Clamping and drilling device for a curved plate
US5325581A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 16, 1993 |
| Grant date | Jul 5, 1994 |
| Priority date | — |
| Expiry date | Aug 16, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T408/3809
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The device includes a clamping assembly which has a stationary upright post with upper and lower casings coaxially mounted to the upright post, a threaded shaft to adjust a vertical height of the upper and lower casings, a drilling assembly which is adjacent to the clamping assembly and which has first and second drilling bits that respectively extends toward an axis of the upright post in a parallel manner and a worm mechanism for adjusting a vertical height between the two drilling bits and an index apparatus which can rotate the clamping assembly to a predetermined angle relative to the drilling assembly. The upper and lower casings have radially movable pieces with clamping members thereon. A synchronous moving unit moves the movable pieces relative to the upright post to define a distance which is equal to a radius of curvature of a curved plate that is to be clamped and drilled by the device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.