonded by means of a bonding agent. 
     
     
         21 . The roughing grinding tool as claimed in  claim 19 , wherein the supporting body comprises at least one supporting-body reinforcement. 
     
     
         22 . The roughing grinding tool as claimed in  claim 21 , wherein said supporting-body reinforcement is arranged next to at least one of the group comprising a top side and an underside of the supporting body. 
     
     
         23 . The roughing grinding tool as claimed in  claim 21 , wherein at least one supporting-body reinforcement is embedded in the abrasive region. 
     
     
         24 . The roughing grinding tool as claimed in  claim 19 , wherein the supporting body has a supporting-body outside diameter D T  and the at least one abrasive circle has an abrasive circle outside diameter D S , wherein:
   0.1· D   S   ≤D   T ≤1.2· D   S .
   
     
     
         25 . The roughing grinding tool as claimed in  claim 19 , wherein the supporting body is formed in a disk-shaped manner. 
     
     
         26 . The roughing grinding tool as claimed in  claim 25 , wherein the supporting body has an offset. 
     
     
         27 . The roughing grinding tool as claimed in  claim 19 , wherein the at least one abrasive circle is arranged between a first supporting body and a second supporting body. 
     
     
         28 . The roughing grinding tool as claimed in  claim 19 , wherein, for a number N of the at least one abrasive circle: 1≤N≤9. 
     
     
         29 . The roughing grinding tool as claimed in  claim 19 , wherein a plurality of abrasive circles are arranged one on top of another, wherein a first abrasive circle is fastened to the supporting body and each further abrasive circle is fastened to an underlying abrasive circle. 
     
     
         30 . The roughing grinding tool as claimed in  claim 19 , wherein a first abrasive circle is fastened to the supporting body and a second abrasive circle is fastened to the first abrasive circle. 
     
     
         31 . The roughing grinding tool as claimed in  claim 19 , wherein the at least one abrasive circle forms a joining region and a working region surrounding the joining region, and the at least one abrasive circle is fastened in the joining region and is unfastened in the working region. 
     
     
         32 . The roughing grinding tool as claimed in  claim 19 , wherein the at least one abrasive circle has an oriented abrasive grain. 
     
     
         33 . The roughing grinding tool as claimed in  claim 19 , wherein an abrasive circle reinforcement is fastened to at least part of the surface of the at least one abrasive circle. 
     
     
         34 . The roughing grinding tool as claimed in  claim 19 , wherein the at least one abrasive circle comprises a backing layer with abrasive grain arranged thereon. 
     
     
         35 . The roughing grinding tool as claimed in  claim 34 , wherein the backing layer is configured as at least one of the group comprising paper, vulcanized fiber, nonwoven and backing textile. 
     
     
         36 . The roughing grinding tool as claimed in  claim 34 , wherein the backing textile comprises at least one of the group comprising polyester fibers, cotton fibers and glass fibers. 
     
     
         37 . The roughing grinding tool as claimed in  claim 36 , wherein the backing textile is a polyester/cotton blend. 
     
     
         38 . The roughing grinding tool as claimed in  claim 19 , wherein the at least one abrasive circle is stiffened with a filling resin. 
     
     
         39 . The roughing grinding tool as claimed in  claim 21 , wherein at least one of the group comprising the at least one supporting-body reinforcement and the abrasive circle reinforcement comprises at least one of the group comprising glass fibers and jute fibers. 
     
     
         40 . The roughing grinding tool as claimed in  claim 19 ,
 wherein the at least one abrasive circle forms in each case at least one abrasive layer.   
     
     
         41 . The roughing grinding tool as claimed in  claim 40 , wherein the at least one abrasive layer is arranged on at least one of the group comprising a top side and an underside of the at least one abrasive circle.