Cutting insert
US4681488A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 30, 1986 |
| Grant date | Jul 21, 1987 |
| Priority date | — |
| Expiry date | Jun 30, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T407/235
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The invention relates to an indexable cutting insert having a polygonal basic shape for chip forming machining, preferably for milling. The insert comprises an upper face and a lower face and edge surfaces connecting them. Each corner portion of the insert comprises a plurality of chamfers arranged at the transition between the connected edge surfaces, a first chamfer of which forms a minor cutting edge at the line of intersection with the upper face. At least two further planar, second chamfers are arranged between the first chamfer and the associated edge surface, said second chamfers forming an obtuseinternal angle with each other and forming cutting edges with the upper face and therefore the cut chip avoids compressing and avoids a quick destruction of the corner portions of the insert.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.