Taegutec, Ltd.

Taegutec Co.

Chang Gyu Park

Chang Hee Choi

Kang Sool Jung

Su Jin Ryu

Sung Kook Cheon

Jae Seong Kim

Jae Wook Lee

Sang Won Kim

Su-Jin Ryu

Dong Hyun Kim

Sung Pil Choi

Hee-Seok Kim

A cutting tool assembly includes: a cutter body extending perpendicularly from a bottom surface and including a cylindrical portion with a rotational axis; insert pockets disposed and formed concavely in the bottom surface and the cylindrical portion to be spaced apart from each other along a circumferential direction; fixed cutting inserts mounted within the insert pockets and disposed at the outermost portion of the cutter body in a radial direction; and stepped cutting inserts mounted within the insert pockets, the stepped cutting insert being disposed between two adjacent fixed cutting inserts. The fixed cutting insert is disposed to have an identical length from the rotational axis and an identical length from the bottom surface. At least one stepped cutting insert is disposed to have a different length from the rotational axis and a different length from the bottom surface compared to the remaining stepped cutting inserts.

Cutting tool assembly

Cutting insert

An insert configured to be assembled to a tool for cutting a workpiece, includes: an upper surface including first to fourth upper corner portions formed in respective quadrants divided by a first imaginary vertical axis and a first imaginary horizontal axis that are perpendicular to each other; and a lower surface formed below the upper surface in a height direction and including first to fourth lower corner portions formed in respective quadrants divided by a second imaginary vertical axis and a second imaginary horizontal axis that are perpendicular to each other. A lower ridge portion protruding downward in the height direction is formed on the lower surface, and extends across the second and fourth lower corner portions, which are symmetrical with respect to a center of the lower surface.

Insert and cutting tool assembly comprising same

A cutting insert includes an upper surface, a lower surface opposite to the upper surface, a first side surface and a second side surface configured to connect the upper surface and the lower surface, a mounting hole formed to penetrate the upper surface and the lower surface, a first cutting edge formed at an edge of the upper surface that meets the first side surface, and a second cutting edge formed at an edge of the upper surface that meets the second side surface. The lower surface includes a ridge portion, and a first inclined surface and a second inclined surface positioned on both sides of the ridge portion as a boundary. When looking at the lower surface, the first inclined surface and the second inclined surface have asymmetric shapes with respect to the ridge portion.

Cutting insert and rotary cutting tool including same

A rotary cutting tool for slotting and a cutting insert replaceably mounted to such a rotary cutting tool. The cutting insert is mounted to an insert pocket of a tool body of the rotary cutting tool and is pressed by an elastic pressure portion provided in the tool body. The cutting insert has an upper surface, a lower surface and four peripheral side surfaces. The top and lower surfaces have an inclined surface pressed by the elastic pressure portion. When the cutting insert is mounted to the insert pocket, the inclined surface of the upper surface is pressed by the elastic pressure portion. The inclined surface is inclined with respect to a cross section of the cutting insert such that the lower surface and two peripheral side surfaces of the cutting insert are contacted with the insert pocket by pressure of the elastic pressure portion.

Rotary cutting tool and cutting insert therefor

A cutting tool assembly has a cutter body, a clamp pin, a cutting insert and a set screw. The clamp pin is inserted to the cutter body to secure the cutting insert to an insert pocket. The set screw is fastened to a threaded hole of the cutter body to press the clamp pin toward the insert pocket. A side surface of the cutting insert contacts a side wall of the insert pocket at a first contact portion. A head of the clamp pin contact an inner peripheral surface of a bore of the cutting insert at a second contact portion. The first and second contact portions are located such that a moment acts on the cutting insert toward the base wall of the insert pocket around the first contact portion.

An indexable cutting insert is suitable for vertical and oblique machining. The cutting insert has top and bottom surfaces, first to fourth side surfaces extending between the top and bottom surfaces, and a screw hole passing through the top and bottom surfaces. The top surface has a mounting surface of a flat surface. The top and bottom surfaces are rotationally symmetric with each other. A cutting edge is formed at a junction between the top surface and the adjacent first and second side surfaces. A non-cutting edge is formed at a junction between the top surface and the adjacent third and fourth side surfaces. The first and second side surfaces form an acute angle with a plane extending from the mounting surface of the top surface. The third and fourth side surfaces form an obtuse angle with the plane extending from the mounting surface of the top surface.

Cutting insert and cutting tool including the same

A cutting insert has a circular top surface, a bottom surface shaped to be identical to the top surface, a cylindrical side surface for connecting the top and bottom surfaces, and cutting edges formed between the top and side surfaces and between the bottom and side surfaces. The side surface of the cutting insert has a plurality of rotation prevention surfaces substantially perpendicular to the top and bottom surfaces in the circumferential direction of the side surface.

Double-sided cutting insert having a circular shape and cutting tool using the same

A cutting tool includes one or more cutting portions. Each of the cutting portions has a cutting insert and an insert pocket for mounting the cutting insert. The insert pocket has a top surface with one or more projecting portions with a shape of serration, and a bottom supporting surface. The cutting insert has a top surface mating with said projecting portions of the insert pocket, and a bottom surface mating with the bottom supporting surface of the insert pocket. The top surface of the cutting insert has one or more outwardly sloped surfaces mating with the projecting portions of the insert pocket, and one or more inwardly sloped surfaces positioned off the projecting portions.

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Daegu, South Korea

Chang Gyu Park