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公开(公告)号：US20230133391A1
公开(公告)日：2023-05-04
申请号：US17519267
申请日：2021-11-04
申请人： Kennametal Inc.
IPC分类号： B23C5/10
摘要： 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.
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公开(公告)号：USD982633S1
公开(公告)日：2023-04-04
申请号：US29773760
申请日：2021-03-11
申请人： Kennametal Inc.
设计人： Brandon J. Kenno , James R. Geyer
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公开(公告)号：US11590583B2
公开(公告)日：2023-02-28
申请号：US16648520
申请日：2018-07-26
申请人： KENNAMETAL INC.
发明人： Michael Hacker , Sebastian Kunschir
摘要： The invention relates to a machining tool (2) for processing a bore in a workpiece, in particular for simultaneous processing of a plurality of bores distanced from one another by a predefined distance, said machining tool having a cutting body (8) extending in the direction of a tool longitudinal axis (4) and having at least one cutting element (12) arranged circumferentially, and a guide body (10), which adjoins the cutting body (8) in the direction of the tool longitudinal axis (4), is fastened to the cutting body (8) and has at least one circumferentially arranged guide element (20). The guide body (10) is free of cutting elements (12) and the guide body (10) is designed to exert a preload force such that, during use, the at least one guide element (20) is preloaded against a bearing for the guide body (10).
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公开(公告)号：US11577326B2
公开(公告)日：2023-02-14
申请号：US16910675
申请日：2020-06-24
申请人： Kennametal Inc.
发明人： Josef K. Herud
IPC分类号： F16J1/00 , B23B31/30 , F16J15/3224
摘要： The invention relates to a sealing piston, which is designed for use in a hydraulic expansion chucking device. The sealing piston comprises a pin that extends in an axial direction (A), and a seal that adjoins the pin and likewise extends in said axial direction (A). The seal comprises a sealing shaft that adjoins the pin and has a shaft radius (Rs). The seal further comprises a sealing head that adjoins the sealing shaft, wherein the sealing head comprises a circumferential sealing lip, which has a sealing radius (Rd) that is greater than the shaft radius (Rs). The sealing lip forms a contact surface in radial direction (R) for abutment and sealing against an inner wall of a bore in the expansion chucking device, and, measured in axial direction (A), has a sealing length (Ld) that is greater than the difference between the sealing radius (Rd) and the shaft radius (Rs). The invention further relates to a corresponding expansion chucking device.
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5.发明授权公开(公告)号：US11548077B2
公开(公告)日：2023-01-10
申请号：US17225499
申请日：2021-04-08
申请人： Kennametal Inc.
发明人： Josef K. Herud
摘要： A reducing sleeve for fastening a machining tool in a tool holder is described. Said reducing sleeve comprises a reducing sleeve body, which comprises a first tool-side end and a second tool holder-side end. In addition, at least one coolant supply channel is provided in the reducing sleeve body. Furthermore, a multifunctional interface is arranged at the second end and is designed for coupling to a sealing unit and a safety unit. Additionally presented is a modular system for providing a reducing sleeve assembly, which comprises such a reducing sleeve, a sealing unit, and a safety unit. In addition, a machining assembly with a tool holder, a reducing sleeve, and a machining tool is presented.
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公开(公告)号：US11534842B2
公开(公告)日：2022-12-27
申请号：US16672447
申请日：2019-11-02
申请人： KENNAMETAL INC.
发明人： Jean Luc Dufour
摘要： A cutting insert includes an upper surface having a circular cutting edge, a lower surface opposite the upper surface, an exterior sidewall between the upper surface and the lower surface, and an interior sidewall defining a hole extending from the upper surface to the lower surface. The interior sidewall includes an upper interior sidewall portion and a lower interior sidewall portion. The lower interior sidewall portion increases in radius with respect to a downward direction of the cutting insert. The lower interior sidewall portion includes a plurality of recessed portions positioned about a circumferential direction of the lower interior sidewall portion.
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7.发明授权公开(公告)号：US11471952B2
公开(公告)日：2022-10-18
申请号：US16824537
申请日：2020-03-19
申请人： Kennametal Inc.
摘要： A rotary cutting tool includes a tool shank, a replaceable cutting head mounted on the tool shank, a coupling pin, and an actuation member. In one embodiment, the coupling pin has a cylindrical portion with a reduced-diameter portion defined by a pair of angled side walls separated by a bottom surface for cooperating with a non-threaded portion at one end of the actuation member. In another embodiment, the coupling pin has a cylindrical portion with a notch with a pair of side walls for cooperating with a frustoconical member at one end of the actuation member. When assembled, a pair of V-shaped contact surfaces on the cutting head engage a pair of oppositely facing V-shaped contact surfaces on the tool shank to provide stability against the momentum created by cutting forces in two different directions and securely hold the cutting head in place during machining operations.
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公开(公告)号：US20220325803A1
公开(公告)日：2022-10-13
申请号：US17226964
申请日：2021-04-09
申请人： Kennametal Inc.
摘要： A valve seat assembly includes a body having an insert pocket with an axially extending inner surface and a radially extending bottom surface. The valve seat further includes an insert disposed within the insert pocket of the body. The insert includes an axially extending outer surface and a radially extending bottom surface for mating with the axially extending inner surface and a radially extending bottom surface of the insert pocket of the body. The axially extending inner surface of the body is formed with a non-zero reverse taper angle, A4, for securing the insert within the insert pocket of the body. The axially extending outer surface of the insert is formed with a reverse taper angle, A5, equal to or greater than zero degrees. A valve assembly includes a valve and the valve seat assembly in reciprocating contact with the valve.
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公开(公告)号：US20220288704A1
公开(公告)日：2022-09-15
申请号：US17198856
申请日：2021-03-11
申请人： Kennametal Inc.
发明人： Brandon J. Kenno
摘要： Cutting tools (14) and cutting tool assemblies (10) include a friction ring (79). The friction ring (79) is provided in (disposed/secured within) a retaining groove (32) of a shank (30) of the cutting tool (14). The friction ring (79) can be formed from a resilient material or materials (150). The friction ring (79) can be secured in the retaining groove (32) by a retainer ring (80). The cutting tools (14) can also include a shank (30) having an increased diameter to provide increased strength and allow for a heavier cutting portion (28) of the cutting tool (14). The cutting tools (14) and cutting tool assemblies (10) can also include a washer (100) fitted about the shank (30) and positioned adjacent to a back side (26) of the cutting portion (28) of the cutting tool (14) for stabilizing the cutting tool body (22) in relation to a cutting tool holder (12).
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公开(公告)号：US11376817B2
公开(公告)日：2022-07-05
申请号：US16931927
申请日：2020-07-17
申请人： Kennametal Inc.
发明人： Martin G. Perez , Michael J. Meyer , Qingjun Zheng
IPC分类号： B32B15/01 , B32B15/18 , C22C29/08 , B32B18/00 , B32B7/05 , C22C38/08 , B32B7/027 , C22C19/03 , C22C1/04 , B32B15/16 , C22C19/07 , C22C38/10
摘要： Wear resistant articles are described herein which, in some embodiments, mitigate CTE differences between wear resistant components and metallic substrates. In one aspect, an article comprises a layer of sintered cemented carbide bonded to a layer of iron-based alloy via a metal-matrix composite bonding layer, wherein coefficients of thermal expansion (CTE) of the sintered cemented carbide layer, metal matrix composite bonding layer, and iron-based alloy layer satisfy the relation: x = ( C T E WC - C T E M M C ) ( C T E M M C - C T E Fe ) wherein 0.5≤x≤2 and CTE WC, CTE MMC and CTE Fe are the CTE values for the sintered cemented carbide, metal matrix composite, and iron-based alloy in 1/K respectively at 900° C. to 1100° C.
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