Flanging machine and method for spin-flanging workpieces

Abstract

A crimping device ( 1 ) comprising a crimping bed ( 12 ) provided for receiving a workpiece ( 10 ), a multiaxial manipulator, in particular an industrial robot ( 2 ), which has a crimping tool ( 5 ) with at least one crimping roller ( 6 ) on its hand, is intended to avoid fold formation on the flange ( 11 ), particularly during the pre-crimping. To this end, at least parts of the crimping roller ( 6 ) have the form of a cone or a truncated cone having an axis of symmetry ( 27 ), an apex ( 26 ), and an opening angle α, wherein for the opening angle α of the cone it holds that 180°>α≧140°.

1 . A flanging machine comprising:
 a flanging bed adapted to receive a workpiece; and   a multi-axle manipulator adapted to carry a flanging tool at a hand with at least one flanging role,   wherein at least one part of the flanging role has a form of a cone with an apex, an at least substantially symmetrical axle running through the apex, and an apex angle α of a specified surface area to be pressed on a flared flange,   wherein the apex angle α of the cone is in a range of about 180°>α≧140°.   
     
     
         2 . The flanging machined according to  claim 1 , wherein that the range is about 180°>α≧160°. 
     
     
         3 . The flanging machined according to  claim 1 , wherein a base area of the flanging role has a diameter d with d≧about 60 mm. 
     
     
         4 . The flanging machined according to  claim 1 , wherein the flanging role is a pre-flanging role. 
     
     
         5 . The flanging machined according to  claim 1 , which comprises an additional flanging role adapted for final-flanging processes, wherein the flanging role has a cylindrical form after the final-flanging processes. 
     
     
         6 . The flanging machine according to of the  claim 1 , wherein the flanging role is adapted for use in pre-flanging and final-flanging processes. 
     
     
         7 . A method to spin-flanging workpieces, comprising the steps of:
 provisioning of the workpiece to be flanged with a flange on a flanging bed;   pre-flanging of the flange with a pre-flanging role that has a conical form and is guided by a multi-axle manipulator, wherein for the apex angle α of a lateral surface of the cone to be pressed on the flared flange it is in the range of about 180°>α≧140°; and   final-flanging of the flange.   
     
     
         8 . The method according to  claim 7 , wherein the final-flanging is carried out with a final flanging role having a cylindrical form. 
     
     
         9 . The method according to  claim 7 , wherein a local strain caused by the flanging role is at its lowest at the at an edge of the flange and has a gradient from the edge of the flange to a beginning of the flange. 
     
     
         10 . The method according to  claim 7 , wherein the symmetrical axle of the flanging role is oriented in a substantially vertical position relative to a surface of the flanging bed. 
     
     
         11 . The method according to  claim 10 , wherein the symmetrical axle of the flanging role is turned anti-clockwise by a traveling angle β in relation to a vertical of a translational directions. 
     
     
         12 . The method according to  claim 7 , wherein the symmetrical axle of the flanging role is substantially parallel to a surface of the flanging bed. 
     
     
         13 . The method according to  claim 12 , wherein the symmetrical axle of the flanging role is turned clockwise in relation to the vertical of the translational direction v 1  by a traveling angle β. 
     
     
         14 . The method according to  claim 7 , wherein the flanging role is guided with a translational velocity v 1  during the pre-flanging, and the translational velocity v 1  has a range of about 1000 mm/s≦v 1 ≦1600 mm/s. 
     
     
         15 . (canceled)