Patents Assigned to Sumitomo Electric Hardmetal Corp.
  • END MILL
    Publication number: 20210031282
    Abstract: An end mill has a shank and a cutting edge portion. The shank has a coolant supply path. The cutting edge portion covers an outlet of the coolant supply path and is provided on the shank. The cutting edge portion is made of a porous body.
    Type: Application
    Filed: March 22, 2018
    Publication date: February 4, 2021
    Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Yutaka KOBAYASHI, Satoru KUKINO
  • Method of correcting track of cutting edge, recording medium, and program
    Patent number: 10906151
    Abstract: A method of correcting a track of a cutting edge is provided. With movement of the cutting edge, a point on the cutting edge in contact with the rotation symmetry plane is moved along the cutting edge from a first end portion of the cutting edge to a second end portion of the cutting edge opposite to the first end portion. The correction method includes measuring, by a measurement unit, a shape of the cut and machined rotation symmetry plane, calculating, by an operation unit, an error of the measured shape of the rotation symmetry plane from a target shape of the rotation symmetry plane in a direction of the axial line of rotation, and correcting, by the operation unit, a component in the direction of the axial line of rotation of a track of a point of cutting based on the error.
    Type: Grant
    Filed: April 27, 2017
    Date of Patent: February 2, 2021
    Assignees: Sumitomo Electric Hardmetal Corp., Sumitomo Electric Industries, Ltd., Sumitomo Electric Tool Net, Inc.
    Inventors: Yasuyuki Kanada, Kunishige Tanaka, Shota Takemura, Soichiro Okumura, Jun Okamoto, Futoshi Takeshita
  • Dresser
    Patent number: 10894305
    Abstract: A dresser includes: a mount component; and a cutting edge component inserted in the mount component at a base end portion side, wherein the portion of the cutting edge component inserted in the mount component has one or more portions in each of which an area of a cross section is increased from the front end portion side toward the base end portion side in the insertion direction, and a ratio L1/M1 of a length L1 and a maximum value M1 is more than or equal to 2.1, where L1 represents a length of the portion of the cutting edge component inserted in the mount component and M1 represents a maximum value of a diameter of a circle having an area equal to the area of the cross section of the portion of the cutting edge component inserted in the mount component.
    Type: Grant
    Filed: March 27, 2019
    Date of Patent: January 19, 2021
    Assignee: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Takeshi Sato, Tadashi Yamaguchi, Shinichiro Yurugi
  • CUTTING TOOL
    Publication number: 20210008634
    Abstract: A cutting tool includes 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 AlyTi(1-y)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 and y has a range of 0.5?y?0.7.
    Type: Application
    Filed: June 26, 2019
    Publication date: January 14, 2021
    Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Keizo TANAKA, Shinya IMAMURA, Haruyo FUKUI
  • CUTTING TOOL
    Publication number: 20210008636
    Abstract: A cutting tool including a rake face, a flank face, and a cutting edge portion, comprising a substrate and an AlTiN layer, the AlTiN layer including cubic AlxTi1-xN crystal grains, Al having an atomic ratio x of 0.7 or more and less than 0.95, the AlTiN layer including a central portion, the central portion at the rake face being occupied in area by (111) oriented AlxTi1-xN crystal grains at a ratio of 50% or more and less than 80%, the central portion at the cutting edge portion being occupied in area by (111) oriented AlxTi1-xN crystal grains at a ratio of 80% or more.
    Type: Application
    Filed: February 27, 2020
    Publication date: January 14, 2021
    Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Yasuki KIDO, Anongsack PASEUTH, Susumu OKUNO, Shinya IMAMURA
  • CUTTING TOOL
    Publication number: 20210008633
    Abstract: A cutting tool includes: a substrate including a rake face; and a coating film that coats the rake face, wherein the coating film includes an ?-Al2O3 layer disposed on the substrate, the ?-Al2O3 layer includes crystal grains of ?-Al2O3, an area ratio of crystal grains oriented in (001) among the crystal grains is 50% to 90% in the ?-Al2O3 layer at the rake face, and a film residual stress AA determined based on a crystal plane interval of a (001) plane of the ?-Al2O3 layer at the rake face is more than 0 MPa and less than or equal to 2000 MPa, and a film residual stress BA determined based on a crystal plane interval of a (110) plane of the ?-Al2O3 layer at the rake face is more than or equal to ?1000 MPa and less than 0 MPa.
    Type: Application
    Filed: July 5, 2019
    Publication date: January 14, 2021
    Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Susumu OKUNO, Shinya IMAMURA, Satoshi ONO, Anongsack PASEUTH
  • SURFACE-COATED CUTTING TOOL AND METHOD FOR MANUFACTURING SAME
    Publication number: 20210001410
    Abstract: A surface-coated cutting tool includes a base material and a coating film provided on a surface of the base material, wherein the coating film includes a first alternating layer provided on the base material and a second alternating layer provided on the first alternating layer, the first alternating layer includes A and B layers, the second alternating layer includes C and D layers, each of one or plurality of the A layers is composed of a nitride or carbonitride of AlaCrbM1(l-a-b), each of one or plurality of the B layers is composed of a nitride or carbonitride of AlcTidM2(l-c-d), each of one or plurality of the C layers is composed of a nitride or carbonitride of TieSifM3(l-e-f), and each of one or plurality of the D layers is composed of a nitride or carbonitride of TigSihM4(l-g-h).
    Type: Application
    Filed: March 8, 2019
    Publication date: January 7, 2021
    Applicant: Sumitomo Electric Hardmetal Corp.
    Inventors: Hiroki Takeshita, Makoto Setoyama, Haruyo Fukui
  • Cutting tool
    Patent number: 10882117
    Abstract: A cutting tool according to one aspect of the present disclosure includes a substrate and a diamond layer coating the substrate. A cutting tool according to one aspect of the present disclosure includes a rake face, a flank contiguous to the rake face, and a cutting edge configured by a ridge formed by the rake face and the flank. The rake face has a first rake face and a second rake face located between the first rake face and the flank. The second rake face and a surface of the substrate located on the side of the rake face form a negative angle. The second rake face is formed at the diamond layer.
    Type: Grant
    Filed: April 27, 2017
    Date of Patent: January 5, 2021
    Assignee: Sumitomo Electric Hardmetal Corp.
    Inventors: Yutaka Kobayashi, Katsuo Kazahaya
  • CUTTING TOOL AND METHOD FOR MANUFACTURING SAME
    Publication number: 20200406365
    Abstract: A cutting tool includes: a substrate; and a coating film formed on the substrate, wherein the coating film includes a first layer formed on the substrate, and a second layer formed on the first layer, the first layer is composed of a boride including zirconium as a component element, and the second layer is composed of a nitride including zirconium as a component element.
    Type: Application
    Filed: July 10, 2019
    Publication date: December 31, 2020
    Applicants: SUMITOMO ELECTRIC HARDMETAL CORP., SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Haruyo FUKUI, Makoto SETOYAMA, Keizo TANAKA
  • CUTTING TOOL
    Publication number: 20200406367
    Abstract: A cutting tool comprises a substrate and a coating that coats the substrate, the coating including an ?-alumina layer, the ?-alumina layer including crystal grains of ?-alumina, the ?-alumina layer including a lower portion and an upper portion, the upper portion being occupied in area at a ratio of 50% or more by crystal grains of ?-alumina having (006) plane with a normal thereto having a direction within ±15° with respect to a direction of a normal to the second interface, the lower portion being occupied in area at a ratio of 5% or more and less than 50% by crystal grains of ?-alumina having (012) plane, (104) plane, (110) plane, (113) plane, (116) plane, (300) plane, (214) plane and (006) plane each with a normal thereto having a direction within t 15° with respect to the direction of the normal to the second interface.
    Type: Application
    Filed: December 12, 2019
    Publication date: December 31, 2020
    Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Susumu OKUNO, Shinya IMAMURA, Yuki RIKISO, Yasuki KIDO, Fumiyoshi KOBAYASHI
  • CUTTING TOOL
    Publication number: 20200406366
    Abstract: A cutting tool includes: a substrate including a rake face; and a coating film that coats the rake face, wherein the coating film includes an ?-Al2O3 layer disposed on the substrate, the ?-Al2O3 layer includes crystal grains of ?-Al2O3, an area ratio of crystal grains oriented in (001) among the crystal grains is 50% to 90% in the ?-Al2O3 layer at the rake face, a film residual stress AA determined based on a crystal plane interval of a (001) plane of the ?-Al2O3 layer at the rake face is more than or equal to ?1000 MPa and less than 0 MPa, and a film residual stress BA determined based on a crystal plane interval of a (110) plane of the ?-Al2O3 layer at the rake face is more than or equal to ?1000 MPa and less than 0 MPa, and a relational expression of |AA|?|BA| is satisfied.
    Type: Application
    Filed: July 5, 2019
    Publication date: December 31, 2020
    Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Susumu OKUNO, Shinya IMAMURA, Satoshi ONO, Anongsack PASEUTH
  • CUTTING INSERT AND BORING TOOL
    Publication number: 20200406368
    Abstract: A cutting insert has a seating surface, an outer peripheral surface, a top surface, and an attachment hole. The cutting edge includes a curved cutting corner edge portion, a first cutting edge portion, and a second cutting edge portion. The top surface includes a first rake face contiguous to the first cutting edge portion, a second rake face contiguous to the second cutting edge portion, and a third rake face contiguous to the cutting corner edge portion and also contiguous to the first and second rake faces. The third rake face has a first region contiguous to the first rake face and a second region contiguous to the second rake face. The first rake face and the first region each have a rake angle which is a positive angle. The second rake face and the second region each have a rake angle which is a negative angle.
    Type: Application
    Filed: September 13, 2019
    Publication date: December 31, 2020
    Applicants: SUMITOMO ELECTRIC HARDMETAL CORP., BIG DAISHOWA SEIKI CO., LTD.
    Inventors: Naoki MATSUDA, Hideo MAENO, Chikara KIMURA, Yoshihiro KURODA, Takafumi TAKAMI, Junichi KOYAMA, Masahiro SASANO
  • CUTTING TOOL AND METHOD FOR MANUFACTURING SAME
    Publication number: 20200406364
    Abstract: A cutting tool includes: a substrate; and a coating film formed on the substrate, wherein the coating film includes a first layer formed on the substrate, and a second layer formed on the first layer, the first layer is composed of a boride including titanium as a component element, and the second layer is composed of a nitride including zirconium as a component element.
    Type: Application
    Filed: July 10, 2019
    Publication date: December 31, 2020
    Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Haruyo FUKUI, Makoto SETOYAMA, Keizo TANAKA
  • Drill
    Publication number: 20200406375
    Abstract: A drill includes a body. The body includes a first cutting edge, and a second cutting edge apart from the first cutting edge to the back end side relative to the first cutting edge and formed in a recess traversing an outer peripheral portion of the body. In a side view of the body in a first direction in which a distance between a center axis of the body and a first outer end of the first cutting edge is seen the longest, a second outer end of the second cutting edge is located at the center axis side relative to the first outer end of the first cutting edge.
    Type: Application
    Filed: August 7, 2018
    Publication date: December 31, 2020
    Applicant: Sumitomo Electric Hardmetal Corp.
    Inventors: Shuhei MISUMI, Minoru YOSHIDA, Yoshiji SATO
  • Cutting insert
    Patent number: 10875105
    Abstract: A cutting edge has a corner cutting edge, a flat drag, and a main cutting edge. The rake surface has a first rake surface portion, a second rake surface portion, and a third rake surface portion. The first rake surface portion has a first inclined surface inclined at a first angle. The second rake surface portion has a second inclined surface inclined at a second angle greater than the first angle. The first end portion and the second end portion are higher than the reference surface in a direction perpendicular to the reference surface, and the main cutting edge extends so as to intersect the reference surface when viewed in a direction parallel to the reference surface. A first step portion rising from the third rake surface portion and continuous with the first rake surface portion is provided on the rake surface.
    Type: Grant
    Filed: December 27, 2016
    Date of Patent: December 29, 2020
    Assignee: Sumitomo Electric Hardmetal Corp.
    Inventors: Yusuke Koike, Yuta Morisaki, Yasuyuki Kanada, Atsuhiko Maeta, Tomoyuki Fukuyama, Yoshinari Nagami
  • Cutting insert
    Patent number: 10875106
    Abstract: The cutting edge has: a corner cutting edge; a flat cutting edge continuous to a first end portion of the corner cutting edge; and a main cutting edge continuous to a second end portion of the corner cutting edge opposite to the first end portion of the corner cutting edge. The rake face has: a first rising surface portion; and a first rake face portion continuous to the first rising surface portion and located opposite to the corner cutting edge when viewed from the first rising surface portion. When viewed in a direction perpendicular to the reference surface, the first boundary includes a first line segment extending, from one of the flat cutting edge and the corner cutting edge, in a direction crossing a straight line extending along the main cutting edge.
    Type: Grant
    Filed: January 16, 2018
    Date of Patent: December 29, 2020
    Assignee: Sumitomo Electric Hardmetal Corp.
    Inventors: Shota Tsujimoto, Yusuke Koike, Yasuyuki Kanada, Atsuhiko Maeta, Tomoyuki Fukuyama, Yoshinari Nagami
  • Cutting tool
    Patent number: D909437
    Type: Grant
    Filed: August 16, 2018
    Date of Patent: February 2, 2021
    Assignee: Sumitomo Electric Hardmetal Corp.
    Inventors: Yoshiaki Sorai, Takahiro Okuno, Yuji Tomoda, Yasuyuki Kanada
  • Drilling tool
    Patent number: D910093
    Type: Grant
    Filed: May 25, 2018
    Date of Patent: February 9, 2021
    Assignee: Sumitomo Electric Hardmetal Corp.
    Inventors: Machiko Abe, Hiroyuki Shimada, Kazuya Yano
  • Cutting tool
    Patent number: D910094
    Type: Grant
    Filed: March 8, 2019
    Date of Patent: February 9, 2021
    Assignee: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Christoph Zeiner, Makoto Abe, Andreas Widmann
  • Cutting tool
    Patent number: D910095
    Type: Grant
    Filed: April 24, 2019
    Date of Patent: February 9, 2021
    Assignee: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Yifan Wen, Yosuke Shimamoto, Naoya Tsuda