Metal cutting insert and a milling tool
US9975188B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 7, 2015 |
| Grant date | May 22, 2018 |
| Priority date | — |
| Expiry date | Apr 9, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T407/235
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An indexable cutting insert for a milling tool includes an upper side defining an upper extension plane and a lower side defining a lower extension plane parallel to the upper extension plane. A side surface connects the upper side and the lower side, the side surface including a plurality of upper main clearance surfaces and secondary clearance surfaces. At least six identical and alternately usable upper cutting edges extend around the upper side. Each cutting edge has a chip removing main cutting edge portion and at least one secondary cutting edge portion. The main cutting edge portion is formed in a transition between the upper side and one of the upper main clearance surfaces. The secondary cutting edge portion is formed in a transition between the upper side and one of the secondary clearance surfaces between two main cutting edge portions. The upper main clearance surfaces are formed at an obtuse inner angle α with respect to the upper extension plane as seen in side elevation view.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.