Patents Assigned to Sumitomo Electric Hardmetal Corp.
  • CUTTING INSERT AND METHOD OF MANUFACTURING CUTTING INSERT
    Publication number: 20230321732
    Abstract: A cutting insert includes a substrate and a cutting-edge insert. The substrate has, in a thickness direction of the substrate, a bottom surface, and a top surface opposite to the bottom surface. The top surface has a polygonal shape composed of a plurality of sides in a plan view as seen along the thickness direction. The top surface is provided with a projection projecting to a side opposite to the bottom surface along the thickness direction. The projection has a through-hole passing through the substrate along the thickness direction. The projection has a side surface contiguous to the top surface. The side surface is composed of a curved line protruding to a side opposite to the through-hole in the plan view as seen along the thickness direction.
    Type: Application
    Filed: June 17, 2020
    Publication date: October 12, 2023
    Applicant: Sumitomo Electric Hardmetal Corp.
    Inventors: Gaku HARADA, Satoru HIRAO, Ikurou ITOHARA
  • Cubic boron nitride sintered material, tool comprising cubic boron nitride sintered material and method for manufacturing cubic boron nitride sintered material
    Patent number: 11773030
    Abstract: A cBN sintered material comprising cBN particles and a binder phase, in which the binder phase contains AlN and AlB2, a content proportion of cBN particles is 70 to 97 vol %, cBN sintered material has a volume resistivity up to 5×10?3 ?cm, a rate of a peak intensity derived from Al with respect to a peak intensity derived from cBN particles is less than 1.0%, cBN particles include fine particles and coarse particles, coarse particles optionally include ultra-coarse particles, with respect to the entire cBN particles, a content proportion ? of fine particles is from 10 vol %, a content proportion ? of coarse particles is from 30 vol %, a content proportion ? of ultra-coarse particles is 25 vol % or less, and a total of the content proportion ? of fine particles and the content proportion ? of coarse particles is 50 to 100 vol %.
    Type: Grant
    Filed: October 26, 2021
    Date of Patent: October 3, 2023
    Assignee: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Keita Miyamoto, Satoru Kukino, Akihiko Ueda, Michiko Matsukawa
  • CUTTING TOOL AND CUTTING PROCESSING DEVICE
    Publication number: 20230302544
    Abstract: A cutting tool is rotatable about an axis line, and includes a main body portion, a cutting insert, and a plurality of anti-vibration members. The main body portion has an inner circumferential surface and an outer circumferential surface opposite to the inner circumferential surface. The cutting insert is attached to at least one of the inner circumferential surface and the outer circumferential surface. Each of the plurality of anti-vibration members is provided at the main body portion. Each of the plurality of anti-vibration members includes a weight member composed of a material having a specific gravity larger than a specific gravity of a material of the main body portion.
    Type: Application
    Filed: July 8, 2021
    Publication date: September 28, 2023
    Applicants: Sumitomo Electric Hardmetal Corp., Komatsu NTC Ltd., Big Daishowa Seiki Co., Ltd.
    Inventors: Hirochika FUKUDA, Takuya NISHIMURA, Masanori KAKUI, Manabu TSUJINO, Tatsuya OGATA
  • CUBIC BORON NITRIDE SINTERED MATERIAL
    Publication number: 20230286869
    Abstract: A cubic boron nitride sintered material comprising cubic boron nitride grains, a binder phase, and a void, in which a percentage of the cubic boron nitride grains based on the total of the cubic boron nitride grains and the binder phase is 40 vol % to 70 vol %, a percentage of the binder phase based on the total of the cubic boron nitride grains and the binder phase is 30 vol % to 60 vol %, the binder phase includes 10 vol % to 100 vol % of aluminum oxide grains, an average grain size of the aluminum oxide grains is 50 to 250 nm, the cubic boron nitride sintered material comprises 0.001 vol % to 0.100 vol % of one or more first voids, and at least one portion of each of the first voids is in contact with the aluminum oxide grains.
    Type: Application
    Filed: March 8, 2022
    Publication date: September 14, 2023
    Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Kento YAMADA, Machiko ABE, Hironari MOROGUCHI, Akihiko UEDA, Satoru KUKINO
  • Cubic boron nitride sintered material and cutting tool including same
    Patent number: 11752559
    Abstract: The cubic boron nitride sintered material is a cubic boron nitride sintered material comprising: cubic boron nitride particles in an amount of 70 vol % or more and less than 100 vol %, and a bonding material, wherein the bonding material includes an aluminum compound, and includes cobalt as a constituent element; the cubic boron nitride sintered material has a first region in which a space between adjacent cubic boron nitride particles is 0.1 nm or more and 10 nm or less; and when the first region is analyzed by using an energy dispersive X-ray analyzer equipped with a transmission electron microscope, the atom % of aluminum in the first region is 0.1 or more.
    Type: Grant
    Filed: July 30, 2021
    Date of Patent: September 12, 2023
    Assignees: Sumitomo Electric Industries, Ltd., SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Yuichiro Watanabe, Katsumi Okamura, Akito Ishii, Yoshiki Asakawa, Akihiko Ueda, Satoru Kukino, Hisaya Hama
  • CUTTING TOOL
    Publication number: 20230265565
    Abstract: A cutting tool includes a substrate and a coating film that is disposed on the substrate, wherein the coating film includes a first layer composed of metal tungsten and hexagonal ditungsten carbide, and the first layer has an elastic deformation rate of 43.0 or more and 58.0 or less.
    Type: Application
    Filed: September 8, 2021
    Publication date: August 24, 2023
    Applicant: Sumitomo Electric Hardmetal Corp.
    Inventors: Sachiko KOIKE, Haruyo FUKUI, Keiichi TSUDA
  • DRILL
    Publication number: 20230226619
    Abstract: A drill has a first main body portion and a second main body portion. The first main body includes a chip discharging surface, a flank face, and an outer peripheral surface. A ridgeline between the chip discharging surface and the flank face constitutes a cutting edge. The chip discharging surface has an auxiliary flute surface provided in a form of a helix around a center axis, the auxiliary flute surface being contiguous to the cutting edge, the auxiliary flute surface being recessed in a direction opposite to a rotation direction of the drill. An auxiliary cutting edge portion has a first end portion and a second end portion. When viewed in a direction along the center axis, a value obtained by dividing the maximum value of the diameter of the second main body portion by the diameter of the first main body portion is 1.5 or more.
    Type: Application
    Filed: June 3, 2020
    Publication date: July 20, 2023
    Applicants: Sumitomo Electric Hardmetal Corp., AISIN Corporation
    Inventors: Koji TAKAHASHI, Masaaki JINDAI, Akihiro KIHARA, Yusuke MATSUNO
  • COOLANT SUPPLY MECHANISM
    Publication number: 20230219143
    Abstract: A coolant supply mechanism is attachable to a cutting insert. The cutting insert has a first bottom surface, a first upper surface, and a first side surface. The first upper surface includes a corner portion that is located at a corner of the first upper surface when viewed in a plan view and that is contiguous to the first side surface so as to form a cutting edge, and a center portion located adjacent to the corner portion on a side opposite to the cutting edge when viewed in a plan view. The first upper surface is depressed toward the first bottom surface side at the center portion.
    Type: Application
    Filed: June 17, 2020
    Publication date: July 13, 2023
    Applicant: Sumitomo Electric Hardmetal Corp.
    Inventors: Gaku HARADA, Satoru HIRAO, Akio FUJIMURA
  • CUTTING TOOL
    Publication number: 20230201930
    Abstract: A cutting tool including a base material and a hard layer provided on the base material, in which the hard layer is composed of a compound represented by TiaAlbBcN, an atomic ratio a is 0.25 or more and less than 0.55, an atomic ratio b of is 0.45 or more and less than 0.75, an atomic ratio c of is more than 0 and 0.1 or less, a sum of the atomic ratio a, the atomic ratio b and the atomic ratio c is 1, a ratio I(200)/I(002) of an intensity I(200) of an X-ray diffraction peak of a (200) plane to an intensity I(002) of an X-ray diffraction peak of a (002) plane in the hard layer is 2 to 10, and a full width at half maximum of the X-ray diffraction peak of the (002) plane is 2 degrees to 8 degrees.
    Type: Application
    Filed: February 17, 2021
    Publication date: June 29, 2023
    Applicant: Sumitomo Electric Hardmetal Corp.
    Inventors: Yuta SUZUKI, Kosuke FUKAE
  • CUTTING TOOL
    Publication number: 20230193451
    Abstract: A cutting tool comprising a substrate and a coating film disposed on the substrate, wherein the coating film comprises a first layer; the first layer has a thickness of 0.2 ?m or more and 9 ?m or less; the first layer is composed of Ti(1-x-y)AlxMyN, wherein M is at least one element such as zirconium; in the first layer, x and y change along the thickness direction of the first layer; a maximum value of x, xmax, is 0.20 or more and 0.70 or less; a minimum value of x, xmin, is 0 or more and 0.6 or less; xmax and xmin satisfy 0.01?xmax?xmin?0.7; a maximum value of y, ymax, is 0.01 or more and 0.20 or less; a minimum value of y, ymin, is 0 or more and 0.19 or less; and ymax and ymin satisfy 0.01?ymax?ymin?0.2.
    Type: Application
    Filed: June 30, 2021
    Publication date: June 22, 2023
    Applicant: Sumitomo Electric Hardmetal Corp.
    Inventors: Hironari MOROGUCHI, Yuki TSUTSUMIUCHI, Satoru KUKINO
  • Composite sintered material
    Patent number: 11680022
    Abstract: A composite sintered material includes a plurality of diamond grains, a plurality of cubic boron nitride grains, and a remainder of a binder phase, wherein the binder phase includes cobalt, a content of the cubic boron nitride grains in the composite sintered material is more than or equal to 3 volume % and less than or equal to 40 volume %, and an average length of line segments extending across continuous cubic boron nitride grains in appropriately specified straight lines extending through the composite sintered material is less than or equal to a length three times as large as an average grain size of the cubic boron nitride grains.
    Type: Grant
    Filed: June 6, 2018
    Date of Patent: June 20, 2023
    Assignees: Sumitomo Electric Industries, Ltd., Sumitomo Electric Hardmetal Corp.
    Inventors: Naoki Watanobe, Takashi Harada, Katsumi Okamura, Akito Ishii, Satoru Kukino, Taisuke Higashi
  • DRILL
    Publication number: 20230173593
    Abstract: The outer peripheral surface is provided with a first margin contiguous to each of the cutting edge and the flank face, and a second margin that is located on the rear side with respect to the first margin in a rotation direction and that is separated from each of the flank face and the thinning face. An outer peripheral portion of the first margin and an outer peripheral portion of the second margin have respective back tapers having the same angle. In a direction parallel to the axial line, a distance between a front end of the first margin and a front end of the second margin is more than or equal to 3 mm and less than or equal to 5 mm.
    Type: Application
    Filed: March 8, 2021
    Publication date: June 8, 2023
    Applicants: Sumitomo Electric Hardmetal Corp., Toyota Jidosha Kabushiki Kaisha
    Inventors: Masashi YAMADA, Naoyuki WAKATSUKI, Yasumasa SUNANO, Takayuki NATORI, Riku TADOKORO
  • Reamer
    Patent number: 11660691
    Abstract: A reamer is rotated about a central axis and has, in a direction along a central axis, a tool front end and a tool rear end that is an end opposite to the tool front end. The reamer includes a blade on a tool front end side. The blade has, on a circumferential surface, a chamfered cutting edge located on the tool front end side, a circumferential cutting edge contiguous to an end of the chamfered cutting edge on a tool rear end side, and a margin that is a surface contiguous to the circumferential cutting edge. The circumferential cutting edge includes a front end portion between a first position and a second position, the first position being an end on a chamfered cutting edge side, the second position having a distance of 1 mm from the first position in a direction of extension of the circumferential cutting edge.
    Type: Grant
    Filed: March 10, 2020
    Date of Patent: May 30, 2023
    Assignees: SUMITOMO ELECTRIC HARDMETAL CORP., Sumitomo Electric Tool Net, Inc.
    Inventors: Masashi Yamada, Masaaki Jindai, Jun Okamoto, Futoshi Takeshita, Kyosuke Kai, Katsutoshi Fukuda
  • RETAINING MEMBER AND CUTTING TOOL
    Publication number: 20230158579
    Abstract: The boundary flow path is constituted of a pair of boundary wall surfaces facing each other in a first cross section intersecting each of the first flow path, the boundary flow path, and the second flow path. An inclination of a tangent to at least one of the pair of boundary wall surfaces is continuously changed. In a second cross section perpendicular to a direction in which coolant flows, a lateral width of the first flow path is larger than a longitudinal width of the first flow path and a lateral width of the second flow path is larger than a longitudinal width of the second flow path when a longitudinal direction represents a direction in which the pair of boundary wall surfaces face each other and a lateral direction represents a direction perpendicular to the longitudinal direction.
    Type: Application
    Filed: March 2, 2021
    Publication date: May 25, 2023
    Applicant: Sumitomo Electric Hardmetal Corp.
    Inventors: Yifan WEN, Yosuke SHIMAMOTO, Naoya TSUDA, Yasuhiko OKITA, Taiga SUEYOSHI, Junya OKIDA
  • Cutting tool
    Patent number: D991993
    Type: Grant
    Filed: December 18, 2020
    Date of Patent: July 11, 2023
    Assignee: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Satoru Kukino, Mayuka Segawa, Takashi Harada
  • Cutting tool
    Patent number: D993291
    Type: Grant
    Filed: August 22, 2022
    Date of Patent: July 25, 2023
    Assignee: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventor: Hirochika Fukuda
  • Cutting tool
    Patent number: D1000492
    Type: Grant
    Filed: July 6, 2022
    Date of Patent: October 3, 2023
    Assignee: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Satoru Kukino, Gaku Harada, Takashi Harada, Naoki Watanobe, Soichiro Kakinoki, Keita Miyamoto, Hironari Moroguchi
  • Cutting tool
    Patent number: D1001167
    Type: Grant
    Filed: July 29, 2021
    Date of Patent: October 10, 2023
    Assignee: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Takashi Harada, Satoru Kukino, Taisuke Higashi, Naoki Watanobe, Mayuka Segawa
  • Cutting tool
    Patent number: D1001168
    Type: Grant
    Filed: July 7, 2022
    Date of Patent: October 10, 2023
    Assignee: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Satoru Kukino, Gaku Harada, Takashi Harada, Naoki Watanobe, Soichiro Kakinoki, Keita Miyamoto, Hironari Moroguchi
  • Cutting tool
    Patent number: D1001169
    Type: Grant
    Filed: August 16, 2022
    Date of Patent: October 10, 2023
    Assignee: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Takashi Harada, Naoki Watanobe, Satoru Kukino, Taisuke Higashi, Rintaro Sugimoto