| 发明名称 |
PRESS MOLDING METHOD, MANUFACTURING METHOD FOR PRESS-MOLDED COMPONENT, AND METHOD FOR DETERMINING PREFORM SHAPE FOR USE IN SAID METHODS |
| 摘要 |
A method is provided for press forming a product having a shape of a top board portion, a vertical wall portion continuously formed from the top board portion and a flange portion continuously formed from the vertical wall portion at a press process of two or more stages, wherein a convex or concave bead shape is preformed in a position of a flat metal sheet as a raw material corresponding to a neighborhood of a position generating breakage or flange wrinkles when the raw material is formed into a product shape, and thereafter a product shape is press formed from the raw material having the preformed bead shape. |
| 申请公布号 |
US2016354825(A1) |
申请公布日期 |
2016.12.08 |
| 申请号 |
US201515114534 |
申请日期 |
2015.01.26 |
| 申请人 |
JFE STEEL CORPORATION |
发明人 |
Shinmiya Toyohisa;Shiozaki Tsuyoshi;Iizuka Eiji;Yamasaki Yuji |
| 分类号 |
B21D22/02 |
主分类号 |
B21D22/02 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A method for press forming a product having a shape of a top board portion, a vertical wall portion continuously formed from the top board portion and a flange portion continuously formed from the vertical wall portion at a press process of two or more stages, wherein a convex or concave bead shape is preformed in a position of a flat metal sheet as a raw material corresponding to a neighborhood of a position generating breakage or flange wrinkles when the raw material is formed into the product shape, and thereafter the product shape is press formed from the raw material having the preformed bead shape. |
| 地址 |
Tokyo JP |
