Patents Assigned to Taegutec Ltd.
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Patent number: 11969807Abstract: 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.Type: GrantFiled: January 15, 2020Date of Patent: April 30, 2024Assignee: TaeguTec Ltd.Inventors: Chang Gyu Park, Jae Seong Kim
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Publication number: 20240131599Abstract: A cutting tool assembly includes: a tool body extending in a longitudinal direction; a lower jaw extending and protruding forward from the tool body; a clamping portion disposed to be spaced apart from a top surface of the tool body; an upper jaw extending forward from the clamping portion and facing the lower jaw; an elastic connecting portion elastically connecting the tool body and the clamping portion to each other on a rear side of the clamping portion; a clamping screw penetrating the clamping portion downwardly and fastened to the tool body; and an upper coolant channel through which coolant flows, the upper coolant channel penetrating the elastic connection part, the clamping portion, and the upper jaw. In a width direction perpendicular to the longitudinal direction, a width of the clamping portion is in a range of 40% to 80% of a width of the tool body.Type: ApplicationFiled: October 24, 2022Publication date: April 25, 2024Applicant: TAEGUTEC LTD.Inventor: SANG YOUNG LEE
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Patent number: 11819927Abstract: A cutting insert capable of performing front-turning and high feed back-turning according to one embodiment includes: an upper surface; a lower surface opposite to the upper surface in a vertical direction; a side portion configured to connect the upper surface and the lower surface; a mounting hole extending through the upper surface and the lower surface; and a plurality of cutting edges formed at edges where the upper surface meets the side portion, wherein the upper surface has one or more cutting corners, the plurality of cutting edges include a major cutting edge and a minor cutting edge extending from the cutting corner, and a representative inclination of the minor cutting edge used for high feed back-turning is greater than a representative inclination of the major cutting edge used for front-turning with respect to a virtual reference plane perpendicular to the vertical direction.Type: GrantFiled: June 11, 2021Date of Patent: November 21, 2023Assignee: TaeguTec Ltd.Inventor: Chang Won Jeong
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Patent number: 11813679Abstract: A cutting tool assembly includes a tool shank having a coupling opening, and an insert holder having an insert body to which an insert is coupled and detachably attached. A coupling protrusion protrudes from one surface of the insert body and is detachably coupled to the tool shank. Located on the coupling protrusion are a tapered contact portion which comes into contact with the coupling opening and provides a fixing force to fix the insert holder to the tool shank, and a contact surface at a rear end of the tapered contact portion which couples to a fastening member.Type: GrantFiled: February 10, 2021Date of Patent: November 14, 2023Assignee: TaeguTec Ltd.Inventor: Sang Young Lee
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Patent number: 11759869Abstract: A cutting insert for drilling includes an upper surface, a lower surface formed on an opposite side of the upper surface, a side surface connecting the upper surface and the lower surface; a cutting edge formed at an intersection of the upper surface and the side surface, and a ridge portion formed to protrude upward from the upper surface to facilitate chip control. The ridge portion includes a ridge body spaced apart from the cutting edge and disposed at a central portion of the cutting insert for drilling; and a ridge extension portion extending from a vicinity of a corner of the ridge body in a direction parallel to the cutting edge.Type: GrantFiled: July 4, 2018Date of Patent: September 19, 2023Assignee: TaeguTec, Ltd.Inventor: Kee Young No
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Patent number: 11731203Abstract: A cutting insert and a cutting tool assembly for cutting a workpiece. The cutting tool assembly includes a cutting insert having an upper surface that has a quadrilateral shape so as to include first to fourth insert corner portions, and a shim configured to support the insert. The insert includes an upper surface and a lower surface on which first to sixth inclined mounting portions are respectively formed. The shim simultaneously supports the first to third inclined mounting portions, or simultaneously supports the fourth to sixth inclined mounting portions.Type: GrantFiled: March 26, 2019Date of Patent: August 22, 2023Assignee: TaeguTec Ltd.Inventors: Chang Hee Choi, Chang Won Jeong
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Patent number: 11717895Abstract: Embodiments of a cutting insert are provided. The cutting insert includes an upper surface, a lower surface, a plurality of side surfaces extending between the upper surface and the lower surface, an insert hole extending through the upper surface and the lower surface, and a corner portion provided with a cutting edge. At least one of the upper surface and the lower surface has a plurality of recesses extending between the insert hole and the corner portion. The plurality of recesses includes a first recess into which one portion of the mounting portion is inserted when the cutting insert is supported by the mounting portion, and a second recess into which another portion of the mounting portion is inserted when the cutting insert is supported by the mounting portion. The second recess has a side wall spaced apart from another portion of the mounting portion.Type: GrantFiled: May 21, 2021Date of Patent: August 8, 2023Assignee: TaeguTec Ltd.Inventors: Chang Hee Choi, Chang Won Jeong
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Publication number: 20220395910Abstract: A cutting insert capable of performing front-turning and high feed back-turning according to one embodiment includes: an upper surface; a lower surface opposite to the upper surface in a vertical direction; a side portion configured to connect the upper surface and the lower surface; a mounting hole extending through the upper surface and the lower surface; and a plurality of cutting edges formed at edges where the upper surface meets the side portion, wherein the upper surface has one or more cutting corners, the plurality of cutting edges include a major cutting edge and a minor cutting edge extending from the cutting corner, and a representative inclination of the minor cutting edge used for high feed back-turning is greater than a representative inclination of the major cutting edge used for front-turning with respect to a virtual reference plane perpendicular to the vertical direction.Type: ApplicationFiled: June 11, 2021Publication date: December 15, 2022Applicant: TAEGUTEC LTD.Inventor: CHANG WON JEONG
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Publication number: 20220371101Abstract: Embodiments of a cutting insert are provided. The cutting insert includes an upper surface, a lower surface, a plurality of side surfaces extending between the upper surface and the lower surface, an insert hole extending through the upper surface and the lower surface, and a corner portion provided with a cutting edge. At least one of the upper surface and the lower surface has a plurality of recesses extending between the insert hole and the corner portion. The plurality of recesses includes a first recess into which one portion of the mounting portion is inserted when the cutting insert is supported by the mounting portion, and a second recess into which another portion of the mounting portion is inserted when the cutting insert is supported by the mounting portion. The second recess has a side wall spaced apart from another portion of the mounting portion.Type: ApplicationFiled: May 21, 2021Publication date: November 24, 2022Applicant: TAEGUTEC LTD.Inventors: CHANG HEE CHOI, CHANG WON JEONG
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Patent number: 11491560Abstract: 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.Type: GrantFiled: July 13, 2021Date of Patent: November 8, 2022Assignee: TaeguTec Ltd.Inventors: Chang Gyu Park, Kang Sool Jung, Dong Hyun Kim
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Publication number: 20220250172Abstract: A cutting tool assembly includes a tool shank having a coupling opening, and an insert holder having an insert body to which an insert is coupled and detachably attached. A coupling protrusion protrudes from one surface of the insert body and is detachably coupled to the tool shank. Located on the coupling protrusion are a tapered contact portion which comes into contact with the coupling opening and provides a fixing force to fix the insert holder to the tool shank, and a contact surface at a rear end of the tapered contact portion which couples to a fastening member.Type: ApplicationFiled: February 10, 2021Publication date: August 11, 2022Applicant: TAEGUTEC LTD.Inventor: SANG YOUNG LEE
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Publication number: 20220055125Abstract: 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.Type: ApplicationFiled: November 4, 2021Publication date: February 24, 2022Applicant: TAEGUTEC LTD.Inventors: CHANG GYU PARK, SUNG KOOK CHEON
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Publication number: 20210138563Abstract: A cutting insert includes: an upper face including a virtual reference surface and an upper inclined surface extending to be inclined upward from the virtual reference surface; a lower face disposed below the upper face and including a lower inclined surface extending to be inclined with respect to the virtual reference surface; and a plurality of side faces connecting the upper face and the lower face. An insert bore is formed to penetrate through the upper face and the lower face along a central axis perpendicular to the virtual reference surface. A major cutting edge is formed at an edge at which the upper inclined surface meets any one side face among the plurality of side faces. A first angle between the side face, on which the major cutting edge is formed, and the upper inclined surface is greater than a second angle between the central axis and the lower inclined surface.Type: ApplicationFiled: November 13, 2019Publication date: May 13, 2021Applicant: TAEGUTEC LTD.Inventors: Chang Gyu Park, Su Jin Ryu, Kyu Yeol Baek
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Patent number: D910096Type: GrantFiled: June 19, 2019Date of Patent: February 9, 2021Assignee: TAEGUTEC LTD.Inventors: Chang Gyu Park, Sung Kook Cheon
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Patent number: D910097Type: GrantFiled: June 19, 2019Date of Patent: February 9, 2021Assignee: TAEGUTEC LTD.Inventors: Chang Gyu Park, Sung Kook Cheon
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Patent number: D921075Type: GrantFiled: March 29, 2019Date of Patent: June 1, 2021Assignee: TaeguTec Ltd.Inventors: Chang Gyu Park, Su-Jin Ryu
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Patent number: D921076Type: GrantFiled: March 29, 2019Date of Patent: June 1, 2021Assignee: TaeguTec Ltd.Inventors: Chang Gyu Park, Kang Sool Jung, Sang Won Kim
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Patent number: D922459Type: GrantFiled: April 25, 2018Date of Patent: June 15, 2021Assignee: TaeguTec Ltd.Inventors: Chang-Hee Choi, Su-Jin Ryu
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Patent number: D922460Type: GrantFiled: June 19, 2019Date of Patent: June 15, 2021Assignee: TAEGUTEC LTD.Inventors: Chang Gyu Park, Su Jin Ryu
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Patent number: D1020824Type: GrantFiled: January 24, 2022Date of Patent: April 2, 2024Assignee: TaeguTec Ltd.Inventors: Chang Gyu Park, Su Jin Ryu, Jae Seong Kim