Title:
自動車用構造部材、およびその製造方法、金型
Document Type and Number:
Japanese Patent JP6672933
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a structural member for vehicle in which shape defect by camber or twist, one of springback is rectified without using a generally used additional process such as emboss or bead influencing the shape of the structural member and without influencing the shape, and to provide the production method and device therefor.SOLUTION: A production method for a structural member for vehicle is characterized by restraining ununiformity of stress generated in components at press molding by pinching the member and pressing a bruise 50 to prevent occurrence of camber or twist, one of shape defective phenomenon when producing hat-shaped structural members for vehicle having a curved shape above and below in a longitudinal direction, having the curved shape left and right, and having the curved shape both above and below, and left and right in the longitudinal direction by press-molding a high-strength steel plate.SELECTED DRAWING: Figure 7
Inventors:
Ryo Yonebayashi
Koichi Sato
Nikaido Hitoshi
Koichi Sato
Nikaido Hitoshi
Application Number:
JP2016059452A
Publication Date:
March 25, 2020
Filing Date:
March 24, 2016
Export Citation:
Assignee:
Nippon Steel Corporation
International Classes:
B21D22/26; B21D5/01; B21D22/02; B21D24/00
Domestic Patent References:
| JP8174074A | ||||
| JP5382281B1 |
Attorney, Agent or Firm:
Patent Business Corporation Najima Patent Office