| 摘要 |
PURPOSE:To obtain a titled correcting tool improved in accuracy of forming and production efficiency of shape steel by providing a stationary pressing rod and a movable pressing rod that press the flange part of shape steel from both sides between frames of roll stands and correcting during roll forming. CONSTITUTION:Roll stands 2, 3 of a correcting tool 1 for roll forming support pivotally forming rolls 11, 13 in portal frames 9, 9. The stand 2 performs final forming of shape steel 6, and the stand 3 bends only V-shaped part 4 and pierces holes 7 before final forming. The flange 5 of the shape steel 6 is pressed from above and below by a stationary pressing rod 13 and a movable pressing rod 14 spanned between the frames 9, 9. By this way, burr 22 etc. around holes 7 of the flange formed by piercing is corrected and flattened. At the same time, waving deformation of the flange part 5 is prevented while it runs between stands 2, 3. Final forming is made easy and the accuracy of forming of the shape steel is improved. |
