Tool bit with undercut hook radius
US5868531A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 5, 1997 |
| Grant date | Feb 9, 1999 |
| Priority date | — |
| Expiry date | Sep 5, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T407/28
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A tool bit for a tube end squaring tool includes a cutting edge produced by machining or grinding a hook radius in the tool bit stock on the entrance angle side of the cutting edge and an undercut portion within the hook radius just rearwardly of the cutting edge on the work entrance side thereof to cause separation from the hook radius area of metal chips parted from a metal workpiece by the cutting edge to reduce friction and workpiece metal buildup on or adjacent the cutting edge. The undercut configuration reduces manufacturing costs of the tool bit which otherwise would require additional finishing operations to obtain the same reduction of friction at the cutting edge area.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.