Process and apparatus for controlling a lifting support on sheet-metal presses
US4753100A · kind A · utility
9Cited by
2References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 3, 1987 |
| Grant date | Jun 28, 1988 |
| Priority date | — |
| Expiry date | Jun 3, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21D5/0281
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
For supporting a sheet-metal article which rests on a die and which executes an upward pivoting movement during the pressing operation, a vertically movable supporting unit is provided. The movement of the latter is coordinated with the ram movement and executed at a speed which is in a specific ratio to the speed of the ram. This ratio corresponds to the ratio of the distance between the support and the die edge facing it to half the die width.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.