公开(公告)号：US20200215620A1

公开(公告)日：2020-07-09

申请号：US16641850

申请日：2019-05-09

申请人： SUMITOMO ELECTRIC HARDMETAL CORP.

发明人： Nozomi TSUKIHARA ,  Rintaro SUGIMOTO ,  Yutaka KOBAYASHI

IPC分类号： B23B27/14 ,  C23C16/27

摘要： A diamond-coated tool includes: a substrate; and a diamond layer that coats the substrate, wherein the diamond layer includes a first region that is in contact with the substrate, the first region includes a region S1 surrounded by an interface P between the substrate and the diamond layer and an imaginary plane V1 separated from the interface P by a distance of 2 μm, and the region S1 has crystal grains grown in random directions.

公开(公告)号：US20220388078A1

公开(公告)日：2022-12-08

申请号：US17773226

申请日：2020-10-09

申请人： SUMITOMO ELECTRIC HARDMETAL CORP.

发明人： Rintaro SUGIMOTO ,  Takashi HARADA ,  Minoru YOSHIDA

IPC分类号： B23C5/16

摘要： In a diamond-coated tool provided with a blade which includes a base material and a diamond layer formed on the base material, when a length of the blade along an extending direction thereof is denoted by L, and a thickness of the diamond layer of the blade is measured at a total number of 11 points which are arranged from one end of the blade along the extending direction thereof and separated from each other at an interval of L/10, the thickness is the same at all of the 11 points, or a ratio dmin/dmax between a minimum value dmin of the thickness and a maximum value dmax of the thickness is 0.7 or more and less than 1.

公开(公告)号：US20220339719A1

公开(公告)日：2022-10-27

申请号：US17763431

申请日：2021-06-14

申请人： SUMITOMO ELECTRIC HARDMETAL CORP. ,  Sumitomo Electric Industries, Ltd.

发明人： Rintaro SUGIMOTO ,  Takashi HARADA ,  Satoru KUKINO ,  Taisuke HIGASHI ,  Naoki WATANOBE ,  Mayuka SEGAWA

IPC分类号： B23C5/10

摘要： A tool of the present disclosure includes a tip end portion. The tip end portion has a surface. At least a part of the surface includes a plurality of protrusions, a first recess provided by contact between ends of two adjacent protrusions of the protrusions, and a second recess different from the first recess. The second recess is provided inside at least one of the protrusions or provided to extend across the two adjacent protrusions.

公开(公告)号：US20220297201A1

公开(公告)日：2022-09-22

申请号：US17642196

申请日：2020-08-18

申请人： SUMITOMO ELECTRIC HARDMETAL CORP.

发明人： Akihiko UEDA ,  Mayuka SEGAWA ,  Rintaro SUGIMOTO ,  Machiko ABE ,  Takashi HARADA ,  Satoru KUKINO

IPC分类号： B23B27/20 ,  B23B51/00

摘要： A diamond cutting tool comprises a base metal part and a diamond part joined to the base metal part, wherein the base metal part is made of an alloy containing tungsten carbide, the diamond part configures at least a cutting blade, the cutting blade comprises a portion of a rake face, a portion of a flank face, and a ridge line at which the rake face and the flank face cross, the diamond cutting tool has a region A, the region A is a region that is present bridging over the three, which are the rake face, the ridge line, and the flank face on the surface of the cutting blade, and the region A has a surface roughness Ra of not more than 0.2 μm and a concentration of tungsten element of not more than 1 mass %.