Patent ID: 6655182
Filing Date: 2003-12-02
Classification: B21D

Abstract:
An apparatus for reshaping a tube, said tube having a wall with a periphery, an inner surface, an outer surface, a longitudinal axis and a closed cross-section having at least one radius of curvature, comprising:means configured to rotate said tube about said longitudinal axis in said apparatus; a first shaping roller parallel with said longitudinal axis of said tube and configured to engage said outer surface of said tube; a second shaping roller parallel with said longitudinal axis of said tube and configured to engage said inner surface of said tube; and means configured to move said first and second shaping rollers in relation to each other and in relation to said rotation means, in order to apply bending forces to said tube wall for altering said at least one radius of curvature and thereby reshaping said closed cross-section of said tube.