Cutting insert and cutting edge replacement type cutting tool
US12030128B2 · kind B2 · utility
1Cited by
7References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 27, 2019 |
| Grant date | Jul 9, 2024 |
| Priority date | — |
| Expiry date | Feb 26, 2041 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23C2200/369
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A cutting insert includes first and second polygonal surfaces and a plurality of side surfaces. A corner edge that has a corner rake surface on the first polygonal surface is formed at a first corner portion, and a main cutting edge is formed from the corner edge to a second corner portion. The main cutting edge includes, at least on a corner edge side, a rake angle gradual increase region where a rake angle of a main rake surface gradually increases to a positive angle side as going from a first end portion of the corner edge toward a second corner portion side.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.