METHOD AND APPARATUS FOR BENDING MANUFACTURING OF LONG WORKPIECE

摘要

A method and an apparatus for the manufacture of a long workpiece capable of bending different sections of the workpiece at different bending radii, while preventing buckling deformation during bending of small bending radius sections and a lowering of a productivity. The speed of travel of the workpiece is controlled to be lower for sections requiring a larger degree of bending per unit length, so as to prevent the buckling deformation, and to be higher for sections requiring smaller bending per unit length, so as to prevent the lowering of the productivity.