Title:
CUTTING INSERT
Document Type and Number:
WIPO Patent Application WO/2015/037447
Kind Code:
A1
Abstract:
Provided is a cutting insert equipped with a corner cutting edge of a nose R section, straight cutting edges respectively continuous with the two ends of the corner cutting edge, a rake face provided along the cutting edges and having a positive rake angle, and a breaker projection, wherein: the rake angle at the nose R section is gradually reduced going toward a terminus of the nose R section from a bisecting position thereof; a breaker width at the nose R section is set to 0.5 to 0.6 mm; and, on a bisector of the corner angle of the nose R section, a breaker wall of the breaker projection is positioned more to the corner cutting edge side than a position at which lines orthogonal to each portion of the corner cutting edge converge.
Inventors:
FUKUYAMA TOMOYUKI (JP)
Application Number:
PCT/JP2014/072517
Publication Date:
March 19, 2015
Filing Date:
August 28, 2014
Export Citation:
Assignee:
SUMITOMO ELEC HARDMETAL CORP (JP)
International Classes:
B23B27/22
Foreign References:
| JP2000107911A | 2000-04-18 | |||
| JP2013067004A | 2013-04-18 | |||
| JP2008000837A | 2008-01-10 | |||
| JPH10217008A | 1998-08-18 | |||
| EP1852200A2 | 2007-11-07 |
Attorney, Agent or Firm:
NISHIMA, Hideaki et al. (JP)
Hideaki Futajima (JP)
Hideaki Futajima (JP)
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