Guide mechanism for precision drilling and reaming
US4915551A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 26, 1988 |
| Grant date | Apr 10, 1990 |
| Priority date | — |
| Expiry date | May 26, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T408/97
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Apparatus for precision positioning of guide bushings for roughing tools and for finishing tools so that preformed holes in workpieces may be initially subjected to a roughing operation by roughing tools and subsequently to a finishing operation by finishing tools. The guide bushings are mounted on the ends of carrier arms. The carrier arms encircle a workpiece holder. Each carrier arm is mounted for swinging movement on a pivot axis spaced radially from the workpiece holder. The carrier arms are swingable from a position in which the bushings on one end of the arms are aligned with holes in a workpiece mounted on the workpiece holder, to another position in which the guide bushings on the other end of the arms are aligned with holes in the workpiece. Power is provided for simultaneously swinging all of the carrier arms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.