BENDING APPARATUS

摘要

Provided is a bending device for manufacturing a steel bent member with high productivity and high dimensional accuracy. A bending device (10) provided with: a first support mechanism (11) for supporting a steel pipe (17) while feeding the steel pipe; a heating mechanism (13) for heating a part of or the whole of the steel pipe (17); a cooling mechanism (14) for forming a high-temperature portion in a part of the steel pipe (17) by cooling the portion of the steel pipe (17) which is heated by the heating mechanism (13); a second support mechanism (15) for bending the steel pipe (17) in a desired form by applying bending moment to the high-temperature portion by moving the steel pipe (17) in the two-dimensional or three-dimensional direction while supporting at least one portion of the steel pipe (17); and a deformation prevention mechanism (16) for preventing the steel pipe (17) from being deformed. Either the second support mechanism (15) and/or the deformation prevention mechanism (16) is provided with a chuck which has a tubular body having a circular, polygonal, or irregularly shaped lateral cross-section and grips the steel pipe (17).