Title:
【発明の名称】曲げ加工型
Document Type and Number:
Japanese Patent JP2825138
Kind Code:
B2
Abstract:
A bending die includes a first die portion for bending a stretch portion of a composite flange and a second die portion for bending a straight portion of the composite flange. The first die portion has a first inclined surface inclined at a first angle with respect to a horizontal direction, and the second die portion has a second inclined surface inclined at a second angle with respect to the horizontal direction. The second angle is smaller than the first angle. As a result, when the bending die is moved toward the composite flange, the first inclined surface begins to contact the stretch portion before the second inclined surface contacts the straight portion, so that a warp is prevented from being generated in the composite flange.
Inventors:
KANEYUKI TOSHIAKI
Application Number:
JP7040591A
Publication Date:
November 18, 1998
Filing Date:
March 12, 1991
Export Citation:
Assignee:
TOYOTA JIDOSHA KK
International Classes:
B21D5/01; B21D7/06; B21D11/10; B21D53/88; (IPC1-7): B21D5/01; B21D7/06
Domestic Patent References:
| JP57112926A | ||||
| JP6012223A | ||||
| JP2247019A | ||||
| JP6320609B2 | ||||
| JP6334737Y2 | ||||
| JP60175Y2 |
Attorney, Agent or Firm:
Nobuo Tabuchi