Method and apparatus for eliminating free clearances in a press shutheight adjustment mechanism
US6715409B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 22, 2002 |
| Grant date | Apr 6, 2004 |
| Priority date | — |
| Expiry date | May 22, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T83/87
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An apparatus for use in a press machine eliminates the free clearances present between the threaded portions of a screw and adjustment nut assembled in a shutheight adjustment mechanism. A hydraulic assembly directs a pressurized fluid against an outer periphery of the adjustment nut to effectively compress the adjustment nut and cause its threaded portion to be displaced into interlocking engagement with the threaded portion of the screw. Alternatively, the hydraulic assembly may be arranged to hydraulically pressurize an interior space of the screw to effectively expand the screw and cause its threaded portion to be displaced into interlocking engagement with the threaded portion of the adjustment nut.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.