Patents Assigned to Sumitomo Electric Hardmetal Corp.
  • Publication number: 20200055790
    Abstract: A surface-coated cutting tool including a substrate including a rake face and a flank face and a coating which covers a surface of the substrate is provided. The substrate is made of a cBN sintered material or a ceramic sintered material. The coating includes an alternating layer. The alternating layer is made by alternately stacking a first layer and a second layer different in composition from the first layer. The first layer contains Al, Cr, and N. The second layer contains Ti, Al, and N. A ratio T1/T2 between a thickness Ti of the first layer and a thickness T2 of the second layer is not lower than 0.1 and lower than 1. There are thirty or more interfaces at which the first layer and the second layer are in contact with each other.
    Type: Application
    Filed: September 20, 2017
    Publication date: February 20, 2020
    Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Makoto Setoyama, Nozomi Tsukihara, Yuki Tsutsumiuchi, Satoru Kukino, Yusuke Matsuda, Hironari Moroguchi
  • Publication number: 20200040462
    Abstract: A surface coated member having improved stability and a longer service life is provided. The surface coated member includes a base member and a hard coating formed on a surface thereof. The hard coating is constituted of one or more layers. At least one layer among the layers is a layer including hard particles. The hard particles include a multilayer structure having a first unit layer and a second unit layer being layered alternately. The first unit layer includes a first compound. The second unit layer includes a second compound. The first compound and the second compound are respectively made of one or more kind of element selected from the group consisting of a group 4 element, a group 5 element, a group 6 element of a periodic table, and Al, and one or more kind of element selected from the group consisting of B, C, N, and O.
    Type: Application
    Filed: October 9, 2019
    Publication date: February 6, 2020
    Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Anongsack Paseuth, Kazuo YAMAGATA, Susumu OKUNO, Hideaki KANAOKA, Hiroyuki MORIMOTO, Minoru ITOH
  • Publication number: 20200030889
    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: Application
    Filed: January 10, 2018
    Publication date: January 30, 2020
    Applicant: Sumitomo Electric Hardmetal Corp.
    Inventor: Gaku HARADA
  • Publication number: 20200030887
    Abstract: A hard coating includes two first crystalline phases, and a second crystalline phase disposed between the two first crystalline phases. The two first crystalline phases each include, independently, a laminate structure having a Ti1-x1Alx1N phase having a sodium chloride-type crystal structure, and an Alx2Ti1-x2N phase having a sodium chloride-type crystal structure that are alternately stacked. An Al composition ratio x1 of the Ti1-x1Alx1N phase satisfies a relationship 0.5?x1?0.75, and an Al composition ratio x2 of the Alx2Ti1-x2N phase satisfies a relationship 0.75<x2?0.95. The laminate structure includes a region in which an Al concentration periodically changes along a stacking direction of the Ti1-x1Alx1N phase and the Alx2Ti1-x2N phase. In this region, a difference between a maximum value of the Al composition ratio x2 and a minimum value of the Al composition ratio x1 is greater than 0.25. The second crystalline phase contains AlN having a wurtzite-type crystal structure.
    Type: Application
    Filed: September 3, 2019
    Publication date: January 30, 2020
    Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Anongsack Paseuth, Takanori Detani
  • Patent number: 10543537
    Abstract: A method for manufacturing a machine component having a rotation symmetry plane includes machining a rotation symmetry plane. The machining a rotation symmetry plane includes determining a track of the cutting. The determining a track determines the track in accordance with a condition that (1) a first end portion of the cutting edge is positioned at a cutting start position of the rotation symmetry plane, (2) N regions defined by division of the cutting edge successively come in contact with the rotation symmetry plane, (3) an inclination of a tangent line at a point of cutting of each of the N regions is equal to a target inclination of a tangent line which passes through the point of cutting and comes in contact with the rotation symmetry plane in a cut plane of the rotation symmetry plane, and (4) a second end of the cutting edge is positioned at a cutting end position of the rotation symmetry plane.
    Type: Grant
    Filed: July 7, 2016
    Date of Patent: January 28, 2020
    Assignees: Sumitomo Electric Hardmetal Corp., Sumitomo Electric Industries, Ltd., Sumitomo Electric Tool Net, Inc.
    Inventors: Yasuyuki Kanada, Kunishige Tanaka, Soichiro Okumura, Jun Okamoto, Futoshi Takeshita
  • Patent number: 10525538
    Abstract: A cutting tool includes a shaft portion and a plurality of edge region groups. The ridgeline between the first rake face portion and the first flank face portion constitutes a first cutting edge portion. The ridgeline between the second rake face portion and the second flank face portion constitutes a second cutting edge portion. As seen from the direction perpendicular to a plane tangent to the outer peripheral surface, in a state where the central axis overlaps a first end on the front end side of the first cutting edge portion, the inclination angle of the first cutting edge portion relative to the central axis is larger than the inclination angle of a straight line relative to the central axis, the straight line connecting the first end to a second end on the front end side of the second cutting edge portion.
    Type: Grant
    Filed: November 15, 2016
    Date of Patent: January 7, 2020
    Assignees: Sumitomo Electric Hardmetal Corp., Sumitomo Electric Industries, Ltd.
    Inventors: Yusuke Matsuda, Taisuke Higashi, Satoru Kukino, Takashi Kanda
  • Patent number: 10493536
    Abstract: There is provided a rotary tool including a rotary tool body and a blade provided to the rotary tool body and having a cutting edge, the blade containing 80% by volume or more of diamond, and the blade including a land surface extending along the cutting edge, and a chip breaker having a recess located opposite to the cutting edge with the land surface therebetween.
    Type: Grant
    Filed: September 7, 2016
    Date of Patent: December 3, 2019
    Assignee: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Gaku Harada, Yasuyuki Kanada, Kouji Shimanuki
  • Publication number: 20190344355
    Abstract: A cutting tool includes: a rake face; a flank face continuous to the rake face; and a cutting edge formed by a ridgeline between the rake face and the flank face. The cutting tool includes: a base material having a first face on a side of the rake face and a second face on a side of the flank face; and a diamond layer covering the first face and the second face. The first face includes: a first top face continuous to the second face; and a second top face continuous to the first top face and disposed such that the first top face is sandwiched between the second top face and the second face. An angle formed between the first top face and the second top face is a negative angle in a cross section perpendicular to the cutting edge.
    Type: Application
    Filed: July 13, 2017
    Publication date: November 14, 2019
    Applicant: Sumitomo Electric Hardmetal Corp.
    Inventors: Yutaka KOBAYASHI, Katsuo KAZAHAYA
  • Publication number: 20190344359
    Abstract: A method for processing a workpiece by using a diamond tool comprising nano-polycrystalline diamond or vapor-phase synthesized single crystal diamond, the nano-polycrystalline diamond comprising 10 ppm or more and 1000 ppm or less of nitrogen atoms, the vapor-phase synthesized single crystal diamond comprising 1 ppm or more and 100 ppm or less of nitrogen atoms, in processing the workpiece, the diamond tool having a temperature of 400° C. or lower at a contact point of the workpiece and the diamond tool, a spatial region within a distance of 3 cm from the contact point having an oxygen concentration of 20% or less.
    Type: Application
    Filed: August 7, 2017
    Publication date: November 14, 2019
    Applicants: SUMITOMO ELECTRIC HARDMETAL CORP., Sumitomo Electric Industries, Ltd.
    Inventors: Akihiko UEDA, Machiko ABE, Yutaka KOBAYASHI, Satoru KUKINO, Takashi HARADA
  • Patent number: 10434580
    Abstract: A hard coating includes two first crystalline phases, and a second crystalline phase containing AlN of a wurtzite-type crystal structure disposed therebetween. The two first crystalline phases each include, independently, a laminate structure having a Ti1-x1Alx1N phase having a sodium chloride-type crystal structure, and an Alx2Ti1-x2N phase having a sodium chloride-type crystal structure that are alternately stacked. An Al composition ratio x1 satisfies a relationship 0.5?x1?0.75, and an Al composition ratio x2 satisfies a relationship 0.75<x2?0.95. The laminate structure includes a region in which an Al concentration periodically changes along a stacking direction of the Ti1-x1Alx1N phase and the Alx2Ti1-x2N phase. In this region, a difference between a maximum value of the Al composition ratio x2 and a minimum value of the Al composition ratio x1 is greater than 0.25.
    Type: Grant
    Filed: September 30, 2015
    Date of Patent: October 8, 2019
    Assignee: Sumitomo Electric Hardmetal Corp.
    Inventors: Anongsack Paseuth, Takanori Detani
  • Publication number: 20190283148
    Abstract: A cutting insert according to the present disclosure includes a first surface, a second surface, a side surface, and a cutting edge. The first surface has a rake face continuous to the cutting edge. The cutting edge has a corner cutting edge, a flat cutting edge, and a main cutting edge. The rake face has a first rake face portion, a second rake face portion, and a third rake face portion, the first rake face portion being continuous to the flat cutting edge, the second rake face portion being continuous to the main cutting edge, the third rake face portion being continuous to the corner cutting edge and being located between the first rake face portion and the second rake face portion. The rake face is provided with a level difference portion.
    Type: Application
    Filed: November 30, 2017
    Publication date: September 19, 2019
    Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Yusuke Koike, Yasuyuki Kanada, Atsuhiko Maeta, Tomoyuki Fukuyama, Yoshinari Nagami, Yuta Morisaki
  • Publication number: 20190276922
    Abstract: A method for manufacturing a member according to one embodiment of the present disclosure is a method for manufacturing a member having a substrate and a sprayed coating formed on a surface of the substrate. The method includes: supplying an oil into a recessed portion of the sprayed coating, a kinematic viscosity of the oil at 40° C. being more than or equal to 3 mm2/s and less than or equal to 43 mm2/s; and dry-cutting, using a cutting tool, a surface of the sprayed coating with the recessed portion supplied with the oil. A supplied amount of the oil is more than or equal to 0.1 weight % and less than or equal to 2.7 weight % with respect to an apparent weight of the sprayed coating.
    Type: Application
    Filed: December 19, 2017
    Publication date: September 12, 2019
    Applicants: SUMITOMO ELECTRIC HARDMETAL CORP., SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Kazushi Takahama, Satoru Kukino
  • Publication number: 20190271062
    Abstract: A composite sintered material includes: a plurality of diamond grains having an average grain size of less than or equal to 10 ?m; a plurality of cubic boron nitride grains having an average grain size of less than or equal to 2 ?m; and a remainder of a binder phase, wherein at least parts of adjacent diamond grains are bound to one another, the binder phase includes cobalt, in the composite sintered material, a content of the diamond grains is more than or equal to 30 volume % and less than or equal to 94 volume %, a content of the cubic boron nitride grains is more than or equal to 3 volume % and less than or equal to 40 volume %, and a content of the cobalt is more than or equal to 3 volume % and less than or equal to 30 volume %.
    Type: Application
    Filed: October 10, 2017
    Publication date: September 5, 2019
    Applicants: SUMITOMO ELECTRIC INDUSTRIES, LTD., SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Katsumi Okamura, Naoki Watanobe, Akito Ishii, Takashi Harada, Satoru Kukino, Taisuke Higashi
  • Publication number: 20190270141
    Abstract: A manufacturing method, a manufacturing apparatus, a computer readable recording medium, and a program for manufacturing a machine component having a rotation symmetry plane are provided.
    Type: Application
    Filed: May 20, 2019
    Publication date: September 5, 2019
    Applicants: SUMITOMO ELECTRIC HARDMETAL CORP., Sumitomo Electric Industries, Ltd., Sumitomo Electric Tool Net, Inc.
    Inventors: Yasuyuki Kanada, Kunishige Tanaka, Soichiro Okumura, Jun Okamoto, Futoshi Takeshita
  • Publication number: 20190255621
    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: Application
    Filed: December 27, 2016
    Publication date: August 22, 2019
    Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Yusuke Koike, Yuta Morisaki, Yasuyuki Kanada, Atsuhiko Maeta, Tomoyuki Fukuyama, Yoshinari Nagami
  • Patent number: D861754
    Type: Grant
    Filed: April 11, 2017
    Date of Patent: October 1, 2019
    Assignee: Sumitomo Electric Hardmetal Corp.
    Inventors: Tomoyuki Fukuyama, Yosuke Shimamoto, Junya Okida
  • Patent number: D863382
    Type: Grant
    Filed: April 27, 2017
    Date of Patent: October 15, 2019
    Assignee: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Makoto Abe, Christoph Zeiner
  • Patent number: D865823
    Type: Grant
    Filed: January 18, 2019
    Date of Patent: November 5, 2019
    Assignee: Sumitomo Electric Hardmetal Corp.
    Inventors: Makoto Abe, Christoph Zeiner
  • Patent number: D872145
    Type: Grant
    Filed: November 19, 2018
    Date of Patent: January 7, 2020
    Assignee: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Hideo Maeno, Yosuke Shimamoto, Naoki Matsuda
  • Patent number: D872780
    Type: Grant
    Filed: November 30, 2017
    Date of Patent: January 14, 2020
    Assignee: Sumitomo Electric Hardmetal Corp.
    Inventors: Takeshi Sato, Tadashi Yamaguchi, Shinichiro Yurugi