Deceleration method and apparatus for a moving bolster for a press
US5242357A · kind A · utility
1Cited by
3References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 10, 1991 |
| Grant date | Sep 7, 1993 |
| Priority date | — |
| Expiry date | Oct 10, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T483/1729
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method and apparatus for changing dies on a moving bolster for a press including a control circuit in combination with a cam-actuated deceleration valve. A cam is located at a predetermined location along a path for the moving bolster. Upon reaching the cam location when the bolster is moving toward or away from the press, the deceleration valve is actuated to inhibit and shut off a flow of air to air-operated motors on the bolster. Thereupon, the bolster moves to a stop at a predetermined location relative to the press.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.