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公开(公告)号：US10253410B2
公开(公告)日：2019-04-09
申请号：US15487209
申请日：2017-04-13
Applicant: KENNAMETAL INC.
Inventor： Vineet Kumar , Ronald M. Penich , Peter R. Leicht , Mark S. Greenfield , Yixiong Liu
Abstract: A coated cutting insert includes a substrate that is either a ceramic substrate or polycrystalline cubic boron nitride-containing substrate and has a substrate surface. A base coating scheme is applied by chemical vapor deposition to the substrate surface wherein the base coating scheme includes the following coating layers: an inner coating layer adjacent to the substrate surface wherein the inner coating layer is a nitride selected from the group consisting of titanium nitride, zirconium nitride and hafnium nitride; an inner mediate coating layer deposited to the inner coating layer wherein the inner mediate coating layer is a carbonitride selected from the group consisting of titanium carbonitride, zirconium carbonitride and hafnium carbonitride; an outer mediate coating layer deposited to the inner mediate coating layer and wherein the outer mediate coating layer is a carbonitride selected from the group consisting of titanium carbonitride, zirconium carbonitride and hafnium carbonitride; and an outer coating layer deposited on the outer mediate coating layer wherein the outer coating layer is a carbide selected from the group consisting of titanium carbide, zirconium carbide and hafnium carbide. An exterior coating scheme is deposited on the base coating scheme by physical vapor deposition.
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公开(公告)号：US20190099811A1
公开(公告)日：2019-04-04
申请号：US15722728
申请日：2017-10-02
Applicant: Kennametal Inc.
Inventor： Qi Wang , Neal Myers , Shi Chen , Igor Kaufmann
IPC: B23B27/18
Abstract: A cutting insert includes a tool carrier having a body with a pocket, and a cutting tip affixed to the pocket by brazing. The pocket is defined by a vertical back wall and a horizontal support surface. A notch is formed at the intersection between the vertical back wall and the horizontal support surface. The notch has a non-planar first portion proximate the vertical back wall and formed with a radius, R1, and a planar second portion extending between the first portion and the horizontal support surface and formed at an inclination angle with respect to a plane parallel to the horizontal support surface of the pocket. The design of the notch significantly reduces thermal stress and eliminates the formation of cracks in the pocket of the tool carrier when using an injection molding process to form the tool carrier.
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公开(公告)号：US10202686B2
公开(公告)日：2019-02-12
申请号：US15495570
申请日：2017-04-24
Applicant: KENNAMETAL INC.
Inventor： Zhenyu Liu , Yixiong Liu
Abstract: In one aspect, articles are described herein comprising refractory coatings employing an inter-anchored multilayer architecture. Articles having refractory coatings described herein, in some embodiments, are suitable for high wear and/or abrasion applications such as metal cutting operations. A coated article described herein comprises a substrate and a coating deposited by CVD adhered to the substrate, the coating including a refractory layer comprising a plurality of sublayer groups, a sublayer group comprising a Group IVB metal nitride sublayer and an adjacent layer alumina sublayer, the Group IVB metal nitride sublayer comprising a plurality of nodules interfacing with the alumina sublayer.
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公开(公告)号：US10184187B2
公开(公告)日：2019-01-22
申请号：US15210566
申请日：2016-07-14
Applicant: KENNAMETAL INC.
Inventor： Vineet Kumar , Ronald Penich , Yixiong Liu
Abstract: In one aspect, coated cutting tools are described herein comprising a substrate and a coating comprising a refractory layer deposited by physical vapor deposition adhered to the substrate, the refractory layer comprising M1-xAlxN wherein x≥0.68 and M is titanium, chromium or zirconium, the refractory layer including a cubic crystalline phase and having hardness of at least 25 GPa.
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公开(公告)号：US10160042B2
公开(公告)日：2018-12-25
申请号：US14669298
申请日：2015-03-26
Applicant: Kennametal India Limited
Inventor： Santhosha B. Borapura
Abstract: A reducer sleeve includes a reducer sleeve body that has an axial forward end and an axial rearward end, as well as a flange at the axial forward end thereof. The flange contains a first nozzle. The reducer sleeve body contains a first trough extending from the axial rearward end to the axial forward end. The first trough is in communication with the first nozzle whereby coolant is able to enter the first trough and flow along the first trough and into the first nozzle wherein the coolant is ejected by the first nozzle.
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Patent Agency Ranking
公开(公告)号：US10124424B2
公开(公告)日：2018-11-13
申请号：US14993959
申请日：2016-01-12
Applicant: Kennametal Inc.
Inventor： Ruy Frota de Souza Filho , Sebastian Schleicher
Abstract: A rotary cutting tool has a central, longitudinal axis. One or more internal balancing features are disposed within a cavity of the rotary cutting tool. Each internal balancing feature includes a balancing mass suspended within the cavity by a spring-like element, and an adjusting screw for effecting radial movement of the balancing mass. Each internal balancing feature can be integrally-formed with the rotary cutting tool using a 3-D printing technique. The rotary cutting tool can be any rotary cutting tool, such as a milling cutter, a boring bar, and the like. The internal balancing features are arranged at predetermined locations within the rotary cutting tool to enable static and/or dynamic balancing of the rotary cutting tool.
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公开(公告)号：US10118236B2
公开(公告)日：2018-11-06
申请号：US14497768
申请日：2014-09-26
Applicant: Kennametal Inc.
Inventor： Steven P. Archambault
IPC: B23C5/10
Abstract: A rotary cutting tool has a cutting tool body with a cutting end and a cutting portion adjacent to the cutting end. The cutting portion includes a first blade, which has a first finishing cutting portion and a first roughing cutting portion adjacent to the first finishing cutting portion. The cutting portion includes a second blade, which has a second finishing cutting portion and a second roughing cutting portion adjacent to the second finishing cutting portion. The first finishing cutting portion overlaps one or both of the second finishing cutting portion and the second roughing cutting portion. The first roughing cutting portion overlaps one or both of the second roughing cutting portion and the second finishing portion.
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公开(公告)号：US10105769B2
公开(公告)日：2018-10-23
申请号：US14687189
申请日：2015-04-15
Applicant: Kennametal Inc.
Inventor： Eduard Ach , Christoph Gey
Abstract: A machining tool, in particular a drill carrier tool, includes a monolithic base body extending in the axial direction which, at least in one section, has a porous or grid-like core structure that is encased in a solid outer jacket. These measures allow less material to be used, while maintaining good mechanical properties. The porous or grid-like core structure is simultaneously used for transporting coolant. The base body is manufactured in particular by means of a 3D printing method.
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公开(公告)号：US10100405B2
公开(公告)日：2018-10-16
申请号：US14690631
申请日：2015-04-20
Applicant: Kennametal Inc.
Inventor： Rodrigo A. Cooper , Zhenyu Liu , Peter R. Leicht , Yixiong Liu
Abstract: A coated cutting insert for a chipforming material removal operation wherein the coated insert has a substrate and a coating scheme on the substrate. The coating scheme includes a CVD transition coating layer. The coating scheme further includes a CVD multi-layered coating scheme having a plurality of coating sets. Each one of the coating sets has an aluminum oxide coating layer and a nitrogen-containing coating layer.
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公开(公告)号：US20180250755A1
公开(公告)日：2018-09-06
申请号：US15448427
申请日：2017-03-02
Applicant: Kennametal Inc.
Inventor： Stephen Michael George
IPC: B23B51/02
CPC classification number: B23B51/02 , B23B2251/04 , B23B2251/202 , B23B2251/282 , B23B2251/408 , Y10T408/9097
Abstract: A twist drill having a shaft with a longitudinal axis, wherein the cutting tool includes a plurality of flutes extending about the longitudinal shaft along a helix angle and a plurality of lands adjacent the flutes. Each land has a cutting edge adjacent a corresponding flute and a margin (i.e. relief surface). A cutting point is adjacent a forward end of the shaft. A first, second and third forward cutting surfaces are adjacent the first, second and third cutting edges, respectively, and extend proximate the cutting point axially rearward for a predetermined length about the longitudinal axis of the shaft. The cutting edges are unequally angularly spaced from each other, and each forward cutting surface has a primary relief angle that are unequal to each other.
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