发明名称 |
Method of forming spherical shells |
摘要 |
A process for manufacturing a spherical shell from a blank utilizing dies, comprising the steps of forming and clamping a flange portion of the blank by pressing with the dies and applying fluid pressure to an elastic diaphragm or flat metal sheet to cause the diaphragm or sheet to bulge the blank so as to form a curved shell surface.
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申请公布号 |
US4748837(A) |
申请公布日期 |
1988.06.07 |
申请号 |
US19860940493 |
申请日期 |
1986.12.10 |
申请人 |
HITACHI, LTD. |
发明人 |
KUROSAWA, HIROSHI;OCHIAI, IZUMI;ASAHINO, YOSHIO |
分类号 |
B21D22/10;B21D26/02;B21D26/021;(IPC1-7):B21D22/10 |
主分类号 |
B21D22/10 |
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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