Deceleration method and apparatus for a moving bolster for a press
US5121538A · kind A · utility
4Cited by
2References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 29, 1990 |
| Grant date | Jun 16, 1992 |
| Priority date | — |
| Expiry date | Jun 29, 2010 |
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 ramp is located at a predetermined location along a path for the moving bolster. Upon reaching the ramp location when the bolster is moving toward 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 moves to a stop at a predetermined location relative to the press.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.