Grinding tool and method of manufacturing a grinding tool

Abstract

A grinding tool drivable in rotation about an axis of rotation, including: an abrasive band which is wound spirally with a plurality of superimposed layers about the axis of rotation and has a grinding layer on a band side facing away from the axis of rotation, characterized in that the wound abrasive band is, viewed in a longitudinal section along the axis of rotation, convexly curved with respect to the axis of rotation and the layers of the abrasive band reach radially into one another. Furthermore, the disclosure relates to a method for manufacturing a grinding tool.

1 . A grinding tool drivable in rotation about an axis of rotation, comprising:
 an abrasive band which is wound spirally with a plurality of superimposed layers about the axis of rotation and has a grinding layer on a band side facing away from the axis of rotation, characterized in   that the wound-up abrasive band is, viewed in a longitudinal section along the axis of rotation, convexly curved with respect to the axis of rotation and the layers of the abrasive band reach radially into one another.   
     
     
         2 . The grinding tool according to  claim 1 , wherein, with respect to the axis of rotation, radially inner layer of the abrasive band is axially covered partially by an adjacent radially outer layer of the abrasive band. 
     
     
         3 . The grinding tool according to  claim 1 , wherein the profile geometry of the wound-up abrasive band has a U-shape and/or a V-shape at least partially along the band length of the abrasive band. 
     
     
         4 . The grinding tool according to  claim 1 , wherein the grinding tool has a first main tool side and a second main tool side facing away from the first main tool side, the abrasive band being arranged axially between the first main tool side and the second main tool side with respect to the axis of rotation. 
     
     
         5 . The grinding tool according to  claim 4 , wherein the grinding tool is covered on its first main tool side and/or the second main tool side at least partially by a respective stabilizing layer, the abrasive band being fastened to the at least one stabilizing layer. 
     
     
         6 . The grinding tool according to  claim 5 , wherein the at least one stabilizing layer comprises a binder, wherein in an edge region of the abrasive band facing the respective stabilizing layer the binder extends into intermediate spaces formed between the layers of the abrasive band. 
     
     
         7 . The grinding tool according to  claim 1 , wherein the layers of the abrasive band lie one above the other in an unconnected manner at least in a central grinding region, the central grinding region extending over at least 60 percent of the axial extent of the abrasive band with respect to the axis of rotation. 
     
     
         8 . The grinding tool according to  claim 1 , wherein the grinding tool is a grinding disk and comprises a central supporting body, the abrasive band being arranged around the supporting body. 
     
     
         9 . The grinding tool according to  claim 8 , wherein the abrasive band is fixed to the supporting body by means of the at least one stabilizing layer. 
     
     
         10 . The grinding tool according to  claim 8 , wherein the supporting body is plate-shaped and has a first main body side and a second main body side facing away from the first main body side, as well as an outer circumferential edge, the abrasive band being arranged around the outer circumferential edge. 
     
     
         11 . The grinding tool according to  claim 10 , wherein a first end of the abrasive band terminates at the outer periphery of the grinding tool and a second end of the abrasive band terminates at the outer circumferential edge of the supporting body. 
     
     
         12 . The grinding tool according to  claim 1 , wherein the grinding tool has a multilayer winding with the abrasive band and at least one further abrasive band, the abrasive band and the at least one further abrasive band being wound, at least partially, in multiple layers one on top of the other and spirally with multiple layers one on top of the other about the axis of rotation. 
     
     
         13 . A method of manufacturing the grinding tool according to  claim 1 , comprising the steps of:
 Providing a primary material in the form of a band-shaped abrasive,   Spiral winding of the primary material around the axis of rotation;   Arranging the wound primary material in a mold having a cylindrical wall whose inner diameter at least approximately corresponds to the outer diameter of the grinding tool to be produced, and   Pressing the wound primary material in a direction along the axis of rotation until the primary material buckles.