Work-piece supported tool apparatus particularly adapted for use with large structural members
US4268196A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 3, 1979 |
| Grant date | May 19, 1981 |
| Priority date | — |
| Expiry date | Aug 3, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T409/306496
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Apparatus is provided for carrying, positioning and operating relatively unwieldy machine tools, such as heavy multiple-head drilling assemblies, upon massive flanged work-pieces, such as structural members for bridges, in order to more efficiently perform required operations upon the work-pieces, such as the pre-drilling of girders and their associated splice plates in a fabrication yard prior to field erection of the structure into which they will be assembled. The tool-carrying apparatus utilizes the work-piece itself as a supporting track and is provided with self-contained mechanism for propelling the apparatus to successively desired positions along the work-piece, with self-contained mechanism for releasably securing the apparatus in a desired position upon the work-piece, with self-contained mechanism for adjusting the tool vertically or/and tiltably relative to the work-piece, and with self-contained mechanism for shifting the tool toward and away from the work-piece, as well as self-contained mechanism for operating the tool itself.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.