FLANGING MACHINE AND METHOD FOR SPIN-FLANGING WORKPIECES
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)