| 摘要 |
Provided is a bending device for bending a hollow metal blank comprising a feed mechanism for feeding being adapted for feeding a metal blank having a closed cross section in its lengthwise direction, and being constituted by a first industrial robot having a closed cross section in its lengthwise direction, capable to feed a metal blank as a welded steel pipe adapted to turn a pipe around its longitudinal axis to a position of its welded seam, not preventing bending and also to regulating the trajectory of pipe feed and any displacement a pipe from its axis when the pipe being in the feed mechanism, the first support mechanism being fixed at a first position, the heating mechanism being fixed at a second position which is located downstream of the first position in the feed direction of the metal blank, and being adapted for heating at least a part of the fed metal blank, the cooling mechanism being fixed at a third position which is located downstream in the feed direction of the metal blank, and being adapted for cooling the portion of the fed metal blank which has been heated by the heating mechanism, the second support mechanism being disposed at a fourth position which is located in the feed direction of the metal blank, and being adapted for imparting a bending moment to the heated portion of the metal blank by moving two-dimensionally or three-dimensionally while supporting the fed metal blank in at least one location, thereby processing the metal blank so as to be bent into a required shape and the deformation preventing mechanism being disposed at a fifth position which is located downstream in the feed direction of the metal blank, and being adapted for preventing deformation of the fed metal blank. |
