Patents Assigned to Sumitomo Electric Hardmetal Corp.
  • Patent number: 10287708
    Abstract: In a single-crystal diamond material, a concentration of non-substitutional nitrogen atoms is not more than 200 ppm, a concentration of substitutional nitrogen atoms is lower than the concentration of the non-substitutional nitrogen atoms, and the single-crystal diamond material has a crystal growth main surface having an off angle of not more than 20°. A perforated tool includes a single-crystal diamond die, wherein in the single-crystal diamond die, a concentration of non-substitutional nitrogen atoms is not more than 200 ppm, a concentration of substitutional nitrogen atoms is lower than the concentration of the non-substitutional nitrogen atoms, and the single-crystal diamond die has a low-index plane represented by a Miller index of not less than ?5 and not more than 5 in an integer, a perpendicular line of the low-index plane having an off angle of not more than 20° relative to an orientation of a hole for wire drawing.
    Type: Grant
    Filed: July 22, 2016
    Date of Patent: May 14, 2019
    Assignees: SUMITOMO ELECTRIC INDUSTRIES, LTD., SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Yoshiki Nishibayashi, Natsuo Tatsumi, Hitoshi Sumiya, Akihiko Ueda, Yutaka Kobayashi
  • Patent number: 10272498
    Abstract: A composite sintered material contains cubic boron nitride particles and binder particles. The composite sintered material contains 40 vol % or more and 80 vol % or less of the cubic boron nitride particles. The binder particles contain TiCN particles. The composite sintered material shows a first peak belonging to a (200) plane of the TiCN particles in a range in which a Bragg angle 2? is 41.7° or more and 42.6° or less in an X-ray diffraction spectrum measured using a Cu-K? ray as a ray source.
    Type: Grant
    Filed: March 20, 2015
    Date of Patent: April 30, 2019
    Assignee: Sumitomo Electric Hardmetal Corp.
    Inventors: Naoki Watanobe, Yusuke Matsuda, Katsumi Okamura, Nozomi Tsukihara, Makoto Setoyama
  • Patent number: 10267967
    Abstract: Provided is an optical component including: a pair of substrate bodies each having a refractive index of not lower than 2 with respect to infrared laser light, and having an incident surface or an emitting surface and an inclined surface inclined with respect to this surface at ?i; and an antireflective film which prevents reflection of normal incident infrared laser light, wherein ?i is not smaller than a complementary angle ?tB of a Brewster's angle ?B of infrared laser light incident on a plate member and smaller than a critical angle ?c, the inclined surfaces are opposed to each other via a gap, and the incident surface and the emitting surface are arranged in parallel to each other.
    Type: Grant
    Filed: April 17, 2015
    Date of Patent: April 23, 2019
    Assignees: Sumitomo Electric Industries, Ltd., Sumitomo Electric Hardmetal Corp.
    Inventors: Hiromi Iwamoto, Kunimitsu Yajima
  • Patent number: 10259048
    Abstract: A surface-coated cutting tool includes a base material and a coating. A hard layer in the coating includes a plurality of crystal grains having a sodium chloride-type crystal structure. When the angle of intersection between the normal direction to (111) plane that is a crystal plane of the crystal grain and the normal direction to the surface of the base material is measured, a proportion A of the crystal grains having the angle of intersection of 0 degree or more to less than 20 degrees is 50% or more. The length of ?3 grain boundaries is less than 50% of the length of ?3-29 grain boundaries. The crystal grain has a layered structure in which a first layer and a second layer are alternately stacked. The total thickness of the first layer and the second layer adjacent to each other is 3 to 40 nm.
    Type: Grant
    Filed: June 22, 2016
    Date of Patent: April 16, 2019
    Assignee: Sumitomo Electric Hardmetal Corp.
    Inventors: Anongsack Paseuth, Hideaki Kanaoka, Satoshi Ono, Shinya Imamura
  • Patent number: 10252343
    Abstract: A surface-coated cutting tool includes a base material and a coating formed on a surface of the base material. The coating includes a first hard coating layer including crystal grains having a sodium chloride-type crystal structure. The crystal grain has a layered structure in which a first layer composed of nitride or carbonitride of AlxTi1-x and a second layer composed of nitride or carbonitride of AlyTi1-y are stacked alternately into one or more layers. The first layer each has an atomic ratio x of Al varying in a range of 0.6 or more to less than 1. The second layer each has an atomic ratio y of Al varying in a range of 0.45 or more to less than 0.6. The largest value of difference between the atomic ratio x and the atomic ratio y is 0.05?x?y?0.5.
    Type: Grant
    Filed: June 7, 2016
    Date of Patent: April 9, 2019
    Assignee: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Anongsack Paseuth, Hideaki Kanaoka, Shinya Imamura, Satoshi Ono
  • Publication number: 20190061018
    Abstract: A cutting tool has a main body and a cutter. The main body has an outer peripheral surface having one end and the other end. The cutter is fixed to the main body. The main body is provided with a hole extending in a direction from a region surrounded by one end toward a region surrounded by the other end. When viewed from this direction, the shape of the opening of the hole is circular, and the hole is provided inner than the outer peripheral surface. The cutter has a member disposed inside the hole.
    Type: Application
    Filed: October 13, 2016
    Publication date: February 28, 2019
    Applicants: SUMITOMO ELECTRIC HARDMETAL CORP., SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventor: Hidekazu Kojo
  • Patent number: 10213851
    Abstract: A cutting tool including: a tool body (2) provided with an insert support seat (5) including a major seat surface (5a) that supports a bearing surface of a cutting insert, a plurality of seat side surfaces (5b, 5c) that supports side surfaces of the cutting insert at different positions, and a thinned portion (5d) continuous with the major seat surface and the seat side surfaces; and a cutting insert attached to the insert support seat, wherein a ridge at a position where the major seat surface and the thinned portion intersect, a ridge at a position where the seat side surface and the thinned portion intersect, and a ridge at a position where the thinned portions continuous with each other intersect are each formed of a convex arc curved surface.
    Type: Grant
    Filed: June 3, 2015
    Date of Patent: February 26, 2019
    Assignee: Sumitomo Electric Hardmetal Corp.
    Inventors: Yusuke Koike, Kouki Matsubara, Katsuya Nakakihara, Atsuhiko Maeta
  • Publication number: 20190030626
    Abstract: A cutting insert includes a main body including a first face, a second face, and a third face. The second face includes a rake face. Among the outer-peripheral sides of the second face, the boundary portion with the first face is a main cutting edge. When viewed from the side where the first face is disposed, the main cutting edge includes a first straight portion, a second straight portion, and a curved portion. The first straight portion is located adjacent to a reference side. The second straight portion is arranged at a distance from the first straight portion. The curved portion connects the first straight portion and the second straight portion. A first intersection angle of the first straight portion with respect to the reference side is different from a second intersection angle of the second straight portion with respect to the reference side.
    Type: Application
    Filed: March 1, 2017
    Publication date: January 31, 2019
    Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventor: Yuta Morisaki
  • Publication number: 20190001423
    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: Application
    Filed: November 15, 2016
    Publication date: January 3, 2019
    Applicants: SUMITOMO ELECTRIC HARDMETAL CORP., Sumitomo Electric Industries, Ltd.
    Inventors: Yusuke Matsuda, Taisuke Higashi, Satoru Kukino, Takashi Kanda
  • Patent number: 10166611
    Abstract: A cutting tool includes a base material and a coating formed on the base material. The coating includes a hard layer. The hard layer includes a plurality of crystal grains having a sodium chloride-type crystal structure. When the angle of intersection between the normal direction to (001) plane that is a crystal plane of the crystal grain and the normal direction to the surface of the base material is measured, a proportion A of the crystal grains having the angle of intersection of 0 degree or more to less than 20 degrees is 50% or more. The length of ?3 grain boundaries is 50% or more of the length of ?3-29 grain boundaries and is 1% or more and 30% or less of the total length of all boundaries that is the sum of the length of ?3-29 grain boundaries and the length of general boundaries.
    Type: Grant
    Filed: June 22, 2016
    Date of Patent: January 1, 2019
    Assignee: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Anongsack Paseuth, Satoshi Ono, Hideaki Kanaoka, Shinya Imamura
  • Publication number: 20180369924
    Abstract: A cutting tool according to one aspect of the present disclosure includes an attaching portion, a cutting portion having a core portion and a surface portion, and a joint portion. The attaching portion includes a hard component and a hard material. The hard component is at least one selected from the group consisting of TiC, TiCN, W, WC, Al2O3, and a combination of at least one of CBN and diamond and at least one of W and WC. The hard material includes one or two or more types of iron group elements, and has a Young's modulus of not more than 350 GPa. The core portion includes a cemented carbide material. The surface portion includes PCD or CBN. The cutting portion has a chamfer portion. The surface portion includes a groove, a flank face, and a cutting edge. The cutting edge extends toward the attaching portion.
    Type: Application
    Filed: November 15, 2016
    Publication date: December 27, 2018
    Applicants: SUMITOMO ELECTRIC HARDMETAL CORP., Sumitomo Electric Industries, Ltd., Sumitomo Electric Industries, Ltd.
    Inventors: Taisuke Higashi, Yusuke Matsuda, Satoru Kukino, Takashi Kanda, Katsumi Okamura
  • Patent number: 10160083
    Abstract: A method for manufacturing a cubic boron nitride cutting tool including a base metal and sintered cubic boron nitride compact at a corner portion of the base metal, capable of improving the accuracy of the center height and reducing the angle of inclination or width of a negative rake face; and the cubic boron nitride cutting tool. The method includes grinding the compact by pressing it against an end face of a grindstone of a grinder to form flank and rake faces on the compact while the base metal of the cutting tool is held by a chuck of the grinder, so that the compact is substantially ground. The rake face is formed to be recessed from a top face of the base metal or only a portion of the compact that protrudes from a base-metal rake face is ground while the tool is continuously held by the chuck.
    Type: Grant
    Filed: December 27, 2013
    Date of Patent: December 25, 2018
    Assignee: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Naoki Watanobe, Katsumi Okamura, Hiroki Yonekura, Yosuke Korogi
  • Patent number: 10155269
    Abstract: In a drill, a negative land is provided on a rake face, and a ridge line at an intersecting position of the negative land and a flank face, a ridge line at an intersecting position of the flank face and a margin, and a ridge line at an intersecting position of the negative land and the margin are convex faces in a longitudinal rectangular cross section. When a curvature radius of the convex face of a first ridge line at the intersecting position of the flank face and the negative land is 1, at curvature radius of the convex face of a second ridge line at the intersecting position of the flank face and the margin is 0.8 to 1.5 times the curvature radius of the first ridge line, and a curvature radius of the convex face of a fourth ridge line at the intersecting position of the negative land and the margin is 1.5 to 3.0 times the curvature radius of the first ridge line.
    Type: Grant
    Filed: September 9, 2015
    Date of Patent: December 18, 2018
    Assignee: Sumitomo Electric Hardmetal Corp.
    Inventor: Masaaki Jindai
  • Patent number: 10155271
    Abstract: A cutting tool including: a tool body (2) provided with an insert support seat (5) including a major seat surface (5a) that supports a bearing surface of a cutting insert, a plurality of seat side surfaces (5b, 5c) that supports side surfaces of the cutting insert at different positions, and a thinned portion (5d) continuous with the major seat surface and the seat side surfaces; and a cutting insert attached to the insert support seat, wherein a ridge at a position where the major seat surface and the thinned portion intersect, a ridge at a position where the seat side surface and the thinned portion intersect, and a ridge at a position where the thinned portions continuous with each other intersect are each formed of a convex arc curved surface.
    Type: Grant
    Filed: June 3, 2015
    Date of Patent: December 18, 2018
    Assignee: Sumitomo Electric Hardmetal Corp.
    Inventors: Yusuke Koike, Kouki Matsubara, Katsuya Nakakihara, Atsuhiko Maeta
  • Patent number: 10137505
    Abstract: A cutting tool includes a base material and a coating formed on the base material. The coating includes a hard layer. The hard layer includes a plurality of crystal grains having a sodium chloride-type crystal structure. When the angle of intersection between the normal direction to (001) plane that is a crystal plane of the crystal grain and the normal direction to the surface of the base material is measured, a proportion A of the crystal grains having the angle of intersection of 0 degree or more to less than 20 degrees is 50% or more. The length of ?3 grain boundaries is 50% or more of the length of ?3-29 grain boundaries and is 1% or more and 30% or less of the total length of all boundaries that is the sum of the length of ?3-29 grain boundaries and the length of general boundaries.
    Type: Grant
    Filed: June 22, 2016
    Date of Patent: November 27, 2018
    Assignee: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Anongsack Paseuth, Satoshi Ono, Hideaki Kanaoka, Shinya Imamura
  • Publication number: 20180333785
    Abstract: A surface-coated cutting tool includes a base material and a coating formed on a surface of the base material. The coating includes a first hard coating layer including crystal grains having a sodium chloride-type crystal structure. The crystal grain has a layered structure in which a first layer composed of nitride or carbonitride of AlxTi1?x and a second layer composed of nitride or carbonitride of AlyTi1?y are stacked alternately into one or more layers. The first layer each has an atomic ratio x of Al varying in a range of 0.6 or more to less than 1. The second layer each has an atomic ratio y of Al varying in a range of 0.45 or more to less than 0.6. The largest value of difference between the atomic ratio x and the atomic ratio y is 0.05?x?y?0.5.
    Type: Application
    Filed: June 7, 2016
    Publication date: November 22, 2018
    Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Anongsack Paseuth, Hideaki Kanaoka, Shinya Imamura, Satoshi Ono
  • Patent number: D844034
    Type: Grant
    Filed: April 21, 2016
    Date of Patent: March 26, 2019
    Assignee: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventor: Kazuya Yano
  • Patent number: D844683
    Type: Grant
    Filed: April 21, 2016
    Date of Patent: April 2, 2019
    Assignee: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventor: Kazuya Yano
  • Patent number: D847231
    Type: Grant
    Filed: January 5, 2016
    Date of Patent: April 30, 2019
    Assignee: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Machiko Abe, Hiroyuki Shimada, Kazuya Yano
  • Patent number: D847885
    Type: Grant
    Filed: May 16, 2016
    Date of Patent: May 7, 2019
    Assignee: Sumitomo Electric Hardmetal Corp.
    Inventors: Junya Okida, Tomoyuki Fukuyama, Naoya Tsuda, Shinya Imamura