Flange sleeve, method for the production thereof and bending tool for producing flanges on a sleeve

Abstract

A flanged bush for plain bearings having at least one flange formed thereon having axially facing inner and outer surfaces and including at least one metallic layer. The flange includes material-displacing recesses impressed axially into said flange in said metallic layer at least two points distributed over said flange in a circumferential direction.

1 . A flanged bush for plain bearings having at least one flange formed thereon having axially facing inner and outer surfaces and including at least one metallic layer, wherein 
 the flange includes material-displacing recesses impressed axially into said flange in said metallic layer at least two points distributed over said flange in a circumferential direction.    
   
   
       2 . A flanged bush according to  claim 1 , wherein said recesses are located on said inner surface of said flange.  
   
   
       3 . A flanged bush according to  claim 1 , wherein said recesses are located on said outer surface of said flange.  
   
   
       4 . A flange bush according to  claim 1 , wherein said recesses are formed in said inner surface and said outer surface of said flange.  
   
   
       5 . A flanged bush according to  claim 1 , wherein said recesses extend to an outer peripheral edge of said flange.  
   
   
       6 . A flanged bush according to  claim 1 , wherein said recesses widen circumferentially in a direction radially outwardly of said bush.  
   
   
       7 . A flanged bush according to  claim 1 , wherein said recesses have a generally semicircular shape.  
   
   
       8 . A flanged bush according to  claim 1 , wherein said recesses have a wedge shape.  
   
   
       9 . A flanged bush according to  claim 1 , wherein said recesses have a width that increases axially in a direction radially outwardly of said bush.  
   
   
       10 . A flanged bush according to  claim 1 , wherein said recesses extend radially over the entire width of the flange.  
   
   
       11 . A bending die for producing one or two radially extending flanges having predetermined thicknesses and axially facing inner and outer surfaces on a bush, having a bush receptacle, wherein at least one end face surrounding the bush receptacle presents a bearing surface for the flange, and wherein said end face includes comprises axially extending elevations at least two points distributed over said end face in a circumferential direction of said end face having a height which is less than half said thickness of said flange or flanges for impressing recesses axially into at least one of the inner or outer surfaces.  
   
   
       12 . A bending die according to  claim 11 , wherein said elevations are arranged equidistantly in said circumferential direction.  
   
   
       13 . A bending die according to  claim 11 , wherein said elevations have a circular contour.  
   
   
       14 . A bending die according to  claim 11 , wherein said elevations have an oval contour.  
   
   
       15 . A bending die according to  claim 11 , wherein said elevations have a wedge shaped contour.  
   
   
       16 . A bending die according to  claim 11 , wherein said elevations comprise radially extending webs.  
   
   
       17 . A bending die according to  claim 11 , wherein said elevations are formed on said end face.  
   
   
       18 . A bending die according to  claim 11 , including punches projecting relative to the end face inserted into the end face.  
   
   
       19 . A bending die according to  claim 18 , wherein said punches comprise pins.  
   
   
       20 . A bending device comprising a bending die and a pressure plate adapted to act on a bush edge to be bent around said die to form a flange having a thickness and inner and outer axially facing surfaces wherein one of said bending die and pressure plate comprises elevations provided on a surface facing at least one of the inner or outer surfaces and where said elevations have a height that is less than half the thickness of said flange.