Throwaway insert and pin mirror cutter using the same
US6764254B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 2, 2001 |
| Grant date | Jul 20, 2004 |
| Priority date | — |
| Expiry date | Aug 2, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T407/23
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A throwaway insert for a pin mirror cutter in which eight corners can be used and which the cutting performance and machining accuracy can be increased by making positive the axial rake angle of the peripheral cutting edge. Side faces of a negative insert of a parallelogrammic shape are formed by two surfaces connecting to each other at an angle so as to have a first included angle and a second included angle. Further, independent arcuate surfaces are provided at the intersections between the arcuate corner sides of each of the side faces and the top and bottom surfaces and the intersections between the obtuse corner sides and the top and bottom surfaces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.