| 摘要 |
PURPOSE: To simply correct the inclination of shapes by straightening bending with a three-roll bending process after inclining a part of a second structural shape segment outward during roughly rolling the shapes which provides the second shapes segment at right angle in a first shapes segment. CONSTITUTION: One of nearly cylindrical pressing rollers 4, 5 is respectively arranged in both outside surfaces of the shapes 1, and the pressing rolls 4, 5 are driven in the rotational direction shown by an axial line 10 with an electronic driving source. Two pairs of facing rolls 6, 16 and 7, 17 are respectively arranged in front and behind of the pressing roll 4. The inner surface of a flange part 2b which is bent with the pressing roll 4 is formed with the facing rolls 6, 16, 7, 17. The pressing roll 5 and the facing rolls 8, 18, 9, 19 are arranged in the inverse side, the inclination of the flange part 2b is corrected among rolls 5, 8, 9, whereby a straight and parallel flange 2 is formed. |
