Patent ID: 6223575
Filing Date: 2001-05-01
Classification: B21C,B21D

Abstract:
A station in a tube forming machine comprising at least one set of forming rolls, said set including a first V-shaped bottom roll and a first top roll opposing said first V-shaped roll, said first V-shaped bottom roll and said first top roll defining a first group of three workpiece engagement locations, said first group of three locations defining a first three-point bending arrangement between said at least one set of forming rolls,said top roll being adjustable toward and away from said bottom roll with said top roll being movable to a plurality of positions defining a line of adjustability, and said bottom roll being mounted rotatable to a bottom roll holder by a bottom roll support shaft, said bottom roll support shaft being generally perpendicular to said line of adjustability, whereby said top roll and said bottom roll are useable together to form tubes with different diameters.