CUTTING INSERTS AND CUTTING TOOLS USING SAME

WIPO Patent Application WO/2014/034056

A1

Provided is a six-corner cutting insert that can be formed by grinding. Faces A and B are hexagonal shapes having obtuse angle vertices (A0, B0) between acute angle vertices (A1 to A3, B1 to B3) with an internal angle (α) of 70° to 85°, and a side face (4) comprises six faces, a first inclined face (4a) to a sixth inclined face (4f), forming right angles with the faces A and B. Corner sections (7a to 7f), where a main cutting edge and a front cutting edge intersect, are chamfered, where: the major cutting edges are ridges (6a, 6b) where the odd-numbered inclined faces (4a, 4c, 4e) intersect the face A, and the even-numbered inclined faces (4b, 4d, 4f) intersect the face B; the front cutting edge is a ridge (6c) where the odd-numbered inclined faces (4a, 4c, 4e) intersect the even-numbered inclined faces (4b, 4d, 4f) at the acute angle vertices (A1_B1, A2_B2, A3_B3); the first inclined face to the sixth inclined face are rake faces or front flank faces, and when one of the odd-numbered inclined faces (4a, 4c, 4e) and even-numbered inclined faces (4b, 4d, 4f), with respect to the front cutting edge, is the rake face, the other is the front flank face; and the faces A and B are side flank faces.

KINUKAWA TATSUJI (JP)
NAKANO YUSUKE (JP)

PCT/JP2013/004976

March 06, 2014

August 23, 2013

Click for automatic bibliography generation  

NGK SPARK PLUG CO (JP)

B23B27/14; B23C5/20; B23B29/00; B23B29/02; B23C5/06

JP2010064224A	2010-03-25
JP2012148400A	2012-08-09
JPH09174323A	1997-07-08
JP2009541071A	2009-11-26
JPS5043588A	1975-04-19

AOKI, Noboru et al. (JP)
Aoki 昇 (JP)

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