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公开(公告)号：US20190210124A1
公开(公告)日：2019-07-11
申请号：US15864600
申请日：2018-01-08
申请人： Kennametal Inc.
CPC分类号： B23C5/202 , B23C5/109 , B23C5/207 , B23C5/22 , B23C5/2221 , B23C2200/0416 , B23C2200/0438 , B23C2200/08 , B23C2200/125 , B23C2200/168 , B23C2210/0414 , B23C2210/0428 , B23C2210/045 , B23C2210/28 , B23C2226/27 , B23C2240/24
摘要： A compression milling cutter includes a shank and a front cutting portion that terminates at a leading end of the milling cutter. The front cutting portion has a first circumferential row of one or more insert receiving pockets proximate a leading end of the milling cutter, and a second circumferential row of one or more insert receiving pockets, each insert receiving pocket configured to receive a respective indexable cutting insert. The cutting insert mounted in the first circumferential row has a positive axial rake angle, A, and the indexable cutting insert mounted in an insert pocket of the second circumferential row has a negative axial rake angle, B. Because of the different axial rake angles, chips generated during a machining operation flow in opposite directions, thereby creating a compression zone disposed between the first and second circumferential rows. This compression zone replicates the cutting action of a solid end mill, particularly when machining fiber reinforced plastic materials.
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公开(公告)号：US20190160551A1
公开(公告)日：2019-05-30
申请号：US15822977
申请日：2017-11-27
申请人： Kennametal Inc.
发明人： Ruy Frota de Souza
摘要： In one aspect, expansion sleeves for pressure-activated tool holder apparatus are described herein. An expansion sleeve, for example, comprises a first end, a second end and a longitudinal axis extending between the first end and the second end. A first set of fluid chambers are proximate the first end of the sleeve and a second set of fluid chambers are proximate the second end, wherein fluid channels extend along the longitudinal axis to connect radially offset fluid chambers of the first and second sets.
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73.发明申请公开(公告)号：US20190143424A1
公开(公告)日：2019-05-16
申请号：US15813580
申请日：2017-11-15
申请人： Kennametal Inc.
IPC分类号： B23C5/20
CPC分类号： B23C5/207 , B23C5/06 , B23C2200/0433 , B23C2200/0477 , B23C2200/0494 , B23C2200/125 , B23C2200/243 , B23C2200/367
摘要： 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 comprising 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 section of the major cutting edge proximate the raised corner constitutes a leading end of the major cutting edge, and a 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.
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公开(公告)号：US10279399B2
公开(公告)日：2019-05-07
申请号：US15018924
申请日：2016-02-09
申请人： Kennametal Inc.
发明人： Markus Heinloth , Jan Gruenler , Hans Woerner
摘要： A milling tool with a disk- or strip-shaped base body, which can be driven around an axis of rotation, and several cutting inserts arranged along the outer circumference of the base body on opposite sides from one another, wherein the cutting inserts, viewed in the axial direction, overlap one another. The invention also relates to a tangential cutting insert for a milling tool of the above-mentioned type, with two side surfaces, through which a fastening opening extends, and two face ends, wherein cutting edges are formed at the junction of the front faces to the side surfaces, wherein the fastening opening is positioned eccentrically.
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公开(公告)号：US20190119789A1
公开(公告)日：2019-04-25
申请号：US15793706
申请日：2017-10-25
申请人： Kennametal Inc.
IPC分类号： C22C19/07
摘要： In one aspect, cobalt-based alloys are described herein comprising composition and microstructure permitting a balance of hardness, toughness and wear resistance desirable for wood cutting applications. A cobalt-based alloy comprises a chromium rich carbide phase in an amount of 15-30 volume percent, a tungsten-rich phase in an amount of 9-15 volume percent and a balance of cobalt-rich solid solution matrix comprising nickel, chromium, vanadium and tungsten.
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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
申请人： KENNAMETAL INC.
摘要： 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
申请人： Kennametal Inc.
发明人： Qi Wang , Neal Myers , Shi Chen , Igor Kaufmann
IPC分类号： B23B27/18
摘要： 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
申请人： KENNAMETAL INC.
发明人： Zhenyu Liu , Yixiong Liu
摘要： 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
申请人： KENNAMETAL INC.
发明人： Vineet Kumar , Ronald Penich , Yixiong Liu
IPC分类号： C23C14/06 , C23C28/04 , C04B35/66 , H01J37/32 , C23C14/00 , C23C14/02 , C23C14/32 , C23C28/00
摘要： 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：US20180369931A1
公开(公告)日：2018-12-27
申请号：US16008693
申请日：2018-06-14
申请人： Kennametal Inc.
IPC分类号： B23B31/30
摘要： An adapter sleeve is described for inserting into an expansion chuck of a cutting device with a substantially cylindrical body that defines a longitudinal axis (L) of the adapter sleeve and a seat area for a cutting tool. The body comprises an axial front end and an axial rear end opposite the front end by means of which the adapter sleeve can be inserted into the expansion chuck of the cutting device. An outlet element is provided at the axial front end through which a coolant can be discharged toward the cutting tool. At least one cooling line extends along the body up to the outlet element and comprises a body line section and an outlet element section. At least one channel-like outlet nozzle is formed in the outlet element and is in fluidic connection with the at least one cooling line. The flow cross-section of the cooling line decreases or remains the same toward the axial front end. In addition, a cutting device is described.
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