US 9,808,871 B2
Cutting insert
Byung-Sun Choi, Cheongju-si (KR); Sun-Kyoo Lee, Cheongju-si (KR); Taeg-Won Lee, Cheongju-si (KR); Dong-Ryong Ji, Cheongju-si (KR); and Dong-Bok Park, Cheongju-si (KR)
Assigned to KORLOY INC., Seoul (KR)
Appl. No. 14/650,489
Filed by KORLOY INC., Seoul (KR)
PCT Filed Apr. 29, 2013, PCT No. PCT/KR2013/003663
§ 371(c)(1), (2) Date Jun. 8, 2015,
PCT Pub. No. WO2014/104489, PCT Pub. Date Jul. 3, 2014.
Claims priority of application No. 10-2012-0156491 (KR), filed on Dec. 28, 2012.
Prior Publication US 2015/0306687 A1, Oct. 29, 2015
Int. Cl. B23C 5/20 (2006.01); B23C 5/22 (2006.01)
CPC B23C 5/2213 (2013.01) [B23C 5/2226 (2013.01); B23C 5/202 (2013.01); B23C 5/207 (2013.01); B23C 2200/0433 (2013.01); B23C 2200/0477 (2013.01); B23C 2200/085 (2013.01); B23C 2200/128 (2013.01); B23C 2200/367 (2013.01); B23C 2210/168 (2013.01); B23C 2210/66 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A cutting insert, comprising:
an upper surface, a lower surface, a plurality of lateral surfaces connecting the upper surface with the lower surface, and a plurality of upper cutting edges formed between the plurality of lateral surfaces and the upper surface, the cutting insert being coupled with a coupling part of a cutting tool and comprising first and second upper cutting load reducing portions formed on the upper surface and provided at each side coming in contact with first and second upper cutting edges facing each other among the plurality of upper cutting edges, so as to reduce the cutting load; and
an one-side position setting portion provided on a first lateral surface of the plurality of lateral surfaces, in which the first lateral surface is not coming in contact with the first and second upper cutting edges, so as to set the position of the cutting insert in the coupling part, the one-side position setting portion comprising:
a first one-side position setting groove formed on an upper portion of the first lateral surface; and
a second one-side position setting groove formed on a lower portion of the first lateral surface, wherein the first one-side position setting groove and the second one-side position setting groove are eccentric to each other and are in a 180- degree rotational symmetry with each other with reference to a center point of the first lateral surface.