Patents Assigned to Sumitomo Electric Hardmetal Corp.
  • Cutting insert and method for manufacturing cutting insert
    Patent number: 11554427
    Abstract: A cutting insert according to one embodiment includes: a rake face; a flank face continuous to the rake face; and a cutting edge constituted of a ridgeline between the rake face and the flank face. A coolant flow path is provided inside the cutting insert. One end portion of the coolant flow path opens in the flank face to form a coolant ejection hole. The flank face is provided with a coolant guide groove extending from the coolant ejection hole toward the cutting edge with a base end portion of the coolant guide groove being connected to the coolant ejection hole and with a front end portion of the coolant guide groove being disposed at a position close to the cutting edge relative to the base end portion.
    Type: Grant
    Filed: May 18, 2018
    Date of Patent: January 17, 2023
    Assignee: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Tsutomu Hirano, Satoru Kukino
  • Cubic boron nitride sintered material
    Patent number: 11542203
    Abstract: A cubic boron nitride sintered material includes: 20 to 80 volume % of cBN grains; and 20 to 80 volume % of a binder phase, wherein the binder phase includes first binder grains and second binder grains, in each of the first binder grains, a ratio of the number of atoms of the first metal element to a total of the number of atoms of the titanium and the number of atoms of the first metal element is more than or equal to 0.01% and less than 10%, in each of the second binder grains, this ratio is more than or equal to 10% and less than or equal to 80%, and in an X-ray diffraction spectrum of the cubic boron nitride sintered material, one or both of conditions 1 and 2 are satisfied.
    Type: Grant
    Filed: July 17, 2020
    Date of Patent: January 3, 2023
    Assignees: Sumitomo Electric Industries, Ltd., SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Mayu Amemiya, Akito Ishii, Katsumi Okamura, Hironari Moroguchi, Satoru Kukino
  • Method for manufacturing diamond single crystal cutting tool using laser pulses
    Patent number: 11541464
    Abstract: A method for manufacturing a cutting tool according to one embodiment is a method for manufacturing a cutting tool, the cutting tool including a base material and a diamond single crystal material fixed to the base material, the diamond single crystal material having a rake face, a flank face continuous with the rake face, and a cutting edge formed by a ridgeline serving as a boundary between the rake face and the flank face. The method for manufacturing a cutting tool according to one form of the present disclosure includes a flank face irradiation step of applying a laser to the diamond single crystal material along the cutting edge from a side of the flank face. The laser has a pulse width of 1×10?12 seconds or less and a peak output of less than 1 W in the flank face irradiation step.
    Type: Grant
    Filed: January 10, 2018
    Date of Patent: January 3, 2023
    Assignee: Sumitomo Electric Hardmetal Corp.
    Inventor: Gaku Harada
  • Surface-coated cutting tool
    Patent number: 11534836
    Abstract: A surface-coated cutting tool includes: a substrate including a rake face and a flank face; a first coating film that coats the rake face; and a second coating film that coats the flank face, wherein the first coating film includes a first composite nitride layer at a region d1 on the rake face, the second coating film includes a second composite nitride layer at a region d2 on the flank face, the first composite nitride layer includes Ti1-x1-y1Alx1Tay1C?1N?1, the second composite nitride layer includes Ti1-x2-y2Alx2Tay2C?2N?2.
    Type: Grant
    Filed: January 30, 2019
    Date of Patent: December 27, 2022
    Assignee: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Kouhei Yoshimura, Haruyo Fukui, Makoto Setoyama, Keizo Tanaka
  • Cutting tool
    Patent number: 11534837
    Abstract: A cutting tool includes a substrate and a coated film arranged on the substrate. The coated film includes a first layer. The first layer includes a plurality of crystal grains. The crystal grains are composed of AlxTi1-xCyN1-y, wherein x is more than 0.65 and less than 0.95, and y is not less than 0 and less than 0.1. In a first region, the crystal grains have an average aspect ratio of not more than 3.0. In a second region, the crystal grains have an average aspect ratio of more than 3.0 and not more than 10.0. The crystal grains include crystal grains having a cubic crystal structure. The first layer has a ratio of an area occupied by the crystal grains having a cubic crystal structure of not less than 90%. The first layer has a thickness of not less than 2 ?m and not more than 20 ?m.
    Type: Grant
    Filed: June 14, 2021
    Date of Patent: December 27, 2022
    Assignees: SUMITOMO ELECTRIC HARDMETAL CORP., SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Fumiyoshi Kobayashi, Anongsack Paseuth, Yasuki Kido, Kosuke Tominaga
  • CUTTING TOOL
    Publication number: 20220402045
    Abstract: A cutting tool includes: a substrate; and a coating film disposed on the substrate, wherein the coating film includes an ?-Al2O3 layer, the ?-Al2O3 layer includes a plurality of ?-Al2O3 crystal grains, and has a TC (006) of more than 5 in texture coefficient TC (hkl), and a plastic deformation amount hp of the ?-Al2O3 layer at 800° C. is 0 nm or more and 100 nm or less.
    Type: Application
    Filed: June 11, 2020
    Publication date: December 22, 2022
    Applicant: Sumitomo Electric Hardmetal Corp.
    Inventors: Yasuki KIDO, Susumu OKUNO, Masahito HIKIJI
  • CUTTING TOOL
    Publication number: 20220402043
    Abstract: A cutting tool includes: a substrate; and a coating film disposed on the substrate, wherein the coating film includes an ?-Al2O3 layer, the ?-Al2O3 layer includes a plurality of ?-Al2O3 crystal grains, and has a TC(006) of more than 5 in texture coefficient TC(hkl), and a hardness H1 of the ?-Al2O3 layer at a room temperature and a hardness H2 of the ?-Al2O3 layer at 800° C. represent a relation of the following expression A-1: 0<{(H1?H2)/H1}×100<60 ??Expression A-1.
    Type: Application
    Filed: June 11, 2020
    Publication date: December 22, 2022
    Applicant: Sumitomo Electric Hardmetal Corp.
    Inventors: Yasuki KIDO, Susumu OKUNO, Masahito HIKIJI
  • CUTTING TOOL
    Publication number: 20220402044
    Abstract: A cutting tool includes: a substrate; and a coating film disposed on the substrate, wherein the coating film includes an ?-Al2O3 layer, the ?-Al2O3 layer includes a plurality of ?-Al2O3 crystal grains, and has a TC(006) of more than 5 in texture coefficient TC(hkl), and an elastic modulus E1 of the ?-Al2O3 layer at a room temperature and an elastic modulus E2 of the ?-Al2O3 layer at 800° C. represent a relation of the following expression B-1: 0<{(E1?E2)/E1}×100<10??Expression B-1.
    Type: Application
    Filed: June 11, 2020
    Publication date: December 22, 2022
    Applicant: Sumitomo Electric Hardmetal Corp.
    Inventors: Yasuki KIDO, Susumu OKUNO, Masahito HIKIJI
  • Cemented carbide and cutting tool containing the same as substrate
    Patent number: 11530467
    Abstract: Cemented carbide contains a first hard phase and a binder phase. The first hard phase is composed of tungsten carbide particles. The binder phase is composed of cobalt, nickel, iron, and copper as constituent elements. An average content of each of the constituent elements is not lower than 10 atomic % and not higher than 30 atomic %. Cemented carbide contains no second hard phase, or a content of the second hard phase is equal to or lower than 2 mass % of a total amount of cemented carbide. The second hard phase is composed of a compound containing at least one type of a metal element selected from the group consisting of a group-IV element, a group-V element, and a group-VI element in a periodic table except for tungsten and at least one type of an element selected from the group consisting of carbon, nitrogen, and oxygen.
    Type: Grant
    Filed: December 23, 2020
    Date of Patent: December 20, 2022
    Assignee: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Takato Yamanishi, Shinya Imamura
  • CUTTING TOOL
    Publication number: 20220395909
    Abstract: A cutting tool includes a substrate and a coated film arranged on the substrate. The coated film includes a first layer. The first layer includes a plurality of crystal grains. The crystal grains are composed of AlxTi1?xCyN1?y, wherein x is more than 0.65 and less than 0.95, and y is not less than 0 and less than 0.1. In a first region, the crystal grains have an average aspect ratio of not more than 3.0. In a second region, the crystal grains have an average aspect ratio of more than 3.0 and not more than 10.0. The crystal grains include crystal grains having a cubic crystal structure. The first layer has a ratio of an area occupied by the crystal grains having a cubic crystal structure of not less than 90%. The first layer has a thickness of not less than 2 m and not more than 20 m.
    Type: Application
    Filed: June 14, 2021
    Publication date: December 15, 2022
    Applicants: Sumitomo Electric Hardmetal Corp., Sumitomo Electric Industries, Ltd.
    Inventors: Fumiyoshi KOBAYASHI, Anongsack PASEUTH, Yasuki KIDO, Kosuke TOMINAGA
  • Cutting tool
    Patent number: 11524339
    Abstract: A cutting tool incudes a substrate and a coating that coats a surface of the substrate, the coating including a multilayer structure layer composed of at least one layer A and at least one layer B alternately deposited from a side closer to the substrate toward a side closer to a surface, the layer A having an average composition of AlxCr(1-x)N, the layer B being composed of TiyAlzSi(1-y-z)N, the layer A being composed of a domain region and a matrix region, the domain region having a composition ratio of Cr larger than that of Cr of the matrix region, wherein x has a range of 0.5?x?0.8, y has a range of 0.5?y<0.71, z has a range of 0.29?z<0.5, and 1?y?z has a range of 0<1?y?z?0.1.
    Type: Grant
    Filed: June 26, 2019
    Date of Patent: December 13, 2022
    Assignee: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Keizo Tanaka, Shinya Imamura, Haruyo Fukui
  • Cubic boron nitride sintered material
    Patent number: 11518718
    Abstract: A cubic boron nitride sintered material includes: 20 t to 80 volume % of cBN grains; and 20 to 80 volume % of a binder phase, wherein the binder phase includes first binder grains and second binder grains, in each of the first binder grains, a ratio of the number of atoms of the first metal element to a total of the number of atoms of the titanium and the first metal element is more than or equal to 0.01% and less than 10%, in each of the second binder grains, the ratio is more than or equal to 10% and less than or equal to 80%, and an average grain size of the second binder grains is more than or equal to 0.2 ?m and less than or equal to 1 ?m.
    Type: Grant
    Filed: July 17, 2020
    Date of Patent: December 6, 2022
    Assignees: Sumitomo Electric Industries, Ltd., SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Mayu Amemiya, Katsumi Okamura, Akito Ishii, Satoru Kukino, Hironari Moroguchi
  • CUTTING TOOL
    Publication number: 20220379385
    Abstract: A cutting tool includes: a substrate; a hard layer provided on the substrate; and a titanium carbonitride layer provided on the hard layer, wherein a thickness of the titanium carbonitride layer is more than or equal to 2 ?m, a hardness of the titanium carbonitride layer at a room temperature is more than or equal to 35 GPa, and a Young's modulus of the titanium carbonitride layer at the room temperature is less than or equal to 650 GPa.
    Type: Application
    Filed: June 4, 2020
    Publication date: December 1, 2022
    Applicant: Sumitomo Electric Hardmetal Corp.
    Inventors: Yasuki KIDO, Susumu OKUNO, Fumiyoshi KOBAYASHI, Masahito HIKIJI
  • Cutting tools
    Patent number: 11511353
    Abstract: A cutting tool comprising a base material and a coating arranged on the base material; wherein: the coating comprises an ?-Al2O3 layer composed of a plurality of ?-Al2O3 particles; the average particle diameter a of the ?-Al2O3 particles in a first region of the ?-Al2O3 layer is 0.10 ?m or more and 0.30 ?m or less; the average particle diameter b of the ?-Al2O3 particles in a second region of the ?-Al2O3 layer is 0.30 ?m or more and 0.50 ?m or less; the average particle diameter c of the ?-Al2O3 particles in a third region of the ?-Al2O3 layer is 0.30 ?m or more and 0.50 ?m or less; and the ratio b/a is 1.5 or more and 5.0 or less.
    Type: Grant
    Filed: March 22, 2021
    Date of Patent: November 29, 2022
    Assignee: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Masahito Hikiji, Susumu Okuno, Takato Yamanishi
  • CUTTING TOOL
    Publication number: 20220371110
    Abstract: A cutting tool includes a body, a blade, and a position adjustment screw. The body surrounds an axial line. The blade includes a cutting edge portion and a shank portion. The position adjustment screw is in contact with the shank portion. The position adjustment screw includes a head portion in contact with the shank portion and a joint portion continuous to the head portion and joined to the body. The head portion includes a tip end surface in contact with the shank portion, a connection surface continuous to the joint portion, and an outer circumferential surface continuous to each of the tip end surface and the connection surface. When viewed in a direction perpendicular to the axial line, a part of the outer circumferential surface is exposed through the second hole and a remainder of the outer circumferential surface is covered with the body.
    Type: Application
    Filed: July 6, 2021
    Publication date: November 24, 2022
    Applicant: Sumitomo Electric Hardmetal Corp.
    Inventor: Hidekazu KOJO
  • Cutting tool
    Patent number: 11504780
    Abstract: The first cutting insert is attached to a first pocket. The second cutting insert is attached to a second pocket. The third cutting insert is attached to a third pocket. The first pocket has a first seat surface, a second seat surface, a third seat surface, and a first swarf discharging groove. The second pocket has a fourth seat surface, a fifth seat surface, a sixth seat surface, and a second swarf discharging groove. The third pocket has a seventh seat surface, an eighth seat surface, a ninth seat surface, and a third swarf discharging groove. In a cross section perpendicular to an axis, an angle formed between a straight line along the sixth seat surface and a tangent of the second swarf discharging groove at a boundary between the outer circumferential surface and the second swarf discharging groove is more than 90°.
    Type: Grant
    Filed: September 4, 2019
    Date of Patent: November 22, 2022
    Assignee: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Tangwei Zhao, Tomoyuki Fukuyama
  • Cutting insert and cutting tool
    Patent number: 11484949
    Abstract: A cutting insert includes a cylindrical body portion, a cutting portion, a first fitting portion, a second fitting portion, and a third fitting portion. The cutting portion includes a rake face and a flank face. A ridgeline between the rake face and the flank face constitutes a cutting edge. When viewed in the axial direction, the cutting portion is provided opposite to the third fitting portion relative to the insertion hole. When viewed in the axial direction, a straight line extending through an outer circumferential end of the cutting edge and a center of the insertion hole overlaps with the third fitting portion and is located between the first fitting portion and the second fitting portion. A third central angle is smaller than a first central angle and is smaller than a second central angle.
    Type: Grant
    Filed: October 10, 2018
    Date of Patent: November 1, 2022
    Assignees: SUMITOMO ELECTRIC HARDMETAL CORP., HARTMETALL-WERKZEUGFABRIK PAUL HORN GMBH
    Inventors: Yosuke Shimamoto, Yasuyuki Kanada, Matthias Luik
  • Cutting tool
    Patent number: D968489
    Type: Grant
    Filed: February 3, 2022
    Date of Patent: November 1, 2022
    Assignee: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventor: Christoph Zeiner
  • Cutting tool
    Patent number: D974425
    Type: Grant
    Filed: August 24, 2020
    Date of Patent: January 3, 2023
    Assignee: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Christoph Zeiner, Makoto Abe, Andreas Widmann
  • Cutting tool
    Patent number: D974426
    Type: Grant
    Filed: August 24, 2020
    Date of Patent: January 3, 2023
    Assignee: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Christoph Zeiner, Makoto Abe, Andreas Widmann