| 摘要 |
Method for bending metal bars in order to make reinforcements with a three- dimensional geometry, comprising a step of moving a metal bar (B) in a direction of feed (D) and toward a bending bench (15) provided with a contrasting surface (22), and a first step of bending a first segment of the bar (B) on a plane coplanar to the contrasting surface (22), by means of a bending device (16) associated with the bending bench (15). Said method also comprises a torsion step of the bar (B) in which a gripping device (17), disposed upstream of the bending bench (15), clamps the bar and prevents it from rotating on itself, and the bending bench (15) is rotated, in a first direction of rotation, around an axis of rotation (Z) which is substantially aligned with the direction of feed (D) so that the first bent segment of the bar (B), during the first bending step, due to contrast against the contrasting surface (22) of the bending bench (15), is inclined by a determinate angle (a). |
