Method and apparatus for bending a metal member
AssigneeCanon Kabushiki Kaisha
InventorKen Matsui
Life of this patent
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Abstract
A bending apparatus for bending a metal member includes at least one die, a punch disposed on an opposite side of the die through the metal member for pressurizing the metal member by relatively moving with respect to the die to perform bending, and a knock out die for supporting the metal member when the bending is performed. Friction generated on a surface of the knock out die for receiving the metal member becomes smaller continuously or gradually from a center portion toward side portions thereof in a bending ridge line direction.
Claims12
A bending apparatus for bending a metal member, comprising:
- at least one die;
- a punch disposed on a side opposed to a side of the at least one die through the metal member, for pressurizing the metal member by relatively moving with respect to the at least one die to perform bending;
- and
- a knock out die for supporting the metal member when the bending is performed,
- wherein friction generated on a surface of the knock out die for receiving the metal member becomes smaller continuously or gradually from a center portion toward side portions thereof in a bending ridge line direction.
2-4. (canceled)
A bending method of bending a metal member, comprising:
- disposing a metal member on at least one die;
- pressurizing the metal member with a punch to perform bending;
- and
- providing a knock out die for supporting the metal member, wherein, when the bending is performed, friction generated on a surface of the knock out die becomes smaller continuously or gradually from a center portion toward side portions thereof in a bending ridge line direction.
7-9. (canceled)
Dependencies are inferred from the claim text.