Patents Assigned to Sumitomo Electric Hardmetal Corp.
  • 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
  • ROTARY CUTTING TOOL CUTTING INSERT AND ROTARY CUTTING TOOL
    Publication number: 20220339718
    Abstract: A straight line along the second line segment and a straight line along the fourth line segment form an acute angle. The straight line along the second line segment and the straight line along the third line segment form an obtuse angle. The straight line along the first line segment and the straight line along the fourth line segment form an obtuse angle. Each of the third curved portion and the fourth curved portion is larger in radius of curvature than the first curved portion and larger in radius of curvature than the second curved portion. In a direction perpendicular to the bottom surface, a distance between the top surface and the bottom surface is equal to a distance between the cutting edge and the bottom surface, or is shorter than the distance between the cutting edge and the bottom surface.
    Type: Application
    Filed: September 2, 2020
    Publication date: October 27, 2022
    Applicant: Sumitomo Electric Hardmetal Corp.
    Inventors: Kouki MATSUBARA, Sachie GOTO, Kohei ITO, Toya NONEN
  • CUTTING TOOL
    Publication number: 20220331880
    Abstract: Provided is a cutting tool including a base material and a coating layer provided on the base material, the coating layer including a titanium carbonitride layer provided on the base material, an intermediate layer provided on the titanium carbonitride layer in contact therewith, and an alumina layer provided on the intermediate layer in contact therewith, the intermediate layer being composed of a compound made of titanium, carbon, oxygen, and nitrogen, the intermediate layer having a thickness of more than 1 ?m, when PC1 atomic % represents an atomic ratio of the carbon in an interface between the intermediate layer and the alumina layer, and PC2 atomic % represents an atomic ratio of the carbon at a point A away from the interface by 1 ?m on a side of the intermediate layer, a ratio PC1/PC2 of the PC1 to the PC2 being more than or equal to 1.03.
    Type: Application
    Filed: April 10, 2020
    Publication date: October 20, 2022
    Applicant: Sumitomo Electric Hardmetal Corp.
    Inventors: Susumu OKUNO, Yasuki KIDO, Fumiyoshi KOBAYASHI, Anongsack PASEUTH
  • Cutting tools
    Patent number: 11471951
    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 0.10 ?m or more and 0.30 ?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: October 18, 2022
    Assignee: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Masahito Hikiji, Susumu Okuno, Takato Yamanishi
  • CUTTING TOOL
    Publication number: 20220305565
    Abstract: Provided is a cutting tool including a base material and a coating layer provided on the base material, the coating layer including a titanium carbonitride layer provided on the base material, an intermediate layer provided on the titanium carbonitride layer in contact therewith, and an alumina layer provided on the intermediate layer in contact therewith, the intermediate layer being composed of a compound made of titanium, carbon, oxygen, and nitrogen, the intermediate layer having a thickness of more than 1 ?m, when PO1 atomic % represents an atomic ratio of the oxygen in an interface between the intermediate layer and the alumina layer, and PO2 atomic % represents an atomic ratio of the oxygen at a point A away from the interface by 1 ?m on a side of the intermediate layer, a ratio PO1/PO2 of the PO1 to the PO2 being more than or equal to 1.03.
    Type: Application
    Filed: April 10, 2020
    Publication date: September 29, 2022
    Applicant: Sumitomo Electric Hardmetal Corp.
    Inventors: Susumu OKUNO, Yasuki KIDO, Fumiyoshi KOBAYASHI, Anongsack PASEUTH
  • CUTTING TOOLS
    Publication number: 20220297199
    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 0.10 ?m or more and 0.30 ?m or less; and the ratio b/a is 1.5 or more and 5.0 or less.
    Type: Application
    Filed: March 22, 2021
    Publication date: September 22, 2022
    Applicant: Sumitomo Electric Hardmetal Corp.
    Inventors: Masahito HIKIJI, Susumu OKUNO, Takato YAMANISHI
  • CUTTING TOOLS
    Publication number: 20220297200
    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: Application
    Filed: March 22, 2021
    Publication date: September 22, 2022
    Applicant: Sumitomo Electric Hardmetal Corp.
    Inventors: Masahito HIKIJI, Susumu OKUNO, Takato YAMANISHI
  • Cutting tool
    Patent number: D964440
    Type: Grant
    Filed: November 24, 2020
    Date of Patent: September 20, 2022
    Assignee: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Takashi Harada, Naoki Watanobe, Satoru Kukino, Taisuke Higashi, Rintaro Sugimoto
  • Cutting tool
    Patent number: D965654
    Type: Grant
    Filed: February 17, 2022
    Date of Patent: October 4, 2022
    Assignee: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventor: Christoph Zeiner
  • Cutting edge for drilling tool
    Patent number: D966359
    Type: Grant
    Filed: September 25, 2019
    Date of Patent: October 11, 2022
    Assignee: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Akihiko Ueda, Yoshinori Tanigawa, Machiko Abe
  • Cutting tool
    Patent number: D966360
    Type: Grant
    Filed: February 9, 2022
    Date of Patent: October 11, 2022
    Assignee: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventor: Christoph Zeiner
  • 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