Including Tool Having Plural Alternatively Usable Cutting Edges Patents (Class 407/113)
  • Patent number: 10906107
    Abstract: A single-sided four-way indexable cutting insert includes a positive basic shape, a rake surface, a peripheral surface including four side abutment surfaces, a base bearing surface and a screw hole connecting the rake and base bearing surfaces. The insert has an imaginary square frustum which defines a square base containing the cutting insert's base bearing surface, and further defines four isosceles trapezoid side surfaces respectively containing the cutting insert's four side abutment surfaces. A material volume VF of the cutting insert and a void volume VS of the insert fulfill the condition VS/VF?0.25.
    Type: Grant
    Filed: April 22, 2020
    Date of Patent: February 2, 2021
    Assignee: Iscar, Ltd.
    Inventor: Assaf Ballas
  • Patent number: 10882115
    Abstract: A cutting insert is provided, comprising a top surface, a bottom surface, a plurality of side surfaces spanning therebetween, and a cutting edge formed at an intersection of the side surface and a forwardly-disposed portion of the top the surface. It further comprises a cooling cavity projecting into the insert, a top end thereof being disposed further forwardly than an open bottom end thereof. The cooling cavity defines at least one molding axis such that a solid element having the shape of the cooling cavity and completely inserted therein may be retracted intact therefrom along a linear path parallel to the molding axis. A circumscribing portion is formed on the side surfaces encircling the cutting insert. The circumscribing portion is formed parallel to the molding axis and has a non-zero height along its entire extent. The cutting insert does not extend beyond the circumscribing portion.
    Type: Grant
    Filed: October 15, 2018
    Date of Patent: January 5, 2021
    Assignee: NO SCREW LTD.
    Inventor: Gershon Harif
  • Patent number: 10850335
    Abstract: This cutting insert has: as cutting edges, arcuate cutting edges that are of an arc shape protruding toward an outer circumference side of a distal end. A chisel part is formed at an intersecting ridge line part between the flank faces of the pair of arcuate cutting edges. A round honing is formed on the cutting edge tip of the arcuate cutting edge at least in a range where a radial angle is 30° or less. A curvature radius of the round honing in a cross section perpendicular to the edge length direction of the arcuate cutting edge is 20 to 40 ?m. A chisel angle formed between the distal end part of the arcuate cutting edge and a chisel edge of the chisel part is 150° to 170° as seen in an insert front view.
    Type: Grant
    Filed: October 19, 2017
    Date of Patent: December 1, 2020
    Assignee: MITSUBISHI HITACHI TOOL ENGINEERING, LTD.
    Inventors: Yasuhiro Kiuchi, Yoshiyuki Kobayashi, Takao Nakamigawa
  • Patent number: 10835961
    Abstract: A tangential cutting insert for a turning tool is described, which comprises a first tangential cutting insert side and a second tangential cutting insert side, wherein one of the tangential cutting insert sides is assigned more than two cutting edges, and the cutting edges are arranged in a star shape about a tangential cutting insert center axis. The tangential cutting insert is produced completely from cubic crystalline boron nitride, polycrystalline cubic boron nitride, polycrystalline diamond, or ceramic. In addition, a cutting tool with such a tangential cutting insert is presented. A method for producing a tangential cutting insert is also explained.
    Type: Grant
    Filed: August 31, 2018
    Date of Patent: November 17, 2020
    Assignee: KENNAMETAL INC.
    Inventors: Raouf Ben Amor, Igor Kaufmann
  • Patent number: 10799961
    Abstract: A cutting insert includes an insert body; a pair of first surfaces; a through hole extending in a direction of a first axis; a second surface which connects the first surfaces and faces a direction of a second axis orthogonal to the first axis; a third surface which is disposed on the circumferential surface and is connected to the first surfaces and the second surface and faces a direction of a third axis; and cutting edges located at an intersection ridge line between the first surface and the second surface and at an intersection ridge line between the second surface and the third surface. The second surface has a projection part protruding in the direction of the second axis, and as viewed from the direction of the second axis, the through hole and the projection part are disposed to overlap each other.
    Type: Grant
    Filed: September 21, 2018
    Date of Patent: October 13, 2020
    Assignee: MITSUBISHI MATERIALS CORPORATION
    Inventors: Jun Kitajima, Masashi Kanbara, Shigeru Ishimori, Chinami Sakamoto
  • Patent number: 10744576
    Abstract: A cutting insert for a milling tool, having a first side, a second side which is identical to the first side and a circumferential surface which extends between the first and the second sides, with a bore which extends along a bore axis. The cutting insert is 120° rotationally symmetrical with respect to the bore axis and includes on each of the first side and the second side three identically formed cutting regions, respectively, which are situated at a transition between the first side and the circumferential surface or at a transition between the second side and the circumferential surface, respectively.
    Type: Grant
    Filed: November 20, 2018
    Date of Patent: August 18, 2020
    Assignee: Hartmetall-Werkzeugfabrik Paul Hom GmbH
    Inventor: Christian Stark
  • Patent number: 10689977
    Abstract: An earth-boring drilling tool comprises a cutting element. The cutting element comprises a substrate, a diamond table, and at least one sensing element formed from a doped diamond material disposed at least partially within the diamond table. A method for determining an at-bit measurement for an earth-boring drill bit comprises receiving an electrical signal generated within a doped diamond material disposed within a diamond table of a cutting element of the earth-boring drill bit, and correlating the electrical signal with at least one parameter during a drilling operation.
    Type: Grant
    Filed: July 10, 2018
    Date of Patent: June 23, 2020
    Assignees: Baker Hughes, a GE company, LLC, Element Six Limited
    Inventors: Danny E. Scott, Timothy Peter Mollart, John Robert Brandon
  • Patent number: 10675695
    Abstract: A saw tooth mountable to a circular saw disc and including a body defining rear and front ends. In operation, the front end leads the rear end as the saw disc turns. A cutting tip extends from the body and defines a cutting tip base adjacent to the body and an opposed cutting edge. The cutting tip base is rearwardly provided relative to the cutting edge. An elongated gullet extends along the cutting tip substantially adjacent to the cutting tip base and defines opposed gullet first and second ends and a gullet longitudinal axis therebetween. A gullet nadir line extends longitudinally between the gullet first and second ends and joins locations along the gullet that are closest to the rear end at all longitudinal positions along the gullet. The gullet nadir line is closer to the rear end at the gullet first end than at the gullet second end.
    Type: Grant
    Filed: April 1, 2016
    Date of Patent: June 9, 2020
    Inventor: Stephen MacLennan
  • Patent number: 10632547
    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: Grant
    Filed: March 1, 2017
    Date of Patent: April 28, 2020
    Assignee: Sumitomo Electric Hardmetal Corp.
    Inventor: Yuta Morisaki
  • Patent number: 10625348
    Abstract: A coated cutting tool comprising a substrate and a coating layer formed on a surface of the substrate, the coating layer including at least one ?-type aluminum oxide layer, wherein, in the ?-type aluminum oxide layer, a texture coefficient TC (2,1,10) of a (2,1,10) plane is 1.4 or more. TC ? ( 2 , 1 , 10 ) = I ? ( 2 , 1 , 10 ) I 0 ? ( 2 , 1 , 10 ) ? { 1 8 ? ? I ? ( h , k , l ) I 0 ? ( h , k , l ) } - 1 ( 1 ) (In formula (1), I (h,k,l) denotes a peak intensity for an (h,k,l) plane in X-ray diffraction of the ?-type aluminum oxide layer, I0 (h,k,l) denotes a standard diffraction intensity for an (h,k,l) plane which is indicated on a JCPDS Card No. 10-0173 for ?-type aluminum oxide, and (h,k,l) refers to eight crystal planes of (0,1,2), (1,0,4), (1,1,0), (1,1,3), (0,2,4), (1,1,6), (2,1,4) and (2,1,10).
    Type: Grant
    Filed: October 30, 2017
    Date of Patent: April 21, 2020
    Assignee: TUNGALOY CORPORATION
    Inventor: Hiroyuki Satoh
  • Patent number: 10625352
    Abstract: A cutting insert mounted on a rotating tool including a body that rotates about a predetermined rotational axis. The cutting insert includes an upper surface, a lower surface and a peripheral side surface. The cutting insert further includes an inner cutting edge and a corner cutting edge. A top part, which has the maximum distance from the lower surface, is located on the corner cutting edge.
    Type: Grant
    Filed: September 17, 2018
    Date of Patent: April 21, 2020
    Assignee: TUNGALOY CORPORATION
    Inventors: Yuki Oikawa, Yuma Kondou
  • Patent number: 10612133
    Abstract: A coated cutting tool comprising a substrate and a coating layer formed on a surface of the substrate, the coating layer including at least one ?-type aluminum oxide layer, wherein, in the ?-type aluminum oxide layer, a texture coefficient TC (1,0,16) of a (1,0,16) plane is 1.4 or more. TC ? ( 1 , 0 , 16 ) = I ? ( 1 , 0 , 16 ) I 0 ? ( 1 , 0 , 16 ) ? { 1 8 ? ? I ? ( h , k , l ) I 0 ? ( h , k , l ) } - 1 ( 1 ) (In formula (1), I (h,k,l) denotes a peak intensity for an (h,k,l) plane in X-ray diffraction of the ?-type aluminum oxide layer, I0 (h,k,l) denotes a standard diffraction intensity for an (h,k,l) plane which is indicated on a JCPDS Card No. 10-0173 for ?-type aluminum oxide, and (h,k,l) refers to eight crystal planes of (0,1,2), (1,0,4), (1,1,0), (1,1,3), (0,2,4), (1,1,6), (2,1,4) and (1,0,16).
    Type: Grant
    Filed: October 12, 2017
    Date of Patent: April 7, 2020
    Assignee: TUNGALOY CORPORATION
    Inventor: Hiroyuki Satoh
  • Patent number: 10612134
    Abstract: A coated cutting tool comprising a substrate and a coating layer formed on a surface of the substrate, the coating layer including at least one ?-type aluminum oxide layer, wherein, in the ?-type aluminum oxide layer, a texture coefficient TC (1,2,11) of a (1,2,11) plane is 1.4 or more. TC ? ( 1 , 2 , 11 ) = I ? ( 1 , 2 , 11 ) I 0 ? ( 1 , 2 , 11 ) ? { 1 8 ? ? I ? ( h , k , l ) I 0 ? ( h , k , l ) } - 1 ( 1 ) (In formula (1), I (h,k,l) denotes a peak intensity for an (h,k,l) plane in X-ray diffraction of the ?-type aluminum oxide layer, I0 (h,k,l) denotes a standard diffraction intensity for an (h,k,l) plane which is indicated on a JCPDS Card No. 10-0173 for ?-type aluminum oxide, and (h,k,l) refers to eight crystal planes of (0,1,2), (1,0,4), (1,1,0), (1,1,3), (0,2,4), (1,1,6), (2,1,4) and (1,2,11).
    Type: Grant
    Filed: October 12, 2017
    Date of Patent: April 7, 2020
    Assignee: TUNGALOY CORPORATION
    Inventor: Hiroyuki Satoh
  • Patent number: 10598579
    Abstract: A cutting insert for cutting, milling or drilling of metal includes a sensor for detecting a predetermined wear of the cutting insert caused by operation thereof on a metal work piece, wherein the sensor includes at least two contact regions through which the sensor is connectable to external measuring circuitry. The sensor has at least two leads, which are connected to a respective of the at least two contact regions, wherein each lead presents a respective free end positioned such that, upon the predetermined wear caused by the operation of the cutting insert on a metal work piece, the free ends will be connected to each other by the metal work piece or by a chip resulting from the operation of the cutting insert on the metal work piece.
    Type: Grant
    Filed: May 31, 2016
    Date of Patent: March 24, 2020
    Assignee: SANDVIK INTELLECTUAL PROPERTY AB
    Inventors: Vahid Kalhori, Carl Bjormander, Conny Lundgren
  • Patent number: 10583502
    Abstract: Provided is a cutting insert capable of suppressing edge fracture when a work having high hardness is machined. A cutting insert includes two end surfaces having a plurality of corner parts and opposed to each other, a peripheral side surface extending between the two end surfaces, and a cutting edge formed at an intersecting edge between at least one of the two end surfaces and the peripheral side surface. The cutting edge has at least a first corner edge, a second corner edge, a major cutting edge, and an end cutting edge. The end cutting edge has a circular-arc shape, which projects outward, as viewed from the side of the end surface. The end cutting edge has a width which is from 15% to 50% of the width of the cutting insert. The end cutting edge has an arc radius which is from ? to 1/1 of the width of the cutting insert.
    Type: Grant
    Filed: July 28, 2018
    Date of Patent: March 10, 2020
    Assignee: TUNGALOY CORPORATION
    Inventors: Hikaru Shiroma, Yosuke Yamada
  • Patent number: 10576547
    Abstract: A cutting insert according to an aspect includes a top surface and a side surface. At least a part of a ridge line where the top surface and the side surface intersects is a cutting edge. The cutting edge includes a first portion located at a corner portion, a second portion adjacent to the first portion, a third portion close to the second portion, a fourth portion close to the third portion, and a fifth portion adjacent to the fourth portion. When viewed from directly above, a curvature radius of the second portion is less than a curvature radius of the first portion, a curvature radius of the third portion is greater than the curvature radius of the first portion, and a curvature radius of the fourth portion is less than the curvature radius of the third portion.
    Type: Grant
    Filed: November 28, 2016
    Date of Patent: March 3, 2020
    Assignee: KYOCERA Corporation
    Inventor: Yoshihito Ikeda
  • Patent number: 10569335
    Abstract: The invention discloses a wheel machining tool. A rough turning tool and a finish turning tool are respectively arranged on two sides of a tool head, the primary declination angle ? of the rough turning tool is set to 90° to 120°, and the primary declination angle ? of the finish turning tool is set to 85° to 95°; the axial height difference between the rough turning tool and the finish turning tool is set to 0.2-0.5 mm; the distance c between the rough turning tool and the tool head is set to 5-8 mm, and the distance b between the finish turning tool and the tool head is set to 3-5 mm. The rake angle ? of the rough turning tool is set to 12°-15°, the rake angle ? of the finish turning tool is set to 14°-17°.
    Type: Grant
    Filed: July 11, 2018
    Date of Patent: February 25, 2020
    Assignee: CITIC DICASTAL CO., LTD
    Inventors: Minghua Liu, Yingjun Zhou, Weidong Liu, Xiao Liu, Xiaoguang Huang, Jiandong Guo, Huiying Liu, Yuexin Lu, Zhiyuan Yu, Ruixiao Zhou
  • Patent number: 10549358
    Abstract: 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: Grant
    Filed: February 26, 2016
    Date of Patent: February 4, 2020
    Assignee: KYOCERA CORPORATION
    Inventor: Hirohisa Ishi
  • Patent number: 10549360
    Abstract: An indexable cutting insert has a first corner edge forming a front tip of a cutting edge portion configured to project furthest in the direction of an axis of rotation of an end mill tool receiving the insert. A major cutting edge is descending to come closer to the lower surface of the insert along its extension away from the first corner edge. The minor cutting edge extends from the first corner edge while descending from a point of the cutting edge portion most distant to the lower surface all the way to an inner corner of the insert and has a length of 80%-95% of the length of the major cutting edge including a second corner edge in a side elevation view of the cutting insert.
    Type: Grant
    Filed: January 13, 2017
    Date of Patent: February 4, 2020
    Assignee: PRAMET TOOLS, S.R.O.
    Inventors: Jan Vlcek, Jan Bittner
  • Patent number: 10549352
    Abstract: Cutting tool systems including a tool holder and tangential cutting inserts are disclosed. The tangential cutting inserts have indexable cutting edges that may be sinusoidal-shaped and helical-shaped. The tangential cutting inserts have integrated fan and base portions. The tool holders comprise a plurality of insert pockets structured and arranged to receive the indexable tangential cutting inserts. The cutting tool systems provide cutting tools with effectively longer sinusoidal and helical cutting edges at their cutting rake faces and a strong support when seating in insert-receiving pockets on the tool holder.
    Type: Grant
    Filed: August 7, 2018
    Date of Patent: February 4, 2020
    Assignee: KENNAMETAL INC.
    Inventors: Xiangdong D. Fang, Jean-Luc D. Dufour, David J. Wills
  • Patent number: 10531594
    Abstract: A liquid cooled coldplate has a tub with an inlet port and an outlet port and a plurality of pockets recessed within a top surface of the tub. Each pocket has a peripheral opening and a ledge, the ledge disposed inwardly and downwardly from the peripheral opening. The inlet port and outlet port are in fluid communication with the pocket via an inlet slot and an outlet slot. A plurality of cooling plates are each received by a pocket and recessed within the pocket. Each cooling plate comprises an electronics side for receiving electronics and enhanced side for cooling the cooling plate. The enhanced side of the cooling plate comprises a plurality of pins formed by micro deformation technology. The tub may be formed by extrusion.
    Type: Grant
    Filed: October 17, 2017
    Date of Patent: January 7, 2020
    Assignee: Wieland Microcool, LLC
    Inventors: Matthew A. Reeves, Robert Scott Holland, Sy-Jenq Loong
  • Patent number: 10525540
    Abstract: The present invention provides a cutting insert in which suitable honing is formed on a cutting edge. The cutting insert is provided with: two end surfaces opposing each other; a peripheral side surface extending between the two end surfaces; and a cutting edge formed on an intersecting ridge between at least one of the two end surfaces and the peripheral side surface. The cutting edge at least includes a major cutting edge and an inner cutting edge. Honing is provided on the major cutting edge and the inner cutting edge. A width of second honing of the inner cutting edge is narrower than a width of first honing of the major cutting edge, as viewed from a side of the end surfaces.
    Type: Grant
    Filed: July 18, 2018
    Date of Patent: January 7, 2020
    Assignee: TUNGALOY CORPORATION
    Inventor: Hikaru Shiroma
  • Patent number: 10525537
    Abstract: A rotary cutting tool having a disk-shaped cutting body with a plurality of identical insert receiving pockets, and an equal number of indexable cutting inserts removably retained therein, having opposing upper and lower surfaces and opposing first and second insert end surfaces. First and second cutting edges are formed at the intersection of the upper surface and the first and second insert end surfaces, respectively. Circumferentially adjacent cutting inserts have a different one of their first and second insert end surfaces in contact with an insert receiving pocket back wall. First and second planes are equidistantly offset from opposite sides of the cutting body, the first plane only intersecting the first cutting edge of every circumferentially alternate cutting insert and none of the second cutting edges, and the second plane only intersecting the second cutting edge of every circumferentially alternate cutting insert and none of the first cutting edges.
    Type: Grant
    Filed: November 17, 2017
    Date of Patent: January 7, 2020
    Assignee: ISCAR LTD.
    Inventor: Gil Hecht
  • Patent number: 10520893
    Abstract: A decorative article has a substrate of which at least part of the surface is configured with Ti or stainless steel; and a coating made of primarily TiC and disposed on the substrate. The coating has at least a first region, and a second region disposed closer to the substrate than the first region. The elastic modulus of the second region is greater than the elastic modulus of the first region.
    Type: Grant
    Filed: March 24, 2017
    Date of Patent: December 31, 2019
    Assignee: Seiko Epson Corporation
    Inventors: Yuzuru Tsukamoto, Atsushi Kawakami
  • Patent number: 10512977
    Abstract: A cutting insert for milling square shoulders has side surfaces each provided with a major cutting edge connected to an associated wiper edge on an adjacent side surface of the insert. The side surface provided with the major cutting edge has two generally flat and non-coplanar support surfaces arranged consecutively with respect to a direction of the extension of the major cutting edge and make different angles with a normal to a bottom surface of the insert. A border forming a limit of the support surfaces most distant to the bottom surface is inclined with respect to the bottom surface so that the distance of this border to the bottom surface increases in a direction of extension of the cutting edge towards the wiper edge.
    Type: Grant
    Filed: November 2, 2015
    Date of Patent: December 24, 2019
    Assignee: SANDVIK INTELLECTUAL PROPERTY AB
    Inventor: Tomas Ahnfeldt
  • Patent number: 10507535
    Abstract: A cutting insert includes a rake face, a flank surface, and a cutting edge, the cutting edge includes a bottom cutting edge that is positioned at a front end in a central axis direction and forms a convex arc shape and an outer peripheral cutting edge aligned with a radial-direction outer end of the bottom cutting edge and forms a convex arc shape of which a curvature radius is larger than that of the bottom cutting edge, an angle formed between a tangent line to a boundary point between the bottom cutting edge and the outer peripheral cutting edge and the central axis is less than 45°, a curvature radius R1 of the bottom cutting edge is 0.3 to 10 mm, and a ratio (R2/R1) of a curvature radius R2 of the outer peripheral cutting edge to the curvature radius R1 of the bottom cutting edge is 3.6 to 333.
    Type: Grant
    Filed: July 24, 2017
    Date of Patent: December 17, 2019
    Assignee: Mitsubishi Hitachi Tool Engineering, Ltd.
    Inventor: Yoshiyuki Kobayashi
  • Patent number: 10493540
    Abstract: A minor cutting edge has a first minor cutting edge and a second minor cutting edge that extends inward of the insert in a direction of an insert short side face axial line, as the second minor cutting edge extends from the first minor cutting edge in a direction of an insert major face axial line. A flank face of the second minor cutting edge is inclined outward of the insert in the direction of the insert short side face axial line, as the flank face extends from the second minor cutting edge in the direction of an insert long side face axial line, and is inclined outward of the insert in the direction of the insert short side face axial line, as the flank face extends from a major face adjacent to the flank face in the direction of the insert major face axial line.
    Type: Grant
    Filed: September 15, 2016
    Date of Patent: December 3, 2019
    Assignee: MITSUBISHI MATERIALS CORPORATION
    Inventors: Jun Kitajima, Toshimitsu Furuki, Shigeru Ishimori, Kiichi Yamazaki, Takayuki Hagiwara
  • Patent number: 10486247
    Abstract: 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: Grant
    Filed: January 2, 2018
    Date of Patent: November 26, 2019
    Assignee: KYOCERA CORPORATION
    Inventor: Hirohisa Ishi
  • Patent number: 10478901
    Abstract: A cutting insert of the present disclosure includes a first surface, a second surface, and a cutting edge. The first surface includes a corner part, and a first side and a second side each extending from the corner part. The second surface connects to the first surface. The cutting edge is located at a region where the first surface intersects with the second surface. The cutting edge includes a first cutting edge located at the first side, a second cutting edge located at the second side, and a third cutting edge located at the corner part. The first cutting edge and the third cutting edge are provided with a honing. A honing width of a side of the second cutting edge in the third cutting edge decreases as going away from the first cutting edge and then approaching the second cutting edge.
    Type: Grant
    Filed: October 26, 2016
    Date of Patent: November 19, 2019
    Assignee: KYOCERA CORPORATION
    Inventors: Shin Deguchi, Masahiro Yamamoto
  • Patent number: 10464145
    Abstract: The technical objective of the present invention is to provide a cutting insert that has an improved fastening property with a cutting tool, thereby preventing reduction of the service life. To this end, the cutting insert according to the present invention has three corners along the circumference thereof; an upper main cutting edge, which is formed on the edge between the upper surface and the first side surface, and an upper sub cutting edge, which is formed on the edge between the upper surface and the second side surface, are continuously disposed between respective corners; the lower surface has the same shape as that of the upper surface; and the angle defined between the upper main cutting edge and the upper sub cutting edge, which are placed on both sides with reference to each corner, is larger than or equal to 85° and is smaller than 90°.
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: November 5, 2019
    Assignee: KORLOY INC.
    Inventors: Nam-seon Lee, Ki-chan Nam, Kane-hee Lee, Hyo-san Kim, Young-heum Kim
  • Patent number: 10456845
    Abstract: A cutting insert of an embodiment includes an upper surface including a first upper cutting edge and a second upper cutting edge, a lower surface including a first lower cutting edge and a second lower cutting edge, and a side surface. The side surface includes a first surface extending from the second upper cutting edge, a second surface extending from the first lower cutting edge, a third surface extending from the first upper cutting edge, and a fourth surface extending from the second lower cutting edge. The first surface and the fourth surface are parallel to a central axis. The second surface is inclined so as to depart from the central axis as going from the lower surface toward the upper surface. The third surface is inclined so as to depart from the central axis as going from the upper surface toward the lower surface.
    Type: Grant
    Filed: June 13, 2018
    Date of Patent: October 29, 2019
    Assignee: KYOCERA CORPORATION
    Inventor: Shohei Mao
  • Patent number: 10427225
    Abstract: A cutting insert having two opposing end surfaces, two identical opposing major side surfaces and two identical opposing minor side surfaces. Each end surface has four corners with two lowered corners and two raised corners, the two lowered corners being diagonally opposite each other, the two raised corners being diagonally opposite each other. The cutting insert also includes a major cutting edge formed at an intersection of each major edge and the end surface. A first section of the major cutting edge proximate the raised corner constitutes a leading end of the major cutting edge, and a second section of the major cutting edge proximate the lowered corner constitutes a trailing end of the major cutting edge. An angled margin only partially extends along the leading end of the major cutting edge and segments the major cutting edge.
    Type: Grant
    Filed: November 15, 2017
    Date of Patent: October 1, 2019
    Assignee: KENNAMETAL INC.
    Inventors: Lance David Brunetto, Jean Luc Dufour, Andreas Lieber, Xiangdong Fang, Qiang Wu
  • Patent number: 10421128
    Abstract: A method to form a surface on a metal work piece includes providing a turning insert that has a nose angle formed between first and second cutting edges less than or equal to 85°; providing a turning tool having a tool body with an insert seat in which the turning insert is mountable; arranging the orientation of the second cutting edge such that it forms a back clearance angle of more than 90° in a feed direction; rotating the metal work piece around a rotational axis in a first direction; moving the turning insert in a direction parallel to or at an angle less than 45° relative to the rotational axis; and setting the longitudinal axis of the tool body at an angle greater than zero but less than or equal to 90° relative to the rotational axis of the metal work piece.
    Type: Grant
    Filed: February 9, 2018
    Date of Patent: September 24, 2019
    Assignee: SANDVIK INTELLECTUAL PROPERTY AB
    Inventors: Ronnie Lof, Adam Johansson
  • Patent number: 10406611
    Abstract: A cutting tool has a cutting body with a first insert pocket and an indexable cutting insert removably mounted therein. The first insert pocket has a first seat surface with a plurality of first engagement elements and a first support wall transverse thereto. The cutting insert has upper and lower surfaces and a boundary surface extending therebetween. The lower surface has a plurality of lower engaging elements and the boundary surface has a plurality of alternating first and second peripheral surfaces intersecting the upper surface to form first and second upper cutting edges. In each index position with the lower surface in contact with the first seat surface, the first support wall prevents translation of the cutting insert in a first direction, and the first engagement elements eccentrically contact the lower engaging elements to prevent translation of the cutting insert in a second direction perpendicular to the first direction.
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: September 10, 2019
    Assignee: Iscar, Ltd.
    Inventor: Sergey Irlin
  • Patent number: 10384270
    Abstract: A machining tool for cutting a work component includes a cutting tool insert having a cutting surface along a portion of an external surface that defines a circumference of the cutting tool insert. A plurality of cartridges are insertable into the machining tool, each having an insert pocket for receiving the cutting tool insert. The cutting tool insert is rotatable between first, second and third fixed positions in each insert pocket of the plurality of cartridges, a first portion of the cutting surface exposed when the cutting tool insert is in the first fixed position, a second portion of the cutting surface exposed when the cutting tool insert is in the second fixed position, and a third portion of the cutting surface exposed when the cutting tool insert is in the third fixed position. The insert pocket of each of the plurality of cartridges is offset from each other.
    Type: Grant
    Filed: March 8, 2018
    Date of Patent: August 20, 2019
    Assignee: Honda Motor Co., Ltd.
    Inventors: Dale Quinn, Joseph Zarb, Adam Bezzina
  • Patent number: 10384278
    Abstract: An indexable cutting insert has upper and lower surfaces with a peripheral surface extending therebetween and having four side surfaces alternating with four corner surfaces. The side and corner surfaces intersect the upper surface to form side and corner cutting edges, respectively. Each side cutting edge includes a primary cutting edge adjoining one of the corner cutting edges at a first endpoint and a secondary cutting edge adjoining another one of the corner cutting edges at a second endpoint. In a top view, the four primary cutting edges define an imaginary first square, each primary cutting edge is tangential to its adjoining corner cutting edge, and each secondary cutting edge is curved and entirely located in one of four imaginary quadrants. The insert is removably secured in a rotary cutting tool such that one of the secondary cutting edges contains the axially forwardmost point of the insert's upper peripheral edge.
    Type: Grant
    Filed: October 9, 2017
    Date of Patent: August 20, 2019
    Assignee: Iscar, Ltd.
    Inventor: Adi Shapir
  • Patent number: 10363616
    Abstract: A cutting tool has an insert receiving pocket provided with a base surface. The base surface has a screw hole, and second and third engagement surfaces which are brought into contact with a first engagement surface formed in the lower surface of the cutting insert, thereby suppressing shifting of the cutting insert during cutting. The base surface is divided into four areas by a first boundary which passes through the screw hole's center point, and a second boundary is perpendicular to the first boundary and also passing though the center point. The second engagement part is formed on the outer side surface side relative to the first boundary and on the base end side relative to the second boundary, and the third engagement part is formed on the outer side surface side relative to the first boundary and on the leading end surface side relative to the second boundary.
    Type: Grant
    Filed: February 18, 2016
    Date of Patent: July 30, 2019
    Assignee: TUNGALOY CORPORATION
    Inventor: Yosuke Yamada
  • Patent number: 10357833
    Abstract: The technical objective of the present invention is to provide a cutting insert that can minimize a phenomenon in which the cutting insert is lifted up from a seat surface of a cutting tool while a cutting process is being performed, and can increase an area by which the cutting insert is fastened to the cutting tool.
    Type: Grant
    Filed: November 29, 2016
    Date of Patent: July 23, 2019
    Assignee: KORLOY INC.
    Inventors: Min Seok Oh, Ki Chan Nam, Tae Kyun Kim, Nam Seon Lee, Hyo San Kim, Young Heum Kim
  • Patent number: 10350689
    Abstract: In a circular cutting insert of the present invention, the upper side surface and the lower side surface each include: a plurality of planar restraining faces which are disposed sequentially in a circumferential direction of the upper side surface and the lower side surface so as to interpose a joint portion between each of the planar restraining faces and each have a side disposed on the side surface-intermediate line (N); and a plurality of antivibration restraining faces which are each disposed between two planar restraining faces adjacent through the joint portion and each include an inclined face, and the restraining faces of the lower side surface are disposed so as to be shifted with respect to the restraining faces of the upper side surface by a predetermined angle (?) around a central axis of a screw insertion hole.
    Type: Grant
    Filed: June 13, 2016
    Date of Patent: July 16, 2019
    Assignee: Mitsubishi Hitachi Tool Engineering, Ltd.
    Inventor: Hayato Takahashi
  • Patent number: 10350688
    Abstract: An indexable tangential cutting insert for a milling tool includes two opposing side surfaces and four identical lateral surfaces extending between the side surfaces. Each lateral surface of the insert is provided with a support surface configured to be supported by, on one hand, a corresponding support face of a pocket of a tool body providing an axial support to the insert in two of eight index positions and, on the other, a corresponding support face of the pocket providing a tangential support to the insert in two other of said eight index positions. Each lateral surface of the insert is provided with a single second support surface being concave as seen in a direction perpendicular to said side surfaces and extending diagonally across the lateral surface.
    Type: Grant
    Filed: January 5, 2016
    Date of Patent: July 16, 2019
    Assignee: SANDVIK INTELLECTUAL PROPERTY AB
    Inventors: Marc Rue, Yannick Sarton
  • Patent number: 10343221
    Abstract: A cutting insert and a cutting tool having same. The cutting insert includes: an upper surface; a lower surface having a flat surface; a fastening hole penetrating the upper surface and the lower surface; side surfaces each connecting to the upper surface and the lower surface; and cutting edges formed by the upper surface and the side surfaces. A first cutting edge is inclined downward. A major side surface comprises a first major side surface connected to the upper surface so as to constitute the first cutting edge, and a second major side surface connected to the first major side surface and the lower surface. A minor side surface comprises a first minor side surface connected to the upper surface so as to constitute a second cutting edge, and a third minor side surface connected to the upper surface and the lower surface.
    Type: Grant
    Filed: April 24, 2015
    Date of Patent: July 9, 2019
    Assignee: KORLOY INC.
    Inventors: Ki-Chan Nam, Young-Heum Kim, Hyo-San Kim
  • Patent number: 10343226
    Abstract: A cutting insert comprises: a first end surface and a second end surface which are opposed to each other; a peripheral side surface which extends so as to connect the first end surface and the second end surface; a first cutting edge which is arranged in an intersecting edge between the first end surface and the peripheral side surface; and a second cutting edge which is arranged in an intersecting edge between the second end surface and the peripheral side surface. The peripheral side surface includes a first flank which is connected to the first cutting edge and an intermediate peripheral side surface portion which is arranged closer to the second end surface than the first flank. The first flank extends in a direction perpendicular to the first end surface. The intermediate peripheral side surface portion protrudes outward from the first flank.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: July 9, 2019
    Assignee: TUNGALOY CORPORATION
    Inventors: Satoru Yoshida, Keisuke Morita
  • Patent number: 10328495
    Abstract: A cutting tool according to an aspect of the present invention is a cutting tool for cutting a rotationally symmetrical surface of a rotating workpiece. The cutting includes the step of feeding the cutting tool in a direction inclined with respect to a rotational axis of the rotationally symmetrical surface, while holding the cutting tool in contact with the rotationally symmetrical surface. In the step of feeding the cutting tool, the cutting tool has a point that is in contact with the rotationally symmetrical surface and the point shifts as the cutting tool is fed. The cutting tool includes: a rake face; a flank face; and a cutting edge connecting the rake face and the flank face. The cutting edge as seen from above the flank face has a shape including at least one arc, and the arc has a radius of curvature of not less than 100 mm and not more than 500 mm.
    Type: Grant
    Filed: January 31, 2017
    Date of Patent: June 25, 2019
    Assignee: Sumitomo Electric Hardmetal Corp.
    Inventors: Yasuyuki Kanada, Kunishige Tanaka, Shota Takemura
  • Patent number: 10322458
    Abstract: A cutting insert has a first (top) end surface, a second (bottom) end surface, a peripheral side surface connecting the top and bottom end surfaces, and a mounting hole having a central axis O which penetrates the top and bottom end surfaces. Cutting edges are formed on an intersecting edge between the first end surface and the peripheral side surface. The second end surface has an inclined part. When a virtual plane substantially perpendicular to the axis O and passing through any point of the cutting edges is defined, the inclined part is inclined so as to be more distant from the virtual plane, heading from the peripheral side surface to the axis O. A projected part projected in a direction along the axis O is formed in an area around the mounting hole in the inclined part. This reinforces the strength of the mounting hole.
    Type: Grant
    Filed: November 26, 2015
    Date of Patent: June 18, 2019
    Assignee: TUNGALOY CORPORATION
    Inventors: Haruki Kumoi, Ryuichi Saji
  • Patent number: 10307828
    Abstract: The invention relates to a cutting insert (1) for installation in carrier tools for machining workpieces, comprising a top side (2), a bottom side (3), and side surfaces (4) connecting the top side (2) and the bottom side (3), wherein a peripheral protective chamfer (5) having an upper edge (6) adjoining the top side (2) of the cutting insert (1) and having a lower edge (7) adjoining the side surfaces (4) is arranged at the transition from the top side (2) to the side surfaces (4), wherein the upper edge (6) forms cutting edges (9) and cutting corners (10) and, in the region of the cutting edges (9), the lower edge (7) transitions into a cutting-edge clearance angle surface (8) having an edge clearance angle of 3° to 11°. For improved edge stability in drawn cuts, it is proposed that, in the region of the cutting corners (10), the lower edge (7) of the protective chamfer (5) transitions into a corner clearance angle surface (11) having an edge clearance angle of 3° to 5°.
    Type: Grant
    Filed: December 4, 2015
    Date of Patent: June 4, 2019
    Assignee: CERAMTEC GMBH
    Inventor: Alexander Kiemele
  • Patent number: 10307840
    Abstract: An indexable milling or drilling insert having a 180-degree rotational symmetry about each of the first, second and third axes (X, Y, Z) of a three-dimensional euclidean space. The insert has opposite first and second main surfaces and a peripheral surface extending therebetween. Each main surface has a main abutment surface and at least two rake surfaces. The insert has a through clamping bore which extends along the third axis and opens out to the main surfaces. The peripheral surface has two opposite front surfaces connected to two opposite side surfaces. Each front surface has a pair of outward abutment surfaces and each side surface has a pair of at least partially planar inward abutment surfaces. Each pair of outward abutment surfaces converge outwardly away from the third axis and each pair of inward abutment surfaces converge inwardly towards the third axis.
    Type: Grant
    Filed: November 28, 2017
    Date of Patent: June 4, 2019
    Assignee: Iscar, Ltd.
    Inventor: Yuri Men
  • Patent number: 10300538
    Abstract: A milling insert, including an upperside, an underside, and a reference plane parallel thereto. A plurality of indexable cutting edges are formed along a peripheral borderline in transitions between at least the upperside and a number of clearance surfaces. Each cutting edge includes a chip-removing main edge and a surface-wiping secondary edge. The main edge, from a first end of the main edge adjacent to the secondary edge, first declines toward the underside of the milling insert and then, from a lowest part, rises toward an opposite second end of the main edge. The secondary edge is inclined at an angle (?) in relation to the reference plane as viewed perpendicularly to the clearance surface of the secondary edge, such that a first end of the secondary edge connected to the main edge is situated on a lower level than the opposite, second end of the secondary edge.
    Type: Grant
    Filed: November 14, 2016
    Date of Patent: May 28, 2019
    Assignee: Sandvik Intellectual Property AB
    Inventors: Amil Oprasic, Leif Widin, Stefan Roman, Lennart Wihlborg
  • Patent number: 10286455
    Abstract: There is provided a throw-away tip which includes a blade containing diamond and is excellent in chip processability. The throw-away tip comprises a body and a blade provided to the body and having a cutting edge, the blade containing 80% by volume or more of diamond, the blade having 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, the recess having a side surface having an inclined surface that recedes continuously as a distance thereof from the land surface increases in magnitude and that has a shape identical to that of a portion of a side surface of a shape of a body of revolution.
    Type: Grant
    Filed: July 31, 2015
    Date of Patent: May 14, 2019
    Assignee: Sumitomo Electric Hardmetal Corp.
    Inventors: Yuji Tomoda, Yasuyuki Kanada, Kunishige Tanaka
  • Patent number: 10259057
    Abstract: A cutting insert, a cutting tool and method of manufacturing a machined product. The cutting insert includes: upper and lower surfaces; a side surface; a cutting edge; and a rake portion on the upper surface. The cutting edge includes major and minor cutting edges that are convex toward outside of the main body portion. The minor cutting edge has a curvature radius smaller than a curvature radius of the major cutting edge. The rake portion is inclined and approaches the lower surface as moving from the major cutting edge toward inside of the main body portion and is located along the major cutting edge. An inclination angle of the rake portion becomes smaller as moving from a part continuous with one end of the major cutting edge toward a part continuous with center of the major cutting edge.
    Type: Grant
    Filed: September 16, 2016
    Date of Patent: April 16, 2019
    Assignee: Kyocera Corporation
    Inventor: Masahiro Yamamoto
  • Patent number: 10259053
    Abstract: A cutting insert including first cutting edges and second cutting edges respectively formed in a first end surface and a second end surface which are opposed to each other; at least one groove formed in a peripheral side surface which connects the first end surface and the second end surface; and, while one end of the groove reaches the first end surface, another end thereof reaches the second end surface, and an opening width in the first end surface is different from an opening width in the second end surface.
    Type: Grant
    Filed: April 5, 2016
    Date of Patent: April 16, 2019
    Assignee: TUNGALOY CORPORATION
    Inventors: Ryuichi Saji, Yosuke Yamada