发明名称 |
Vorrichtung zum Hochdruckformen und Hochdruckschneiden |
摘要 |
<p>A tubular member is manufactured in a hydroforming and hydroshearing apparatus. A substantially right circular cylindrical workpiece is placed in a die and pressurized to hydroform a substantially rectangular tubular product. The workpiece is presheared during the pressurization period and is fully sheared during the withdrawal of a plurality of plunger members while the internal pressure is maintained. The plunger members are positioned in the die by respective power cylinders which control the withdrawal thereof.</p> |
申请公布号 |
DE69913646(D1) |
申请公布日期 |
2004.01.29 |
申请号 |
DE1999613646 |
申请日期 |
1999.10.15 |
申请人 |
GENERAL MOTORS CORP., DETROIT |
发明人 |
GHIRAN, MIKE MIRCEA;SHAH, SANJAY MAHASUKHLAL;JOYNER, REGINALD CLARK |
分类号 |
B21D26/02;B23D21/14;(IPC1-7):B23D21/00 |
主分类号 |
B21D26/02 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|