Patents Assigned to Kennametal Inc.
  • Patent number: 11919094
    Abstract: A modular drill apparatus (100) includes: a shank (110) having a pocket (112); a cylindrical post (117) centrally secured within a bottom (114) of the pocket (112); a cutting tip (130) including a lower portion (131) including a central bore (136) which receives the cylindrical post (117), an upper portion (132) and a channel (134) therebetween; and an insert assembly (150) interfitted within and supported by the channel (134), the insert assembly (150) being expandable along a length thereof for securing the cutting tip (130) to the shank (110) within the pocket (112) by providing an interference fit and retractable along the length thereof for releasing the cutting tip (130) from the pocket (112) by overcoming the interference fit.
    Type: Grant
    Filed: July 20, 2021
    Date of Patent: March 5, 2024
    Assignee: KENNAMETAL INC.
    Inventors: Marcelo Euripedes da Silva, Ruy Frota de Souza Filho
  • Publication number: 20240066611
    Abstract: Cutting tool for the rotary machining of workpieces, in particular a twist drill, with a cutting tip which has at least one main cutting edge and at least one free surface, wherein a flank face adjoins the main cutting edge radially to the outside, and wherein a flank angle of the flank face increases in a radially outward direction.
    Type: Application
    Filed: November 8, 2023
    Publication date: February 29, 2024
    Applicant: Kennametal Inc.
    Inventors: Christian Strauchmann, Jürgen Schwägerl, Herbert Rudolf Kauper
  • Publication number: 20240066653
    Abstract: A system and method for monitoring and predicting wear of a cutting tool used for machining a workpiece is disclosed. The system includes a cutting tool having a shank and a cutting head. The system also includes a split, modular and wireless wear detection system including one or more sensors mounted to the cutting tool for providing a data signal representative of a physical condition of the system, and a data recording and data transmitting device for recording the data signal from the one or more sensors and for generating and transmitting a data signal to a processor. The processor applies a machine learning data processing technique in real time to monitor and/or predict a condition of various components and/or parameters of the system during a metal cutting operation.
    Type: Application
    Filed: August 24, 2022
    Publication date: February 29, 2024
    Applicant: Kennametal Inc.
    Inventors: Shuangyuan Zhang, Christoph Gey, Patrick Kuhlemann, Ruy Frota de Souza Filho
  • Patent number: 11911835
    Abstract: A rotary cutting tool includes a disc-like central body having an outer peripheral surface. A peripheral support member extends circumferentially along the peripheral outer surface of the disc-like central body and provides support against centrifugal and cutting forces exerted on an insert pocket during a cutting operation. A radial support member extends radially along the disc-like central body to the peripheral support member. The radial support member structurally interacts with the peripheral support member to provide additional support for the insert pocket against centrifugal and cutting forces exerted on the insert pocket during a cutting operation. The radial support member and the peripheral support member have a three-dimensional topology that maximizes a stiffness-to-weight ratio of the rotary cutting tool. The rotary cutting tool may include a second radial support member extending radially along the disc-like central body to the peripheral support member.
    Type: Grant
    Filed: March 23, 2022
    Date of Patent: February 27, 2024
    Assignee: KENNAMETAL INC.
    Inventors: Logan M. Semnisky, Alan J. Bookheimer
  • Patent number: 11906273
    Abstract: Armor plate having a thickness of at least 3 mm and an edge length of at least 20 mm, wherein the armor plate (10) consists of a material made largely of a component selected from the group hard metal, cermet and/or combinations thereof. An armor plate composite comprising at least two layers of armor plates and an armor are provided as well.
    Type: Grant
    Filed: June 10, 2020
    Date of Patent: February 20, 2024
    Assignee: KENNAMETAL INC.
    Inventors: Werner Parlow, Manfred Wolf, Thomas Theuerkauf
  • Patent number: 11898446
    Abstract: A tool retainer is provided. The tool has a retainer sleeve having a longitudinal external tab to engage with an internal recessed radial groove with a tool holder, and wherein the retainer sleeve has one or more internal radial tabs that engage with a recessed groove in a rotating tool shank. A cutting tool assembly including a cutting bit and the retainer sleeve is provided.
    Type: Grant
    Filed: July 29, 2022
    Date of Patent: February 13, 2024
    Assignee: KENNAMETAL INC.
    Inventors: Arkadiusz Dlugosz, James R. Geyer
  • Patent number: 11897043
    Abstract: Cutting inserts are disclosed having four cutting edges and milling tools comprising the cutting inserts installed in pockets on a rotatable cutting tool holder. The cutting inserts comprise a front face, a rear face and four side faces extending between the front and rear faces. A cutting edge is provided at the intersection of the front face and each side face. Each cutting edge comprises a plurality of cutting edge segments, including a facet cutting edge that forms the flat surface of a workpiece being milled, and a straight lead cutting edge that extends at an angle away from the facet cutting edge. The lead cutting edge angle is selected to provide effective milling of the workpiece at entry. The cutting inserts have side seating surfaces that allow the inserts to be more stably supported in cutting insert pockets.
    Type: Grant
    Filed: December 31, 2021
    Date of Patent: February 13, 2024
    Assignee: KENNAMETAL INC.
    Inventors: Jean Luc D. Dufour, Gilles Festeau
  • Publication number: 20240042530
    Abstract: A rotary cutting tool with enhanced bump-off capability is disclosed. The cutting tool includes a tool shank having a pocket. A replaceable cutting head is at least partially disposed within the pocket of the tool shank with an interference fit. A coupling pin assembly is at least partially received within a bore of the tool shank. The coupling pin assembly comprises a sleeve member and a coupling pin at least partially disposed within the sleeve member. The sleeve member includes an upper portion and a lower portion having a non-circular cross-sectional shape with a bump-off surface. An actuation screw contacts the coupling pin assembly and causes the replaceable cutting head to move relative to the tool shank. The bump-off surface of the lower portion of the sleeve member extends radially outward with respect to the coupling pin by a distance, D, thereby providing enhanced bump-off capability.
    Type: Application
    Filed: October 3, 2023
    Publication date: February 8, 2024
    Applicant: Kennametal Inc.
    Inventors: Ruy Frota de Souza Filho, Marcelo Euripedes Silva, Nicholas J. Henry
  • Publication number: 20240044249
    Abstract: A cutter tooth assembly includes a cutter tooth having a shank portion and a cutting portion, and a cutter tooth holder having a pocket for receiving at least a portion of the shank portion of the cutter tooth. The shank portion of the cutter tooth has a plurality of tapered surfaces formed at a first angle with respect to a vertical axis of the cutter tooth, and the pocket of the cutter tooth holder has a plurality of tapered surfaces formed at a second angle with respect to a vertical axis of the cutter tooth holder that cooperate with the plurality of tapered surfaces of the shank portion of the cutter tooth to minimize tolerances between the shank portion of the cutter tooth and the pocket of the cutter tooth holder during wear of the cutter tooth assembly.
    Type: Application
    Filed: August 2, 2022
    Publication date: February 8, 2024
    Applicant: Kennametal Inc.
    Inventor: Eric Helsel
  • Publication number: 20240035378
    Abstract: A tool retainer is provided. The tool has a retainer sleeve having a longitudinal external tab to engage with an internal recessed radial groove with a tool holder, and wherein the retainer sleeve has one or more internal radial tabs that engage with a recessed groove in a rotating tool shank. A cutting tool assembly including a cutting bit and the retainer sleeve is provided.
    Type: Application
    Filed: July 29, 2022
    Publication date: February 1, 2024
    Applicant: Kennametal Inc.
    Inventors: Arkadiusz Dlugosz, James R. Geyer
  • Patent number: 11883894
    Abstract: A cutting tool includes a tubular body made of a composite material, such as carbon reinforced fiber polymer (CFRP). A front support structure comprising a central hub and a plurality of spokes extending radially outward from the central hub is attached proximate the front end of the tubular body. A rear support structure comprising a central hub and a plurality of spokes extending radially outward from the central hub is attached proximate the rear end of the tubular body. Cartridge supports are attached directly to one of the front and rear support structures. A rear machine connection member is attached to the rear support structure for providing coolant to the front and rear support structures. The CFRP tubular body increases the stiffness to weight ratio of the cutting tool.
    Type: Grant
    Filed: July 13, 2021
    Date of Patent: January 30, 2024
    Assignee: KENNAMETAL INC.
    Inventors: Alan J. Bookheimer, Logan M. Semnisky
  • Patent number: 11883888
    Abstract: A rotary cutting tool with enhanced bump-off capability is disclosed. The cutting tool includes a tool shank having a pocket. A replaceable cutting head is at least partially disposed within the pocket of the tool shank with an interference fit. A coupling pin assembly is at least partially received within a bore of the tool shank. The coupling pin assembly comprises a sleeve member and a coupling pin at least partially disposed within the sleeve member. The sleeve member includes an upper portion and a lower portion having a non-circular cross-sectional shape with a bump-off surface. An actuation screw contacts the coupling pin assembly and causes the replaceable cutting head to move relative to the tool shank. The bump-off surface of the lower portion of the sleeve member extends radially outward with respect to the coupling pin by a distance, D, thereby providing enhanced bump-off capability.
    Type: Grant
    Filed: June 28, 2021
    Date of Patent: January 30, 2024
    Assignee: KENNAMETAL INC.
    Inventors: Ruy Frota de Souza Filho, Marcelo Euripedes Silva, Nicholas J. Henry
  • Publication number: 20240024958
    Abstract: A cutting tool includes a base body and a cutting head at least partially disposed within a modular pocket of the base body. The modular pocket is formed by at least one wall section removably attached to the base body. In one variation, a non-removable portion of the base body also forms part of the modular pocket. In another variation, the modular pocket is formed by two removable wall sections on opposite sides of the modular pocket. In yet another variation, the removable wall sections include a clamping portion to exert a downward force on the cutting head to enable mounting the cutting head in the modular pocket using an interference fit.
    Type: Application
    Filed: July 20, 2022
    Publication date: January 25, 2024
    Applicant: Kennametal Inc.
    Inventors: Patrick Kuhlemann, Michael Schuffenhauer, Marcelo Euripedes da Silva, Ruy Frota de Souza Filho
  • Publication number: 20240024967
    Abstract: A modular cutting tool includes a base body, an intermediate body removably attached to the base body, and a cutting head at least partially disposed within a pocket of the intermediate body. A tooling tree allows a user to select a different combination of the base body, the intermediate body and the cutting head of the cutting tool based on desired physical properties of each component.
    Type: Application
    Filed: July 20, 2022
    Publication date: January 25, 2024
    Applicant: Kennametal Inc.
    Inventors: Marcelo Euripedes da Silva, Ruy Frota de Souza Filho, Patrick Kuhlemann, Michael Schuffenhauer
  • Patent number: 11878352
    Abstract: A cutting insert is described. It has a cutting insert body with a central mounting section and at least one cutting edge. The cutting edge is wave-shaped and generally descending from an end section of the cutting edge towards a middle section of the cutting edge. Furthermore, a chip guiding recess extends substantially along the at least one cutting edge and is arranged between the cutting edge and the central mounting section. A chip breaker element is arranged in the chip guiding recess. The chip breaker element comprises a first portion having a first width and a second portion having a second width, wherein a transition between the first portion and the second portion is formed as a step.
    Type: Grant
    Filed: September 30, 2021
    Date of Patent: January 23, 2024
    Assignee: KENNAMETAL INC.
    Inventors: Igor Kaufmann, Sathish Kumar Nagarajan, Pradeep Soore
  • Patent number: 11865629
    Abstract: A rotary cutting tool includes a shank portion, a cutting portion, and a cutting tip. The cutting portion includes a plurality of blades and a plurality of flutes. Each blade includes a leading face, a trailing face, and a land surface extending between the leading face and the trailing face. The cutting end includes an end cutting edge having a first end face cutting edge portion formed with a positive, neutral or negative radial angle, a positive dish angle and a negative axial rake angle, and second end face cutting edge portion formed with a highly positive radial angle, a positive dish angle and a negative axial rake angle. The highly positive radial angle of the second end face cutting edge portion enables the rotary cutting tool to perform a ramp operation at very large ramp angles of between about 15-45 degrees.
    Type: Grant
    Filed: November 4, 2021
    Date of Patent: January 9, 2024
    Assignee: KENNAMETAL INC.
    Inventors: Leonid B. Sharivker, Sergei Boulakhov, Stephen M. George, John Boyea
  • Patent number: 11858053
    Abstract: Cutting tool for the rotary machining of workpieces, in particular a twist drill, with a cutting tip which has at least one main cutting edge and at least one free surface (24), wherein a flank face adjoins the main cutting edge radially to the outside, and wherein a flank angle of the flank face increases in a radially outward direction.
    Type: Grant
    Filed: September 24, 2020
    Date of Patent: January 2, 2024
    Assignee: KENNAMETAL INC.
    Inventors: Christian Strauchmann, Jürgen Schwägerl, Herbert Rudolf Kauper
  • Patent number: 11846014
    Abstract: An evaporator body for a PVD coating system comprises a basic body and an evaporator surface, to which a titanium dihydride layer is applied. A titanium hydride layer comprises an organic carrier agent and titanium hydride as the single inorganic solid. The thickness of the layer is less than or equal to 10 ?m.
    Type: Grant
    Filed: April 14, 2020
    Date of Patent: December 19, 2023
    Assignee: KENNAMETAL INC.
    Inventors: Rodrigue Ngoumeni Yappi, Hubert Josef Schweiger, Rudolf Karl Grau
  • Patent number: D1012131
    Type: Grant
    Filed: March 3, 2022
    Date of Patent: January 23, 2024
    Assignee: KENNAMETAL INC.
    Inventors: Brandon J. Kenno, Thomas J. Long, II
  • Patent number: D1015136
    Type: Grant
    Filed: February 21, 2022
    Date of Patent: February 20, 2024
    Assignee: KENNAMETAL INC.
    Inventors: James R Geyer, Arkadiusz Dlugosz, Thomas J. Long, II