Method and system for chamfering and press therefor
US6209381A · kind A · utility
6Cited by
9References
11Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jul 7, 1999 |
| Grant date | Apr 3, 2001 |
| Priority date | — |
| Expiry date | Jul 7, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21D28/22
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
In a vertical press that simultaneously forms chamfers at edges on both sides of a punched sheet material by using an upper chamfering punch and a lower chamfering punch, the lower chamfering punch is supported by conical disc springs piled on a support base.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.