Patent ID: 6745606
Filing Date: 2004-06-08
Classification: B21D,Y10T

Abstract:
A machine for folding over a peripheral flange of a cylindrical shell comprising a support for the shell; a forming tool having a pre-bending section and a final bending section angularly related to each other about a plane extending parallel to said support; a drive (1) effecting relative axial movement of said support and said forming tool to bring said forming tool into engagement with a peripheral flange of a shell positioned on said support, (2) effecting relative radial movement of said support and said forming tool for determining which section of said forming tool engages the peripheral flange of the shell positioned on said support independently of the relative axial movement and (3) effecting relative rotation of said support and said forming tool to deform a circumferential portion of the peripheral flange of the shell positioned on said support; and a control operating said drive for first partially bending the peripheral flange of the shell positioned on said support around a circumferential area by said pre-bending section of said forming tool and then completing the bending thereof by said final bending section of said forming tool.