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公开(公告)号：US11319255B2
公开(公告)日：2022-05-03
申请号：US17280939
申请日：2020-03-18
发明人： Yuh Ishida , Satoru Kukino , Michiko Matsukawa
IPC分类号： C04B35/5831 , B23B27/14
摘要： A composite sintered material includes: cubic boron nitride grains; and hexagonal boron nitride grains or the hexagonal boron nitride grains and wurtzite type boron nitride grains, wherein a dislocation density of the cubic boron nitride grains is more than or equal to 1×1015/m2 and less than or equal to 1×1017/m2, a median diameter d50 of equivalent circle diameters of the cubic boron nitride grains is more than or equal to 10 nm and less than or equal to 500 nm, and a relationship of the following expression 1 is satisfied: 0.015≤(Vh+Vw)/(Vc+Vh+Vw)≤0.5, Expression 1: where Vc represents a volume-based content ratio of the cubic boron nitride grains, Vh represents a volume-based content ratio of the hexagonal boron nitride grains, and Vw represents a volume-based content ratio of the wurtzite type boron nitride grains.
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公开(公告)号：US11208358B2
公开(公告)日：2021-12-28
申请号：US17047202
申请日：2019-09-18
IPC分类号： C04B35/5831 , B23B27/14 , C04B35/626 , C04B35/64 , C22C29/00 , C22C29/16
摘要： Provided is a cubic boron nitride sintered body including more than or equal to 85 volume percent and less than 100 volume percent of cubic boron nitride particles, and a remainder of a binder, wherein the binder contains WC, Co, and an Al compound, the binder contains W2Co21B6, and, when IA represents an X-ray diffraction intensity of a (111) plane of the cubic boron nitride particles, IB represents an X-ray diffraction intensity of a (100) plane of the WC, and IC represents an X-ray diffraction intensity of a (420) plane of the W2Co21B6, a ratio IC/IA of the IC to the IA is more than 0 and less than 0.10, and a ratio IC/IB of the IC to the IB is more than 0 and less than 0.40.
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公开(公告)号：US11052466B2
公开(公告)日：2021-07-06
申请号：US15763911
申请日：2017-08-24
发明人： Gaku Harada , Yoshinori Tanigawa , Satoru Kukino
摘要： A cutting tool according to an aspect of the present disclosure includes a cutting edge portion which contains at least one of cubic boron nitride and polycrystalline diamond. The cutting edge portion includes a rake face, a flank face, and a cutting edge. The flank face is contiguous to the rake face. The cutting edge is provided as a ridge line between the rake face and the flank face. The radius of curvature of the cutting edge is 2 μm or more and 8 μm or less.
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公开(公告)号：US20190276922A1
公开(公告)日：2019-09-12
申请号：US16086131
申请日：2017-12-19
发明人： Kazushi Takahama , Satoru Kukino
摘要： A method for manufacturing a member according to one embodiment of the present disclosure is a method for manufacturing a member having a substrate and a sprayed coating formed on a surface of the substrate. The method includes: supplying an oil into a recessed portion of the sprayed coating, a kinematic viscosity of the oil at 40° C. being more than or equal to 3 mm2/s and less than or equal to 43 mm2/s; and dry-cutting, using a cutting tool, a surface of the sprayed coating with the recessed portion supplied with the oil. A supplied amount of the oil is more than or equal to 0.1 weight % and less than or equal to 2.7 weight % with respect to an apparent weight of the sprayed coating.
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公开(公告)号：USD850503S1
公开(公告)日：2019-06-04
申请号：US29564772
申请日：2016-05-16
设计人： Satoru Kukino , Shinya Imamura , Takashi Harada
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公开(公告)号：US10307829B2
公开(公告)日：2019-06-04
申请号：US14590806
申请日：2015-01-06
发明人： Katsumi Okamura , Satoru Kukino , Tomohiro Fukaya
IPC分类号： B23B27/14 , C04B35/63 , C04B35/5831 , C04B35/626 , C04B35/628 , C04B35/645
摘要： A composite sintered body according to the present invention contains at least cubic boron nitride and a binder. Cubic boron nitride has a continuous skeleton structure as a result of bonding of a plurality of first cubic boron nitride particles to each other. The binder has a continuous structure as a result of bonding of a plurality of binder particles to each other, that are present in a region except for a bonding interface where the first cubic boron nitride particles are bonded to each other. Second cubic boron nitride particles isolated from the first cubic boron nitride particles forming the skeleton structure are dispersed in the continuous structure of the binder particles.
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公开(公告)号：US20180361485A1
公开(公告)日：2018-12-20
申请号：US16062739
申请日：2016-11-15
摘要： A cutting tool according to an aspect of the present disclosure includes a shank, a joint, and a cutting portion attached through the joint to the shank. The cutting portion includes a core and a surface portion. The surface portion is disposed around a central axis of the cutting portion to cover an outer circumferential surface of the core. The surface portion includes a cutting edge. The cutting edge is disposed on an outer circumferential surface of the surface portion and formed in a helical shape about the central axis. The surface portion is a composite sintered material including a hard phase formed of a plurality of diamond particles and a plurality of cubic boron nitride particles, and a binder phase forming the remainder.
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公开(公告)号：US20170197886A1
公开(公告)日：2017-07-13
申请号：US15327214
申请日：2016-02-24
发明人： Mayu Danda , Katsumi Okamura , Satoru Kukino
IPC分类号： C04B35/5831 , B23C5/20 , C04B35/645 , C04B35/63 , C04B35/626 , B23B27/14 , C04B35/488
CPC分类号： C04B35/5831 , B23B27/148 , B23B2224/04 , B23B2226/125 , B23B2228/44 , B23C5/20 , B23C2224/04 , B23C2226/125 , B23C2228/49 , C01F7/34 , C01F7/36 , C01G25/02 , C01P2002/50 , C01P2002/54 , C01P2004/64 , C04B35/4885 , C04B35/6261 , C04B35/6264 , C04B35/6303 , C04B35/645 , C04B2235/3206 , C04B2235/3217 , C04B2235/3225 , C04B2235/3229 , C04B2235/3244 , C04B2235/3839 , C04B2235/3843 , C04B2235/3852 , C04B2235/386 , C04B2235/3865 , C04B2235/3873 , C04B2235/3886 , C04B2235/402 , C04B2235/5436 , C04B2235/5445 , C04B2235/5454 , C04B2235/656 , C04B2235/6567
摘要： A sintered compact has a first material, a second material, and a third material. The first material is cubic boron nitride. The second material is a compound including zirconium. The third material is an aluminum oxide and the aluminum oxide includes a fine-particle aluminum oxide. The sintered compact has a first region in which not less than 5 volume % and not more than 50 volume % of the fine-particle aluminum oxide is dispersed in the second material. On arbitrary straight lines in the first region, an average value of continuous distances occupied by the fine-particle aluminum oxide is not more than 0.08 μm and a standard deviation of the continuous distances occupied by the fine-particle aluminum oxide is not more than 0.1 μm.
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公开(公告)号：US09649692B2
公开(公告)日：2017-05-16
申请号：US14382625
申请日：2013-04-09
发明人： Katsumi Okamura , Kunishige Tanaka , Satoru Kukino
CPC分类号： B23B27/145 , B23B27/148 , B23B2200/0447 , B23B2200/086 , B23B2200/201 , B23B2200/205 , B23B2222/36 , B23B2226/125 , B23C5/202 , B23C2200/086 , B23C2226/125 , Y10T407/245
摘要： A tool includes, at least on its edge, a sintered cBN compact which includes cBN particles and a bonding phase, a plurality of flutes is formed on a rake face, each of the flutes having a starting end on the edge ridgeline and causing the edge ridgeline to be wavy, and the terminal end of the flute is disposed inwardly of the edge ridgeline. It is preferable that the flute width of the flute decreases with distance from the edge ridgeline, the flute depth of the flute decreases with distance from the edge ridgeline, and the rake face has a positive rake angle.
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公开(公告)号：US11591266B2
公开(公告)日：2023-02-28
申请号：US17625750
申请日：2020-07-17
发明人： Hisaya Hama , Katsumi Okamura , Akito Ishii , Satoru Kukino
IPC分类号： C04B35/5831
摘要： A cubic boron nitride sintered material includes: more than or equal to 50 volume % and less than 80 volume % of cubic boron nitride grains; and more than 20 volume % and less than or equal to 50 volume % of a binder phase, and when an oxygen content is measured in a direction perpendicular to an interface between cubic boron nitride grains using TEM-EDX, a first region having an oxygen content larger than an average value of an oxygen content of a cubic boron nitride grain exists, the interface exists in the first region, and a length of the first region along the direction perpendicular to the interface is more than or equal to 0.1 nm and less than or equal to 10 nm.
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