| 摘要 |
PURPOSE:To enlarge the corresponding ranges of a bending angle and bending diameter by bearing a slider to one end of a freely extending and contracting supporting arm and arranging a freely adjustable corrected projecting part on the linking member of the supporting arm. CONSTITUTION:The main part of a bending die 1 is composed with a fixed supporting arm 10 as the center, by arranging plural freely extending and contracting supporting arm 30 at both sides, linking one end of the supporting arms 10, 30 by a linking member 40 and the other end to a slider 61 respectively. In this case the arm 30 is extended and contracted at its rod 34 via a worm gear and the slider 61 makes the arms 10, 30 freely approachable and separatable by the equal pitch movement of a feeding rod 64. The corrected projecting part 41 which is adjustable and provided on the linking member 40 corrects the curvature. In this way the corresponding range of the bending angle and bending diameter of the bending die 1 can be enlarged.
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