Press shutheight adjustment in motion mechanism
US5398601A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 20, 1993 |
| Grant date | Mar 21, 1995 |
| Priority date | — |
| Expiry date | Apr 20, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T83/87
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A shutheight adjustment mechanism of a mechanical press including a piston member restrained from moving vertically by a sealed liquid-filled chamber of relatively short height. The chamber acts as a stiff liquid-spring that limits deflection and movement of the piston member and ultimately the slide or bolster. Seals define the chamber to assure that the chamber is filled with liquid. The liquid-filled chamber damps free movement between parts thereby helping to resist changes in shutheight. Liquid also is injected between the piston member and both the adjustment nut and the housing. This liquid reduces torque requirements for shutheight adjustment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.