Fluid operated chuck and methods of operation
US5441284A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 1, 1994 |
| Grant date | Aug 15, 1995 |
| Priority date | — |
| Expiry date | Mar 1, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T279/26
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Workpiece chucking apparatus includes a chuck body mounting a first plurality of prepositioning lock-up fingers and a second plurality of gripping fingers. The lock-up fingers are biased together radially outwardly or inwardly into engagement with a peripheral wall of a workpiece to initially locate and support the wall of the workpiece in a centered position with respect to a central axis of the chucking apparatus. An inflatable bladder flexes the remaining gripping fingers into gripping engagement with the peripheral wall to further radially support the wall in preparation for machining, without disturbing the prepositioning of the workpiece.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.