Patents by Inventor Hirohisa Ishi
Hirohisa Ishi 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: 11666977Abstract: An insert may include a first surface, a second surface, a ridge line located at an intersection of the first surface and the second surface. The first surface may include a first corner, a first side and a second side. The ridge line may include a corner cutting edge located on the first corner, a first cutting edge located on the first side, and a second cutting edge located on the second side. The first surface may further include a first region located from the first cutting edge toward a midportion of the first surface, a second region located from the second cutting edge toward the midportion of the first surface, and a concave part located on at least one of the first region and the second region.Type: GrantFiled: April 7, 2022Date of Patent: June 6, 2023Assignee: KYOCERA CorporationInventors: Hirohisa Ishi, Shohei Mao, Kazuki Yamamichi
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Patent number: 11491562Abstract: A cutting tool may include a main body extended from a first end to a second end. The main body may be rotatable around a rotation axis. The main body may include a first cutting edge, a second cutting edge, a first flute and a second flute. The first flute may be extended from the first cutting edge toward the second end. The second flute may be extended from the second cutting edge toward the second end. The first flute may include a first hole located in the main body. The second flute may include a second hole located in the main body. The first hole may have a circular shape and the second hole may have a long narrow shape in a circumferential direction of the rotation axis in a cross section orthogonal to the rotation axis.Type: GrantFiled: October 2, 2018Date of Patent: November 8, 2022Assignee: KYOCERA CORPORATIONInventors: Hirohisa Ishi, Kento Iwasaki
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Publication number: 20220226913Abstract: An insert may include a first surface, a second surface, a ridge line located at an intersection of the first surface and the second surface. The first surface may include a first corner, a first side and a second side. The ridge line may include a corner cutting edge located on the first corner, a first cutting edge located on the first side, and a second cutting edge located on the second side. The first surface may further include a first region located from the first cutting edge toward a midportion of the first surface, a second region located from the second cutting edge toward the midportion of the first surface, and a concave part located on at least one of the first region and the second region.Type: ApplicationFiled: April 7, 2022Publication date: July 21, 2022Applicant: KYOCERA CorporationInventors: Hirohisa ISHI, Shohei MAO, Kazuki YAMAMICHI
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Patent number: 11364540Abstract: A method for manufacturing a tip for cutting tool use includes a shaping step of injecting a material into a mold to thereby form a molded body which becomes a tip for cutting tool use. The shaping step injects the material into the mold through a gate located on the inner side of a part corresponding to an intersecting ridge part formed by a major surface and an outer peripheral surface of the tip for cutting tool use.Type: GrantFiled: September 1, 2016Date of Patent: June 21, 2022Assignee: KYOCERA CorporationInventors: Hirohisa Ishi, Makoto Kimiyama, Yoshihiro Kouzen
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Patent number: 11325195Abstract: An insert may include a first surface, a second surface, a ridge line located at an intersection of the first surface and the second surface. The first surface may include a first corner, a first side and a second side. The ridge line may include a corner cutting edge located on the first corner, a first cutting edge located on the first side, and a second cutting edge located on the second side. The first surface may further include a first region located from the first cutting edge toward a midportion of the first surface, a second region located from the second cutting edge toward the midportion of the first surface, and a concave part located on at least one of the first region and the second region.Type: GrantFiled: August 23, 2018Date of Patent: May 10, 2022Assignee: KYOCERA CORPORATIONInventors: Hirohisa Ishi, Shohei Mao, Kazuki Yamamichi
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Patent number: 11207741Abstract: A cutting insert may include a first surface having a polygonal shape, a second surface, and a cutting edge located on a ridge line where the first surface intersects with the second surface. The first surface may include a first corner, a second corner, a third corner, a first side, and a second side. In a plan view of the first surface, the first side may have a straight line shape or a convex shape protruded outward relative to a first imaginary line connecting the first corner and the second corner, and the second side may have a concave shape recessed inward relative to a second imaginary line connecting the first corner and the third corner.Type: GrantFiled: July 23, 2018Date of Patent: December 28, 2021Assignee: KYOCERA CorporationInventors: Hirohisa Ishi, Kazuki Yamamichi, Shohei Mao
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Publication number: 20210370417Abstract: A cutting tool may include a main body extended from a first end to a second end. The main body may be rotatable around a rotation axis. The main body may include a first cutting edge, a second cutting edge, a first flute and a second flute. The first flute may be extended from the first cutting edge toward the second end. The second flute may be extended from the second cutting edge toward the second end. The first flute may include a first hole located in the main body. The second flute may include a second hole located in the main body. The first hole may have a circular shape and the second hole may have a long narrow shape in a circumferential direction of the rotation axis in a cross section orthogonal to the rotation axis.Type: ApplicationFiled: October 2, 2018Publication date: December 2, 2021Applicant: KYOCERA CorporationInventors: Hirohisa ISHI, Kento IWASAKI
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Patent number: 10987741Abstract: A cutting insert may include a first surface having a polygonal shape, a second surface, a third surface and a cutting edge. The first surface may include a first corner, a first side, a first inclined surface located along the first side, and a second inclined surface located along the second side. In a plan view of the first surface, a width of the first inclined surface in a direction orthogonal to the first side may become larger as approaching the second side. A width of the second inclined surface in a direction orthogonal to the second side may become larger as approaching the first side.Type: GrantFiled: July 24, 2018Date of Patent: April 27, 2021Assignee: KYOCERA CorporationInventors: Hirohisa Ishi, Kazuki Yamamichi, Shohei Mao
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Publication number: 20200361010Abstract: An insert may include a first surface, a second surface, a ridge line located at an intersection of the first surface and the second surface. The first surface may include a first corner, a first side and a second side. The ridge line may include a corner cutting edge located on the first corner, a first cutting edge located on the first side, and a second cutting edge located on the second side. The first surface may further include a first region located from the first cutting edge toward a midportion of the first surface, a second region located from the second cutting edge toward the midportion of the first surface, and a concave part located on at least one of the first region and the second region.Type: ApplicationFiled: August 23, 2018Publication date: November 19, 2020Applicant: KYOCERA CorporationInventors: Hirohisa ISHI, Shohei MAO, Kazuki YAMAMICHI
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Publication number: 20200206831Abstract: A cutting insert may include a first surface having a polygonal shape, a second surface, and a cutting edge located on a ridge line where the first surface intersects with the second surface. The first surface may include a first corner, a second corner, a third corner, a first side, and a second side. In a plan view of the first surface, the first side may have a straight line shape or a convex shape protruded outward relative to a first imaginary line connecting the first corner and the second corner, and the second side may have a concave shape recessed inward relative to a second imaginary line connecting the first corner and the third corner.Type: ApplicationFiled: July 23, 2018Publication date: July 2, 2020Inventors: Hirohisa ISHI, Kazuki YAMAMICHI, Shohei MAO
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Publication number: 20200171584Abstract: A cutting insert may include a first surface having a polygonal shape, a second surface, a third surface and a cutting edge. The first surface may include a first corner, a first side, a first inclined surface located along the first side, and a second inclined surface located along the second side. In a plan view of the first surface, a width of the first inclined surface in a direction orthogonal to the first side may become larger as approaching the second side. A width of the second inclined surface in a direction orthogonal to the second side may become larger as approaching the first side.Type: ApplicationFiled: July 24, 2018Publication date: June 4, 2020Inventors: Hirohisa ISHI, Kazuki YAMAMICHI, Shohei MAO
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Patent number: 10668540Abstract: In an embodiment, an insert includes an upper surface including a corner part, a lower surface, a side surface, and a cutting edge. The side surface is between the upper surface and the lower surface. The cutting edge is at least at a part of a first region in which the upper surface intersects with the side surface. The cutting edge includes a first cutting edge at the corner part, a second cutting edge, a third cutting edge, and a fourth cutting edge. The second cutting edge is next to the first cutting edge, and also next to the third cutting edge. The third and fourth cutting edges: each have a convex curvilinear shape with first and second radii of curvature, respectively; and extend downward and upward, respectively, in a side view as going farther from the second cutting edge. The second radius smaller than the first radius.Type: GrantFiled: February 26, 2016Date of Patent: June 2, 2020Assignee: KYOCERA CORPORATIONInventor: Hirohisa Ishi
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Publication number: 20200130072Abstract: A cutting insert of one aspect includes a first face, a second face, and a third face. The first face includes a first side, a second side, and a first corner. The first face includes a land face connected to the third face. The land face includes a first land face connected to the first corner, a second land face, and a third land face. The first land face includes a first region connected to the second land face and a second region connected to the third land face. When the first face is viewed from the front, a second width of the second region is larger than a first width of the first region in a front view of the first face.Type: ApplicationFiled: October 29, 2019Publication date: April 30, 2020Applicant: KYOCERA CorporationInventor: Hirohisa ISHI
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Patent number: 10632540Abstract: A cutting insert in the present disclosure includes an upper surface, a lower surface, a side surface, and an edge. The upper surface includes a first corner part and a second corner part. The edge is located in a region which is located between the first corner part and the second corner part. The edge includes a first edge located at a side of the first corner part, a second edge located at a side of the second corner part, and a third edge located between the first edge and the second edge. The edge has a curvilinear shape being recessed toward the lower surface in a side view. Each of a radius of curvature R1 of the first edge and a radius of curvature R2 of the second edge is smaller than a radius of curvature R3 of the third edge in a side view.Type: GrantFiled: November 8, 2016Date of Patent: April 28, 2020Assignee: KYOCERA CORPORATIONInventor: Hirohisa Ishi
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Patent number: 10549358Abstract: An insert according to an embodiment includes an upper surface including a corner part, a lower surface, a side surface, and a cutting edge. The cutting edge includes a first cutting edge located at the corner part, a second cutting edge adjacent to the first cutting edge, a third cutting edge adjacent to the second cutting edge, and a fourth cutting edge adjacent to the third cutting edge. Each of the third cutting edge and the fourth cutting edge has a concave curvilinear shape extending downward in a side view. A radius of curvature of the fourth cutting edge is smaller than a radius of curvature of the third cutting edge.Type: GrantFiled: February 26, 2016Date of Patent: February 4, 2020Assignee: KYOCERA CORPORATIONInventor: Hirohisa Ishi
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Patent number: 10486247Abstract: In a cutting insert according to an embodiment of the present invention, an upper surface sequentially includes a first rake surface and a second rake surface. The first rake surface being inclined toward the lower surface as going inward from the cutting edge at a first rake angle on a basis of a perpendicular plane perpendicular to a central axis extending between the upper surface and a lower surface. The second rake surface is located more inward than the first rake surface and is inclined toward the lower surface at a second rake angle different from the first rake angle on the basis of the perpendicular plane. An intersecting part of the first rake surface and the second rake surface includes a protruded part located at a highest position in a region of the intersecting part along the second side surface. A cutting tool with the cutting insert, and a method of producing a machined product by using the cutting tool are also provided.Type: GrantFiled: January 2, 2018Date of Patent: November 26, 2019Assignee: KYOCERA CORPORATIONInventor: Hirohisa Ishi
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Patent number: 10406610Abstract: A cutting insert (1) according to an embodiment has a lower surface (2), an upper surface (3), a side surface (4) disposed between the lower surface (2) and the upper surface (3), a pair of corner cutting edges (5) located along an intersection of the upper surface (3) and the side surface (4), and a major cutting edge (6) located between the pair of corner cutting edges (5). The major cutting edge (6) has a downwardly dented curvilinear part (61) and a pair of straight parts (62) respectively extending from the curvilinear part (61) toward the pair of corner cutting edges (5) in a side view. A portion (6p) of the curvilinear part (61) located lowermost is close to one corner cutting edge (5b) in the side view.Type: GrantFiled: March 7, 2018Date of Patent: September 10, 2019Assignee: KYOCERA CORPORATIONInventor: Hirohisa Ishi
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Patent number: 10213849Abstract: A cutting insert according to an embodiment of the present invention has a cutting edge having a first corner cutting edge, a flat cutting edge, a connecting edge, a major cutting edge, and a second corner cutting edge in the order named. The major cutting edge has an upwardly protruding curvilinear portion, a first straight line portion extending from the curvilinear portion toward the connecting edge, and a second straight line portion extending from the curvilinear portion toward the second corner cutting edge. The flat cutting edge and the major cutting edge have a straight line shape, and the connecting edge has an outwardly protruding curvilinear shape in a top view. The flat cutting edge, the connecting edge, and the first straight line portion are located on a straight line in a side view.Type: GrantFiled: January 31, 2018Date of Patent: February 26, 2019Assignee: KYOCERA CorporationInventor: Hirohisa Ishi
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Patent number: 10124426Abstract: A cutting insert according to an embodiment has a polygonal shaped upper surface, a lower surface, a side surface, and a cutting edge. The cutting edge has an arc-shaped first corner edge, an arc-shaped second corner edge, and a wiper edge located between the first corner edge and the second corner edge. The wiper edge has an arc-shaped first wiper edge and an arc-shaped second wiper edge located closer to the second corner edge than the first wiper edge. R0<R1<R2 is satisfied wherein R1 is a radius of curvature of the first wiper edge, R2 is a radius of curvature of the second wiper edge, and R0 is a radius of curvature of each of the corner edges in a top view.Type: GrantFiled: December 29, 2017Date of Patent: November 13, 2018Assignee: KYOCERA CorporationInventors: Hirohisa Ishi, Yoshihito Ikeda
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Publication number: 20180318936Abstract: A cutting insert in the present disclosure includes an upper surface, a lower surface, a side surface, and an edge. The upper surface includes a first corner part and a second corner part. The edge is located in a region which is located between the first corner part and the second corner part. The edge includes a first edge located at a side of the first corner part, a second edge located at a side of the second corner part, and a third edge located between the first edge and the second edge. The edge has a curvilinear shape being recessed toward the lower surface in a side view. Each of a radius of curvature R1 of the first edge and a radius of curvature R2 of the second edge is smaller than a radius of curvature R3 of the third edge in a side view.Type: ApplicationFiled: November 8, 2016Publication date: November 8, 2018Inventor: Hirohisa ISHI