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公开(公告)号：US11046581B2
公开(公告)日：2021-06-29
申请号：US16652229
申请日：2019-06-18
发明人： Tsutomu Hirano , Satoru Kukino
IPC分类号： C04B35/5831 , C01B21/064 , B23B27/14 , B23P15/28
摘要： The polycrystalline cubic boron nitride contains a cubic boron nitride at a content greater than or equal to 98.5% by volume, and has an area rate S1 of crystal grains, the crystal grains having an equivalent circle diameter greater than or equal to 1 μm, less than or equal to 20 area % at a cross section of the polycrystalline cubic boron nitride as observed with a scanning electron microscope at a magnification of 10,000.
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公开(公告)号：US10702926B2
公开(公告)日：2020-07-07
申请号：US15776138
申请日：2017-08-10
发明人： Taisuke Higashi , Satoru Kukino
IPC分类号： B23B27/14 , B23B5/10 , B22F7/06 , B23B51/00 , B23C5/16 , C22C29/08 , C22C27/04 , B22F5/00 , B22F3/14 , B23C5/18 , C22C26/00
摘要： A rotary cutting blade material has an attaching structure forming portion that is to serve as an attaching portion to the shank, a cutting structure forming portion that is to serve as a cutting blade, and a joint portion. The cutting structure forming portion has a core portion and a surface portion provided on the attaching structure forming portion with the joint portion being interposed, and the surface portion covers at least a part of a surface of the core portion. The attaching structure forming portion includes a hard material including a hard component and one or two or more types of iron group elements, and the hard material has a Young's modulus of not more than 350 GPa. The core portion includes a cemented carbide material, and the surface portion includes PCD or CBN.
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公开(公告)号：US10676398B2
公开(公告)日：2020-06-09
申请号：US16069113
申请日：2017-08-17
发明人： Kazushi Takahama , Yusuke Matsuda , Satoru Kukino
IPC分类号： C04B35/58 , C04B35/5831 , C04B35/645 , B23B27/14 , C04B35/626 , B23F21/00
摘要： A sintered material includes cubic boron nitride grains and a binder, a grain size D50 of the cubic boron nitride grains when a cumulative value of the cubic boron nitride grains is 50% in an area-based grain size distribution being more than 0.5 μm and less than or equal to 5 μm, more than or equal to 70 volume % and less than or equal to 98 volume % of the cubic boron nitride grains being included in the sintered material, the binder being composed of A1-xCrxN, where 0≤x≤1, and a remainder, the remainder being composed of at least one of a first element and a compound including the first element and a second element, the first element being one or more elements selected from a group consisting of W, Co, Ni, Mo, Al, and Cr, the second element being one or more elements selected from a group consisting of nitrogen, carbon, oxygen, and boron.
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公开(公告)号：US10525538B2
公开(公告)日：2020-01-07
申请号：US16065223
申请日：2016-11-15
发明人： Yusuke Matsuda , Taisuke Higashi , Satoru Kukino , Takashi Kanda
IPC分类号： B23C5/10
摘要： A cutting tool includes a shaft portion and a plurality of edge region groups. The ridgeline between the first rake face portion and the first flank face portion constitutes a first cutting edge portion. The ridgeline between the second rake face portion and the second flank face portion constitutes a second cutting edge portion. As seen from the direction perpendicular to a plane tangent to the outer peripheral surface, in a state where the central axis overlaps a first end on the front end side of the first cutting edge portion, the inclination angle of the first cutting edge portion relative to the central axis is larger than the inclination angle of a straight line relative to the central axis, the straight line connecting the first end to a second end on the front end side of the second cutting edge portion.
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公开(公告)号：US20190054544A1
公开(公告)日：2019-02-21
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：US20180369924A1
公开(公告)日：2018-12-27
申请号：US16062686
申请日：2016-11-15
摘要： A cutting tool according to one aspect of the present disclosure includes an attaching portion, a cutting portion having a core portion and a surface portion, and a joint portion. The attaching portion includes a hard component and a hard material. The hard component is at least one selected from the group consisting of TiC, TiCN, W, WC, Al2O3, and a combination of at least one of CBN and diamond and at least one of W and WC. The hard material includes one or two or more types of iron group elements, and has a Young's modulus of not more than 350 GPa. The core portion includes a cemented carbide material. The surface portion includes PCD or CBN. The cutting portion has a chamfer portion. The surface portion includes a groove, a flank face, and a cutting edge. The cutting edge extends toward the attaching portion.
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公开(公告)号：US20180345380A1
公开(公告)日：2018-12-06
申请号：US15776138
申请日：2017-08-10
发明人： Taisuke Higashi , Satoru Kukino
摘要： A rotary cutting blade material has an attaching structure forming portion that is to serve as an attaching portion to the shank, a cutting structure forming portion that is to serve as a cutting blade, and a joint portion. The cutting structure forming portion has a core portion and a surface portion provided on the attaching structure forming portion with the joint portion being interposed, and the surface portion covers at least a part of a surface of the core portion. The attaching structure forming portion includes a hard material including a hard component and one or two or more types of iron group elements, and the hard material has a Young's modulus of not more than 350 GPa. The core portion includes a cemented carbide material, and the surface portion includes PCD or CBN.
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公开(公告)号：US09988314B2
公开(公告)日：2018-06-05
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 , B23B27/14 , B23C5/20 , C04B35/488 , C04B35/63 , C04B35/626 , C04B35/645
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：US20170233295A1
公开(公告)日：2017-08-17
申请号：US15504464
申请日：2016-04-20
发明人： Akito Ishii , Takashi Harada , Katsumi Okamura , Satoru Kukino
IPC分类号： C04B35/5831 , C04B35/64 , B23C5/16 , B23B27/14 , B23B51/00
CPC分类号： C04B35/5831 , B23B27/14 , B23B27/148 , B23B27/20 , B23B51/00 , B23B2222/14 , B23B2224/04 , B23B2226/125 , B23C5/16 , B23C2222/14 , B23C2224/04 , B23C2226/125 , B23C2228/49 , C04B35/583 , C04B35/64 , C04B2235/3217 , C04B2235/3225 , C04B2235/3246 , C04B2235/386 , C04B2235/5436 , C04B2235/5445 , C04B2235/6567
摘要： A sintered body of the present invention is a sintered body including a first material and cubic boron nitride. The first material is partially-stabilized ZrO2 including 5 to 90 volume % of Al2O3 dispersed in crystal grain boundaries or crystal grains of partially-stabilized ZrO2.
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