| 发明名称 |
MANUFACTURING METHOD AND MANUFACTURING DEVICE OF SHEARED COMPONENTS |
| 摘要 |
In a manufacturing method of sheared components, the shearing including a process of fixing a workpiece to a die, and a process of punching the workpiece by bringing a punch and the die relatively close to each other, is performed a plurality of times, and when a shearing sequence is started, the shearing is performed by using a punch including a first cutting edge having a first tip end surface which opposes the workpiece, and a first retracting surface which retracts from the first tip end surface considering an approaching direction to the die as a standard; and a die including a second cutting edge having a second tip end surface which opposes the workpiece, and a second retracting surface which retracts from the second tip end surface considering an approaching direction to the punch as a standard. |
| 申请公布号 |
US2017080475(A1) |
申请公布日期 |
2017.03.23 |
| 申请号 |
US201515309142 |
申请日期 |
2015.05.07 |
| 申请人 |
NIPPON STEEL & SUMITOMO METAL CORPORATION |
发明人 |
MATSUNO Takashi;SATO Koichi;YASUTOMI Takashi |
| 分类号 |
B21D28/02;B21D28/14 |
主分类号 |
B21D28/02 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A manufacturing method of sheared components which is a method for manufacturing a plurality of sheared components by performing a shearing a plurality of times by using a punch and a die with respect to a workpiece of which a Vicker's hardness is equal to or greater than 0.3 times and less than 1.0 times the lower one of the Vicker's hardness of the punch and the Vicker's hardness of the die,
wherein the shearing including a process of fixing the workpiece to the die, and a process of punching the workpiece by bringing the punch and the die relatively close to each other, is performed a plurality of times, and wherein, when a shearing sequence is started, the shearing is performed by using: a punch including a first cutting edge having a first tip end surface which opposes the workpiece, and a first retracting surface which retracts from the first tip end surface considering an approaching direction to the die as a standard; and a die including a second cutting edge having a second tip end surface which opposes the workpiece, and a second retracting surface which retracts from the second tip end surface considering an approaching direction to the punch as a standard. |
| 地址 |
Tokyo JP |
