Die set for forming a work having a pair of flange bending parts
AssigneeNHK Spring Co., Ltd.
InventorsSosuke Kurebayashi, Yohei Mitsumori, Naoki Iwamoto
Life of this patent
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Abstract
A die set to bend a work including a pair of flange bending parts. The die set includes: a die supporting a first part of the work in a length direction; a pad including a pressure surface which holds the work with the die; and a punch which presses a second part of the work in the length direction in a thickness direction of the work while the first part of the work is held between the die and the pad. The die includes: a flat supporting surface supporting the work; a first relief part including a first inclined surface; and a second relief part including a second inclined surface.
Claims4
A die set to bend a work including a pair of flange bending parts, the die set comprising:
- a die supporting a first part of the work in a length direction;
- a pad including a pressure surface which holds the work with the die;
- and
- a punch which presses a second part of the work in the length direction in a thickness direction of the work while the first part of the work is held between the die and the pad,
- wherein the die includes:
- a flat supporting surface supporting the work;
- a first relief part including a first inclined surface a distance of which from the pad increases toward one side surface of the die from one end of the supporting surface in a width direction;
- and
- a second relief part including a second inclined surface a distance of which from the pad increases toward the other side surface of the die from the other end of the supporting surface in the width direction.
Dependencies are inferred from the claim text.