Korloy Inc.

Min Seok Oh

Young Heum Kim

Nam Seon Lee

Ki Chan Nam

Hyo San Kim

Tae Kyun Kim

Sang Yong Lee

Seon Ho Shin

Hyoung Ju Jung

Jae Ho Kim

Byeong Yun Lee

Seung Ju Choi

Cutting insert for machine tools for metalworking

A cutting insert according to an embodiment of the present disclosure relates to a circular double-sided cutting insert including a top surface, a bottom surface, a lateral surface, and a cutting edge, and mounted to a cutting tool, in which a plurality of clearance surfaces and a plurality of fastening surfaces are located on the lateral surface, and among the plurality of fastening surfaces, a fastening surface, which is brought into contact with the cutting tool upon mounting of the cutting insert to the cutting tool, forms an acute angle with respect to the top surface or the bottom surface acting as a rake surface.

Cutting insert and cutting tool equipped with the same

Cutting insert

A cutting insert of the present invention comprises: an upper surface and a lower surface; first and second lateral surfaces; first and second cutting edge parts; and corner cutting edges, wherein the first cutting edge part includes: a first main cutting edge for forming one end at a portion spaced farthest away from the corner cutting edge; a first sub-cutting edge connected to the corner cutting edge; and a first auxiliary cutting edge for connecting the first main cutting edge and the first sub-cutting edge so as to form a step between the same, and the first sub-cutting edge and the corner cutting edge form one straight line when viewed toward the first lateral surface, and are inclined upward in the direction opposite to the direction toward the lower surface while gradually going in the direction toward the second cutting edge part.

Cutting insert and cutting tool on which same is mounted

The technical objective of the present invention is to provide a cutting insert that can minimize a phenomenon in which the cutting insert is lifted up from a seat surface of a cutting tool while a cutting process is being performed, and can increase an area by which the cutting insert is fastened to the cutting tool. To this end, the cutting insert of the present invention comprises: a principal surface; a fastening surface opposite to the principal surface, the fastening surface being placed on the seat surface of the cutting tool; and a screw passage hole formed through each of central portions of the principal and fastening surfaces, wherein a screw is fastened to the cutting tool through the screw passage hole; and first and second long grooves extending across the fastening surface, wherein each of the first and second long grooves includes: a proximal sidewall adjoining a first adjacent fastening portion of the fastening surface and making an acute angle with the first adjacent fastening portion; a distal sidewall adjoining a second adjacent fastening portion of the fastening surface and making an angle with the second adjacent fastening portion; and a ceiling wall connecting the proximal and distal sidewalls, wherein the proximal sidewall is located closer to the screw passage hole than the distal sidewall is located to the screw passage hole.

Cutting insert and cutting tool having same mounted thereon

Growing community of inventors

Cheongju-si, South Korea

Min Seok Oh