Radius end mill and cutting insert
US8845241B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 31, 2009 |
| Grant date | Sep 30, 2014 |
| Priority date | — |
| Expiry date | Jan 30, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T407/245
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A radius end mill including an end mill body which is rotated around an axis thereof; a chip discharge flute being provided at an outer periphery of a tip portion of the end mill body; a gash being provided at a tip portion of the chip discharge flute; a rake face being formed on a wall face facing an end-mill rotational direction in the chip discharge flute or the gash; a cutting edge being formed on the rake face; the cutting edge including an end cutting edge, an outer peripheral cutting edge, and a convex circular-arc-shaped corner cutting edge; the end cutting edge being formed at a side ridge portion on the tip portion of the rake face; the outer peripheral cutting edge being formed at a side ridge portion on the outer peripheral side of the rake face; the convex circular-arc-shaped corner cutting edge being formed at a corner side ridge portion formed by the end cutting edge and the outer peripheral cutting edge; wherein the corner cutting edge has a positive cutting edge inclination angle; and the portion of the rake face on the side of the side ridge portion along at least a portion of the corner cutting edge is inclined toward the rear side in the end-mill rotational dire…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.