Patents by Inventor Naoto Nishiya
Naoto Nishiya 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).
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Patent number: 9089908Abstract: As viewed from a side opposing a bottom face (6) of an insert attachment seat, an angle (?) between first and second restraint wall faces (7a) and (7b) rising from the bottom face (6) is smaller than an angle (?) between two peripheral faces of a cutting insert contacting them respectively. A first peripheral face of the cutting insert contacts the first restraint wall face (7a) in a substantially parallel posture with the extending direction of the first restraint wall face (7a), while the second peripheral face contacts the second restraint wall face (7b) in an end portion of the second restraint wall face (7b).Type: GrantFiled: May 24, 2012Date of Patent: July 28, 2015Assignee: Tungaloy CorprationInventors: Kazuyuki Uno, Naoto Nishiya
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Patent number: 8523498Abstract: A cutting insert includes a cutting edge formed at an intersection of a rake face formed on a first surface and a relief face with a positive relief angle. The relief face includes a major relief face located adjacent to a major cutting edge, a first minor relief face located adjacent to the first minor cutting edge, and an intermediate relief face located adjacent to the intermediate cutting edge and extending between the major relief face and the first minor relief face. The intermediate relief face includes a protruding curved relief face extending from the first surface. An intersection of the curved relief face and the rake face has a predetermined radius of curvature and has substantially the same shape as that of an intersection of the curved relief face and a second surface.Type: GrantFiled: December 15, 2011Date of Patent: September 3, 2013Assignee: Tungaloy CorporationInventors: Kazuyuki Uno, Naoto Nishiya
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Patent number: 8523497Abstract: A pair of sub-flank surfaces is formed at a vertex angle portion of an insert body having a substantially polygonal, plate-like shape, and between the sub flank surfaces, a vertex flank surface at a vertical angle portion is formed substantially in a protrusive, curved shape, and is smoothly connected to the sub-flank surfaces in a tangential direction. The vertex flank surface at the vertex angle portion is extended across the entire thickness of the insert body, and boundary lines, between the vertex flank surface at the vertex angle portion and a pair of minor cutting edges, are parallel to each other. A second curved ridge line, which is formed between (i) the flank surface and (ii) the rake surface, and a first curved ridge line, which is formed between (i) the flank surface and (ii) the seat surface, have approximately same shape.Type: GrantFiled: December 15, 2011Date of Patent: September 3, 2013Assignee: Tungaloy CorporationInventors: Kazuyuki Uno, Naoto Nishiya
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Patent number: 8454276Abstract: A cutting insert has a substantially polygonal shape, and a groove formed in a corner portion of one polygonal surface, and at an intersecting portion between a leading cutting edge and a peripheral cutting edge formed at intersecting portions of side surfaces adjacent to each other across the corner portion, a minor cutting edge is formed. Of the groove, in an area associated with the leading cutting edge and the minor cutting edge, a rake face including a downward inclined surface is formed. A first angle between a direction of maximum inclination of the downward inclined surface and the leading cutting edge is larger than a second angle between the direction of maximum inclination and the minor cutting edge.Type: GrantFiled: April 24, 2012Date of Patent: June 4, 2013Assignee: Tungaloy CorporationInventors: Kazuyuki Uno, Naoto Nishiya, Kouichi Furuya
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Publication number: 20120230790Abstract: As viewed from a side opposing a bottom face (6) of an insert attachment seat, an angle (?) between first and second restraint wall faces (7a) and (7b) rising from the bottom face (6) is smaller than an angle (?) between two peripheral faces of a cutting insert contacting them respectively. A first peripheral face of the cutting insert contacts the first restraint wall face (7a) in a substantially parallel posture with the extending direction of the first restraint wall face (7a), while the second peripheral face contacts the second restraint wall face (7b) in an end portion of the second restraint wall face (7b).Type: ApplicationFiled: May 24, 2012Publication date: September 13, 2012Applicant: Tungaloy CorporationInventors: Kazuyuki Uno, Naoto Nishiya
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Publication number: 20120207554Abstract: A cutting insert has a substantially polygonal shape, and a groove formed in a corner portion of one polygonal surface, and at an intersecting portion between a leading cutting edge and a peripheral cutting edge formed at intersecting portions of side surfaces adjacent to each other across the corner portion, a minor cutting edge is formed. Of the groove, in an area associated with the leading cutting edge and the minor cutting edge, a rake face including a downward inclined surface is formed. A first angle between a direction of maximum inclination of the downward inclined surface and the leading cutting edge is larger than a second angle between the direction of maximum inclination and the minor cutting edge.Type: ApplicationFiled: April 24, 2012Publication date: August 16, 2012Applicant: Tungaloy CorporationInventors: Kazuyuki Uno, Naoto Nishiya, Kouichi Furuya
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Publication number: 20120087748Abstract: A pair of sub-flank surfaces is formed at a vertex angle portion of an insert body having a substantially polygonal, plate-like shape, and between the sub flank surfaces, a vertex flank surface at a vertical angle portion is formed substantially in a protrusive, curved shape, and is smoothly connected to the sub-flank surfaces in a tangential direction. The vertex flank surface at the vertex angle portion is extended across the entire thickness of the insert body, and boundary lines, between the vertex flank surface at the vertex angle portion and a pair of minor cutting edges, are parallel to each other. A second curved ridge line, which is formed between (i) the flank surface and (ii) the rake surface, and a first curved ridge line, which is formed between (i) the flank surface and (ii) the seat surface, have approximately same shape.Type: ApplicationFiled: December 15, 2011Publication date: April 12, 2012Applicant: Tungaloy CorporationInventors: Kazuyuki Uno, Naoto Nishiya
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Publication number: 20120087749Abstract: A cutting insert includes a cutting edge formed at an intersection of a rake face formed on a first surface and a relief face with a positive relief angle. The relief face includes a major relief face located adjacent to a major cutting edge, a first minor relief face located adjacent to the first minor cutting edge, and an intermediate relief face located adjacent to the intermediate cutting edge and extending between the major relief face and the first minor relief face. The intermediate relief face includes a protruding curved relief face extending from the first surface. An intersection of the curved relief face and the rake face has a predetermined radius of curvature and has substantially the same shape as that of an intersection of the curved relief face and a second surface.Type: ApplicationFiled: December 15, 2011Publication date: April 12, 2012Applicant: Tungaloy CorporationInventors: Kazuyuki UNO, Naoto NISHIYA