Patents by Inventor Shinya Imamura

Shinya Imamura has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20100232893
    Abstract: An indexable insert according to the present invention includes a substrate and a coating layer formed on the substrate, the coating layer is formed of a plurality of layers including at least a TiCN layer, at least one of the plurality of layers is provided with compressive residual stress, the TiCN layer is mainly composed of TiCN and has highest peak intensity in a (422) plane and second peak intensity in a (311) plane in X-ray diffraction, and a ratio of peak intensity I(422)/I(311) between peak intensity I(422) of the (422) plane and peak intensity I(311) of the (311) plane is not lower than 1.1 and not higher than 10.
    Type: Application
    Filed: October 8, 2008
    Publication date: September 16, 2010
    Inventors: Shinya Imamura, Naoya Omori, Yoshio Okada, Chikako Kojima, Susumu Okuno
  • Publication number: 20100215951
    Abstract: A surface-coated cutting tool according to the present invention including a substrate and a coating film formed on the substrate is characterized in that the coating film includes a composite super multi-layer film obtained by alternately stacking one or more first super multi-layer film and one or more second super multi-layer film, the first super multi-layer film above is formed by alternately stacking one or more A1 layer and one or more B layer, the second super multi-layer film above is formed by alternately stacking one or more A2 layer and one or more C layer, each of the A1 layer above and the A2 layer above is composed of any of TiN, TiCN, TiAlN, and TiAlCN, the B layer above is composed of TiSiN or TiSiCN, and the C layer above is composed of AlCrN or AlCrCN.
    Type: Application
    Filed: May 23, 2008
    Publication date: August 26, 2010
    Inventors: Akihiko Shibata, Haruyo Fukui, Shinya Imamura, Akira Kobayashi
  • Patent number: 7758950
    Abstract: A surface-coated cutting tool according to the present invention includes a base material and a coated film formed on the base material. The coated film serves as an outermost layer on the base material and has compressive stress. The compressive stress is varied so as to have strength distribution in a direction of thickness of the coated film. The strength distribution is characterized in that the compressive stress at a surface of the coated film continuously increases from the surface of the coated film toward a first intermediate point located between the surface of the coated film and a bottom surface of the coated film and the compressive stress attains a relative maximum point at the first intermediate point.
    Type: Grant
    Filed: July 15, 2005
    Date of Patent: July 20, 2010
    Assignees: Sumitomo Electric Hardmetal Corp., Sumitomo Electric Industries, Ltd.
    Inventors: Hideki Moriguchi, Haruyo Fukui, Shinya Imamura, Koji Yamaguchi, Junji Iihara
  • Patent number: 7695222
    Abstract: An indexable insert (1) of the present invention includes a substrate (8) and a coating layer which includes inner layer and an outer layer. The inner layer includes an alumina layer or an alumna-containing layer serving as an outermost layer in contact with the outer layer, and the outer layer is composed of at least one metal selected from the group consisting of the periodic table group IVa elements, Va elements, and VIa elements, Al, and Si or a compound of at least one of the metals and at least one element selected from the group consisting of carbon, nitrogen, oxygen, and boron. In addition, the outer layer, in a portion involved in cutting, satisfies B/A?0.9 wherein A ?m is the average thickness on the flank face (3) side, and B ?m is the average thickness on the rake face (2) side.
    Type: Grant
    Filed: October 13, 2006
    Date of Patent: April 13, 2010
    Assignee: Sumitomo Electric Hardmetal Corp.
    Inventors: Naoya Omori, Yoshio Okada, Minoru Itoh, Susumu Okuno, Shinya Imamura
  • Publication number: 20100040423
    Abstract: An indexable insert (1) of the present invention has a structure including at least a rake face (2) and a bearing surface (5), the indexable insert (1) including a substrate and a coating layer disposed on the substrate, wherein the coating layer includes one or more layers and satisfies the relationship 0.9>R1/R2, wherein R1 represents the surface roughness Rz of the coating layer in the rake face (2), and R2 represents the surface roughness Rz of the coating layer in the bearing surface (5).
    Type: Application
    Filed: March 22, 2006
    Publication date: February 18, 2010
    Applicant: Sumitomo Electric Hardmetal Corp.
    Inventors: Naoya Omori, Yoshio Okada, Minoru Itoh, Susumu Okuno, Shinya Imamura
  • Publication number: 20090311056
    Abstract: A indexable insert (1) of the present invention has a structure including at least a rake face (2) and a bearing surface (5), the indexable insert (1) including a substrate and a coating layer disposed on the substrate, wherein the coating layer includes one or more layers, and at least one layer of the one or more layers covers the entire surface of the substrate and satisfies the relationship F1<F2, wherein F1 represents the residual stress in the rake face (2) and F2 represents the residual stress in the bearing surface (5).
    Type: Application
    Filed: March 14, 2006
    Publication date: December 17, 2009
    Applicant: Sumitomo Electric Hardmetal Corp.
    Inventors: Naoya Omori, Yoshio Okada, Minoru Itoh, Susumu Okuno, Shinya Imamura
  • Publication number: 20090297835
    Abstract: The present invention relates to a coated cutting tool (1) including a substrate (8) and a coating (9) formed on the substrate (8), wherein the coating (9) includes a first coating (10) composed of TiCN and a second coating (ii) composed of ?-Al2O3, the first coating (10) is positioned between the substrate (8) and the second coating (11) and has tensile stress S1, the second coating (11) has compressive stress S2, and the tensile stress S1 and the compressive stress S2 are defined by the following equation (I): 400 MPa?|S2?S1|?3500 MPa??(I)
    Type: Application
    Filed: December 9, 2005
    Publication date: December 3, 2009
    Applicant: Sumitomo Electric Hardmetal Corp.
    Inventors: Yoshio Okada, Naoya Omori, Minoru Itoh, Norihiro Takanashi, Shinya Imamura, Susumu Okuno
  • Publication number: 20090274525
    Abstract: An indexable insert (1) according to the present invention has at least a rake face (2) and a seating face (5). The indexable insert (1) includes a substrate and a coating formed on the substrate. The substrate is exposed in the seating face (5) without the coating formed thereon.
    Type: Application
    Filed: March 10, 2006
    Publication date: November 5, 2009
    Applicant: Sumitomo Electric Hardmetal Corp.
    Inventors: Naoya Omori, Yoshio Okada, Minoru Itoh, Susumu Okuno, Shinya Imamura
  • Publication number: 20090269150
    Abstract: An indexable insert (1) includes a substrate (8) and a coating layer formed on the substrate. The coating layer includes an inner layer and an outer layer. The inner layer is constituted by a layer containing at least one element selected from the group consisting of Group IVa elements, Group Va elements, and Group VIa elements in the periodic table, and Al and Si. The uppermost layer of the inner layer in contact with the outer layer is composed of a compound at least containing Ti and at least one of nitrogen and boron. The outer layer is constituted by an alumina layer or an alumina-containing layer. In a region involved in cutting, the outer layer satisfies B/A?0.9 where A ?m is the average thickness at the flank face (3) side and B ?m is the average thickness at the rake face (2) side.
    Type: Application
    Filed: October 30, 2006
    Publication date: October 29, 2009
    Applicant: Sumitomo Electric Hardmetal Corp.
    Inventors: Naoya Omori, Yoshio Okada, Minoru Itoh, Susumu Okuno, Shinya Imamura
  • Publication number: 20090232611
    Abstract: An indexable cutting insert (1) of the present invention includes at least one face (2), at least two flanks (3), at least one edge line (4), at least one corner (9), and a base layer having a different color from a use-state indicating layer. The use-state indicating layer is formed on at least one of the flanks (3) so that the use-state indicating layer is formed on the base layer over the entire surface or a part of a region A2 excluding at least one region A1 of 2 mm2 containing at least one corner (9).
    Type: Application
    Filed: July 24, 2006
    Publication date: September 17, 2009
    Applicant: SUMITOMO ELECTRIC HARDMETAL CORP
    Inventors: Naoya Omori, Yoshio Okada, Minoru Itoh, Norihiro Takanashi, Shinya Imamura
  • Patent number: 7553113
    Abstract: The present invention provides an indexable insert (1) which includes a body (8), a base layer disposed on the body (8), and a wear-indicating layer disposed on a part of the base layer, wherein at least one surface of the body (8) serves as a rake face (2), at least one other surface of the body serves as a flank face (3), the rake face (2) being connected to the flank face (3) with a cutting edge (4) therebetween, the base layer has a color different from that of the wear-indicating layer, and the wear-indicating layer is disposed on the rake face and on the base layer entirely or partially in a region A2 other than a region A1 that extends to a distance of 0.2 mm or more and less than 4.0 mm from the cutting edge.
    Type: Grant
    Filed: December 15, 2005
    Date of Patent: June 30, 2009
    Assignee: Sumitomo Electric Industries, Ltd
    Inventors: Naoya Omori, Yoshio Okada, Minoru Itoh, Norihiro Takanashi, Shinya Imamura, Susumu Okuno
  • Publication number: 20090162152
    Abstract: A surface-coated cutting tool includes a coating layer (108) formed on a substrate (104), wherein assuming that the average thickness of the coating layer (108) on a first surface (106) and a second surface (107) of the substrate (104) is A, a difference between the maximum and minimum thicknesses of the coating layer (108) is larger than 0.04×A. Also, a surface-coated cutting tool includes a coating layer (108) formed on a substrate (104), wherein assuming that the average thickness of the coating layer (108) on a first surface (106) of the substrate (104) is B1, and the average thickness of the coating layer (108) on a second surface (107) of the substrate (104) is B2, a value obtained by dividing an absolute difference value between B1 and B2 by a larger value of B1 and B2 is larger than 0.04.
    Type: Application
    Filed: August 8, 2007
    Publication date: June 25, 2009
    Inventors: Naoya Omori, Yoshio Okada, Minoru Itoh, Shinya Imamura, Susumu Okuno, Hiroyuki Morimoto, Chikako Kojima
  • Patent number: 7544024
    Abstract: The present invention relates to a coated cutting insert having a substrate, a base layer which is formed on the substrate and an indicating layer which is formed on a portion of the base layer, characterized in that in this substrate, at least one surface serves as a rake face, at least one other surface serves as a flank face, and a ridge where the rake face and the flank face cross serves as a cutting edge, the base layer has a color which is different from that of the above described indicating layer, and this indicating layer is formed on the flank face, and on the base layer over an entirety or a portion of a region excluding a region extending from the cutting edge in the vertical direction with a distance of no less than 0.2 mm and less than 3.0 mm.
    Type: Grant
    Filed: October 20, 2005
    Date of Patent: June 9, 2009
    Assignee: Sumitomo Electric Hardmetal Corp.
    Inventors: Naoya Omori, Yoshio Okada, Minoru Itoh, Norihiro Takanashi, Shinya Imamura
  • Patent number: 7527457
    Abstract: A surface-coated cutting tool includes a base material on which formed an inner layer composed of a compound containing Al, at least one of elements Cr and V and at least one element selected from the group consisting of nitrogen, carbon and oxygen, and an outermost layer composed of a carbonitride of TiSi is further formed on the inner layer. The surface-coated cutting tool is appropriately used for such tools as drill, end mill, throwaway tips for milling and turning, metal saw, gear cutting tool, reamer, and tap. The surface-coated cutting tool improved in peeling resistance and wear resistance as compared with conventional tools can thus be provided.
    Type: Grant
    Filed: March 16, 2005
    Date of Patent: May 5, 2009
    Assignees: Sumitomo Electric Hardmetal Corp., Sumitomo Electric Industries, Ltd.
    Inventors: Hideki Moriguchi, Haruyo Fukui, Naoya Omori, Shinya Imamura, Makoto Setoyama
  • Publication number: 20090097933
    Abstract: A surface-coated cutting tool includes a coating layer (108) formed on a substrate (104), wherein assuming that the average thickness of the coating layer (108) on a first surface (106) and a second surface (107) of the substrate (104) is A, a difference between the maximum and minimum thicknesses of the coating layer (108) is 0.04×A or less. Also, a surface-coated cutting tool includes a coating layer (108) formed on a substrate (104), wherein assuming that the average thickness of the coating layer (108) on a first surface (106) of the substrate (104) is B1, and the average thickness of the coating layer (108) on a second surface (107) of the substrate (104) is B2, a value obtained by dividing an absolute difference value between B1 and B2 by a larger value of B1 and B2 is 0.04 or less.
    Type: Application
    Filed: August 8, 2007
    Publication date: April 16, 2009
    Applicant: Sumitomo Electric Hardmetal Corp
    Inventors: Naoya Omori, Yoshio Okada, Minoru Itoh, Shinya Imamura, Susumu Okuno, Hiroyuki Morimoto, Chikako Kojima
  • Publication number: 20090067938
    Abstract: An indexable cutting insert (1) includes a base (8) and a coating layer, wherein the coating layer includes an inner sublayer and an outer sublayer, each of subsublayer constituting the inner sublayer is composed of a compound containing at least one element selected from the group consisting of Group IVa elements, Group Va elements, Group VIa elements in the periodic table, Al, and Si, the outer sublayer is an alumina sublayer or a sublayer containing aluminum, and in portions of the outer sublayer participating in cutting, when an average thickness on the flank face (3) side is represented by A ?m and an average thickness on the rake face (2) side is represented by B ?m, A/B?0.95.
    Type: Application
    Filed: December 26, 2006
    Publication date: March 12, 2009
    Applicant: Sumitomo Electric Hardmetal Corp.
    Inventors: Naoya Omori, Yoshio Okada, Minoru Itoh, Susumu Okuno, Shinya Imamura
  • Patent number: 7498089
    Abstract: The present invention relates to a coated cutting tool equipped with a substrate and a coating formed on the substrate. The coating includes: a compound formed from elements Al and/or Cr and at least one element selected from a group consisting of carbon, nitrogen, oxygen, and boron; and chlorine.
    Type: Grant
    Filed: September 6, 2005
    Date of Patent: March 3, 2009
    Assignee: Sumitomo Electric Hardmetal Corp.
    Inventors: Naoya Omori, Shinya Imamura, Hideki Moriguchi, Haruyo Fukui, Makoto Setoyama
  • Publication number: 20090003944
    Abstract: An indexable insert (1) of the present invention includes a substrate (8) and a coating layer which includes inner layer and an outer layer. The inner layer includes an alumina layer or an alumna-containing layer serving as an outermost layer in contact with the outer layer, and the outer layer is composed of at least one metal selected from the group consisting of the periodic table group IVa elements, Va elements, and VIa elements, Al, and Si or a compound of at least one of the metals and at least one element selected from the group consisting of carbon, nitrogen, oxygen, and boron. In addition, the outer layer, in a portion involved in cutting, satisfies B/A?0.9 wherein A ?m is the average thickness on the flank face (3) side, and B ?m is the average thickness on the rake face (2) side.
    Type: Application
    Filed: October 13, 2006
    Publication date: January 1, 2009
    Applicant: Sumitomo Electric Hardmetal Corp.
    Inventors: Naoya Omori, Yoshio Okada, Minoru Itoh, Susumu Okuno, Shinya Imamura
  • Publication number: 20080292905
    Abstract: A surface-coated cutting tool comprising a substrate, and a coating formed thereon, characterized in that the coating includes a first coating containing TiCN and a second coating containing ?-type Al2O3, the first coating is interposed between the substrate and the second coating, and the second coating has compressive stress S1 on the rake face and tensile stress S2 on the flank face, with the compressive stress S1 and the tensile stress S2 being defined by the following expression; 441 MPa?|S1?S2|?3500 MPa . . . .
    Type: Application
    Filed: November 16, 2005
    Publication date: November 27, 2008
    Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Yoshio Okada, Naoya Omori, Minoru Itoh, Norihiro Takanashi, Shinya Imamura, Susumu Okuno
  • Publication number: 20080260477
    Abstract: A coated cutting insert according to the present invention includes a base layer formed on a substrate and an indicating layer formed on a part of the base layer. The indicating layer is formed on a flank face, on the base layer on the entire surface or a part of a region A2 except for a specific region A1, and on a rake face, on the base layer on the entire surface or a part of a region B2 except for a specific region B1. In the region A1 and the region B1, the base layer is exposed at the surface, and has compressive residual stress in one or both of the region A1 and the region B1.
    Type: Application
    Filed: March 22, 2006
    Publication date: October 23, 2008
    Inventors: Naoya Omori, Yoshio Okada, Minoru Itoh, Susumu Okuno, Shinya Imamura