Sheet metal forming process and system |
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| 申请号 | US14395098 | 申请日 | 2013-04-18 | 公开(公告)号 | US09908164B2 | 公开(公告)日 | 2018-03-06 |
| 申请人 | EXPAL SYSTEMS S.A; | 发明人 | Francisco Javier Ramírez Fernández; Rosario Domingo Navas; | ||||
| 摘要 | The invention relates to a method and system for forming a metal sheet, preferably in the form of a disc, in order to obtain an essentially cylindrical and essentially hollow end metal part having a base thickness that is essentially greater than the thickness of its walls. More specifically, the invention relates to the metalworking sector and, in particular, to the production of ammunition cases or shells. | ||||||
| 权利要求 | |||||||
| 说明书全文 | |||||||
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