Grinding body having reduced weight

Abstract

A grinding body including a substantially cylindrical outer member for receiving an abrasive material, an inner member for attaching the grinding body to a drive unit, and a connecting structure for mechanical force transmission between the outer member and the inner member. The outer member, the inner member, and/or the connecting structure may be made at least in part of a fiber-plastic composite.

1 .- 23 . (canceled) 
     
     
         24 . A grinding body comprising:
 a cylindrical outer member for receiving an abrasive material;   an inner member configured to be attached to a drive unit; and   a connecting structure for mechanical force transmission between the cylindrical outer member and the inner member, wherein at least one of the outer cylindrical member, the inner member, or the connecting structure comprises a fiber-plastic composite.   
     
     
         25 . The grinding body of  claim 24  wherein the inner member is cylindrical. 
     
     
         26 . The grinding body of  claim 24  wherein fibers of the fiber-plastic composite are formed as at least one of a laid web, a woven fabric, braiding, a surface structure, or a winding structure. 
     
     
         27 . The grinding body of  claim 24  wherein fibers of the fiber-plastic composite of at least one of the cylindrical outer member or the inner member are oriented at least for a portion in a circumferential direction of the at least one of the cylindrical outer member or the inner member. 
     
     
         28 . The grinding body of  claim 24  wherein fibers of the fiber-plastic composite are oriented at least for a portion along a surface of the at least one of the outer cylindrical member, the inner member, or the connecting structure. 
     
     
         29 . The grinding body of  claim 24  wherein the fiber-plastic composite is comprised of one or more layers. 
     
     
         30 . The grinding body of  claim 24  wherein the connecting structure is configured as a flat connecting element. 
     
     
         31 . The grinding body of  claim 24  wherein the connecting structure has a quasi-isotropic layer structure. 
     
     
         32 . The grinding body of  claim 24  wherein the connecting structure comprises a plurality of elements disposed in a spokelike arrangement. 
     
     
         33 . The grinding body of  claim 32  wherein the plurality of elements of the spokelike arrangement each comprise a core of foam material. 
     
     
         34 . The grinding body of  claim 24  wherein at least one of the cylindrical outer member, the inner member, or the connecting structure is comprised of a preform. 
     
     
         35 . The grinding body of  claim 24  wherein the connecting structure is attached by at least one of integral bonding or a form fit to the cylindrical outer member or the inner member. 
     
     
         36 . The grinding body of  claim 24  wherein fibers of the fiber-plastic composite comprise at least one of carbon fibers, glass fibers, basalt fibers, or aramide fibers. 
     
     
         37 . The grinding body of  claim 24  wherein matrix material of the fiber-plastic composite comprises a thermoset or a thermoplastic. 
     
     
         38 . The grinding body of  claim 24  comprising a metal bushing disposed at least partially inside the inner member. 
     
     
         39 . The grinding body of  claim 24  wherein the cylindrical outer member has a larger axial extension than the inner member. 
     
     
         40 . The grinding body of  claim 24  wherein the abrasive material is applied to the cylindrical outer member. 
     
     
         41 . A method for making a grinding body comprising:
 forming a cylindrical outer member to receive an abrasive material;   forming an inner member for attaching the grinding body to a drive unit; and   forming a connecting structure for the mechanical force transmission between the cylindrical outer member and the inner member,   wherein at least one of the cylindrical outer member, the inner member, or the connecting structure is comprised at least in part of a fiber-plastic composite.   
     
     
         42 . The method of  claim 41  comprising forming at least one of the cylindrical outer member, the inner member, or the connecting structure by placing fibers on a mold and then infiltrating the fibers with plastic. 
     
     
         43 . The method of  claim 42  comprising stripping the grinding body by removing the at least one of the cylindrical outer member, the inner member, or the connecting structure from the mold after the infiltration with plastic. 
     
     
         44 . The method of  claim 42  wherein the mold comprises separate mold sections for the cylindrical outer member, the inner member, and the connecting structure. 
     
     
         45 . The method of  claim 41  comprising positioning and securing a metal bushing at least partially inside the inner member.