Rolling tool and roller for rolling, particularly deep rolling, a work piece

Abstract

Previously known mechanical deep rolling tools share the feature that their rollers not only roll over the work piece but also over a counter roller on the tool side. This allows the deep rolling roller to swing to the side; but the roller material becomes fatigued relatively quickly. To achieve longer life, a rolling tool is suggested in which a working periphery is located in a work piece contact area spatially separated from a bearing contact area of the roller. A rolling tool with a hydraulically supported forming roller and a roller suitable therefor are also suggested.

1 . A rolling tool, comprising a roller for rolling, particularly for deep rolling, a work piece, said roller, while rolling, running along the work piece with a working periphery, wherein the working periphery is located in a work piece contact area of the roller that is separated from a bearing contact area.  
   
   
       2 . The rolling tool of  claim 1 , wherein the bearing contact area is arranged on both sides of the work piece contact area.  
   
   
       3 . The rolling tool of  claim 1 , wherein the roller has a circular arc shaped contour in the bearing contact area.  
   
   
       4 . The rolling tool of  claim 1 , wherein the bearing contact area has a bearing contour of a continuous arc on both sides of the work piece contact area, wherein a centre point of the continuous arc is in a plane of the work piece contact area.  
   
   
       5 . The rolling tool of  claim 4 , wherein tangents with the work piece contact area and the bearing contact area are perpendicular to a line from there to the centre point of the circle.  
   
   
       6 . The rolling tool of  claim 1 , wherein the roller has a barrel shape in the bearing contact area.  
   
   
       7 . The rolling tool of  claim 1 , further comprising a mechanical bearing on a tool side to accommodate the roller.  
   
   
       8 . The rolling tool of  claim 1 , wherein the roller has a spherical shape in the bearing contact area.  
   
   
       9 . The rolling tool of  claim 1 , further comprising a hydraulic bearing on the tool side to accommodate the roller.  
   
   
       10 . The rolling tool of  claim 9 , wherein the hydraulic bearing is a hydrostatic bearing.  
   
   
       11 . The rolling tool of  claim 1 , further comprising a pivoting bearing area on the roller to maintain a constant bearing surface when the roller is shifted.  
   
   
       12 . The rolling tool of  claim 1 , further comprising two hydraulic supply lines to a bearing of the roller on a tool side.  
   
   
       13 . A rolling tool, comprising a hydraulically supported roller for rolling, particularly deep rolling a work piece, wherein the roller is supported spherically and having an aspherical configuration.  
   
   
       14 . The rolling tool of  claim 13 , wherein the roller is partly spherical.  
   
   
       15 . The rolling tool of  claim 1 , further comprising two hydraulic supply lines to a bearing of the roller on a tool side.  
   
   
       16 . A rolling tool, comprising a roller for rolling, particularly deep rolling a work piece, wherein the roller is a forming roller with a hydraulic bearing.  
   
   
       17 . The rolling tool of  claim 16 , further comprising two hydraulic supply lines to a bearing of the roller on a tool side.  
   
   
       18 . A roller for rolling, particularly for deep rolling a work piece, said roller having an essentially disc-shaped work piece contact element arranged symmetrically about a rolling axis, and bearing elements arranged lengthwise relative to the axis of the roller and rotationally symmetrically about the same axis.