发明名称 |
Method for removing strain from press-formed workpiece, and forming press |
摘要 |
In a forming press, a blank is pressed formed into a press-formed workpiece by means of an upper die and a lower die, while a peripheral edge portion of the blank is clamped by means of a die and a blank holder insert of the forming press. Subsequently, a central portion of the press-formed workpiece is partially held by means of the upper die and the lower die so as to draw a peripheral portion of the press-formed workpiece away from the central portion thereof, thereby removing strain from the press-formed workpiece.
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申请公布号 |
US2003145643(A1) |
申请公布日期 |
2003.08.07 |
申请号 |
US20030360970 |
申请日期 |
2003.02.06 |
申请人 |
YOSHIOKA NAOKI;KUSUNOKI KENICHI;YAGAMI YUICHI;WADA MIKIO;TAKAHASHI TSUYOSHI |
发明人 |
YOSHIOKA NAOKI;KUSUNOKI KENICHI;YAGAMI YUICHI;WADA MIKIO;TAKAHASHI TSUYOSHI |
分类号 |
B21D1/06;B21D13/02;B21D22/02;B21D22/20;B21D22/26;B21D24/00;B21D24/02;B21D25/00;(IPC1-7):B21D22/21 |
主分类号 |
B21D1/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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