Press adjustment screw mechanism
US5345861A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 20, 1993 |
| Grant date | Sep 13, 1994 |
| Priority date | — |
| Expiry date | Apr 20, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T83/8696
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A shutheight adjustment mechanism for a mechanical press including an adjustment screw rotatable to vary shutheight. A pressurized chamber is formed between the adjustment screw and the housing of the adjustment mechanism. Fluid is injected into the chamber to create an oil squeeze-film capable of supporting high impulse working loads and also preload the adjustment screw in the direction of press closure. A rebound damping mechanism is included having a two part takeup nut assembly. Upon actuation of the takeup nut assembly, the two part takeup nut assembly separates to bear on opposite facing thread surfaces of the adjustment screw thereby reducing clearance space and possible changes in shutheight.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.