Improvment to the blank holder force regulating system in a press
US6032506A · kind A · utility
7Cited by
5References
14Claims
0Family size
Assignees
Inventor
Key dates
| Filing date | Aug 17, 1998 |
| Grant date | Mar 7, 2000 |
| Priority date | — |
| Expiry date | Aug 17, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21D24/14
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A stamping press comprising a blank-holder force-regulating system using fluid-operated compensating cylinders (5, 7). The variation in the force in the blank-holder pressure-regulating areas is thus compensated so as to maintain a predetermined constant pressure in the conventional blank-holder area. This pressure in the conventional blank-holder area can, by virtue of the invention, according to certain alternative embodiments, also be made to vary.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.