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    Cutting insert
    1.
    发明授权
    Cutting insert 有权

    公开(公告)号：US11110526B2

    公开(公告)日：2021-09-07

    申请号：US16463803

    申请日：2017-11-30

    Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.

    Inventor： Yusuke Koike ,  Yasuyuki Kanada ,  Atsuhiko Maeta ,  Tomoyuki Fukuyama ,  Yoshinari Nagami ,  Yuta Morisaki

    IPC: B23C5/06 ,  B23C5/22 ,  B23C5/20

    Abstract: A cutting insert according to the present disclosure includes a first surface, a second surface, a side surface, and a cutting edge. The first surface has a rake face continuous to the cutting edge. The cutting edge has a corner cutting edge, a flat cutting edge, and a main cutting edge. The rake face has a first rake face portion, a second rake face portion, and a third rake face portion, the first rake face portion being continuous to the flat cutting edge, the second rake face portion being continuous to the main cutting edge, the third rake face portion being continuous to the corner cutting edge and being located between the first rake face portion and the second rake face portion. The rake face is provided with a level difference portion.

    Vibration cutting insert
    2.
    发明授权
    Vibration cutting insert 有权

    公开(公告)号：US10814401B2

    公开(公告)日：2020-10-27

    申请号：US16304378

    申请日：2017-05-17

    Applicant: SUMITOMO ELECTRIC HARDMETAL CORP. ,  CITIZEN MACHINERY CO., LTD. ,  CITIZEN WATCH CO., LTD.

    Inventor： Tomoyuki Fukuyama ,  Kazuhiko Sannomiya

    IPC: B23B27/22 ,  B23B27/14 ,  B23B1/00

    Abstract: A vibration cutting insert includes a top surface having a rake face and a breaker face, a first side surface, a second side surface, and a bottom surface. In a cross section which includes a bisector of an angle formed between a first ridgeline and a second ridgeline when viewed in a direction from the top surface toward the bottom surface, and which is parallel to the direction from the top surface toward the bottom surface, a rake angle formed between the rake face and a plane parallel to the bottom surface has a positive angle. The angle formed between the first ridgeline and the second ridgeline is an acute angle. The rake face constitutes a cylindrical surface. The breaker face constitutes a flat surface.

    VIBRATION CUTTING INSERT
    3.
    发明申请
    VIBRATION CUTTING INSERT 审中-公开

    公开(公告)号：US20190291188A1

    公开(公告)日：2019-09-26

    申请号：US16304378

    申请日：2017-05-17

    Applicant: SUMITOMO ELECTRIC HARDMETAL CORP. ,  CITIZEN MACHINERY CO., LTD. ,  CITIZEN WATCH CO., LTD.

    Inventor： Tomoyuki Fukuyama ,  Kazuhiko Sannomiya

    IPC: B23B27/14

    Abstract: A vibration cutting insert includes a top surface having a rake face and a breaker face, a first side surface, a second side surface, and a bottom surface. In a cross section which includes a bisector of an angle formed between a first ridgeline and a second ridgeline when viewed in a direction from the top surface toward the bottom surface, and which is parallel to the direction from the top surface toward the bottom surface, a rake angle formed between the rake face and a plane parallel to the bottom surface has a positive angle. The angle formed between the first ridgeline and the second ridgeline is an acute angle. The rake face constitutes a cylindrical surface. The breaker face constitutes a flat surface.

    CUTTING-OFF PROCESSING TOOL
    5.
    发明申请
    CUTTING-OFF PROCESSING TOOL 审中-公开

    公开(公告)号：US20190232378A1

    公开(公告)日：2019-08-01

    申请号：US16304788

    申请日：2017-10-30

    Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.

    Inventor： Tomoyuki Fukuyama ,  Junya Okida ,  Yosuke Shimamoto

    IPC: B23B27/04 ,  B23B27/22

    CPC classification number: B23B27/04 ,  B23B27/22

    Abstract: The upper surface includes a first breaker projection face extending along the first side surface, a second breaker projection face extending along the second side surface, and a rake face located between the first breaker projection face and the second breaker projection face in top view. In a direction from the rear surface to the front surface, a first front end of the first breaker projection face is located ahead of a second front end of the second breaker projection face. A cutting edge has a first cutting edge portion and a second cutting edge portion. In a direction perpendicular to the reference surface, the second breaker projection face is lower than the first breaker projection face, and a boundary between the first cutting edge portion and the second cutting edge portion is lower than the second breaker projection face.

    Cutting insert
    6.
    发明授权
    Cutting insert 有权

    公开(公告)号：US10118228B2

    公开(公告)日：2018-11-06

    申请号：US14917229

    申请日：2014-06-20

    Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.

    Inventor： Shinya Ikenaga ,  Yosuke Shimamoto ,  Tomoyuki Fukuyama ,  Junya Okida ,  Masanobu Ueda

    IPC: B23B27/04 ,  B23B27/22 ,  B23B27/14 ,  B23B29/04

    Abstract: A cutting insert includes a leading cutting edge having a rake angle in the range of 20° to 35° in a central region in a width direction; and a rake face having a breaker groove formed in the central region in the width direction and land portions formed in both end regions in the width direction. The land portions have a rake angle smaller than the rake angle in the central region in the width direction. The breaker groove includes opposing side faces separated from each other by a distance that decreases with increasing distance from the leading cutting edge and four shoulder portions of the same height that are formed on the opposing side faces at positions above the land portions, two of the shoulder portions being closer to the leading cutting edge and to outer sides in the width direction than the other two shoulder portions are.

    Cutting insert for drill, and drill
    9.
    发明授权
    Cutting insert for drill, and drill 有权

    公开(公告)号：US11446742B2

    公开(公告)日：2022-09-20

    申请号：US17052863

    申请日：2019-03-26

    Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.

    Inventor： Yuma Kawakami ,  Tomoyuki Fukuyama ,  Shinya Ikenaga

    IPC: B23B27/16 ,  B23B27/14 ,  B23B51/00

    Abstract: When seen in a direction perpendicular to a seating surface, the second boundary line has a first portion and a second portion, the first portion having an inclination relative to the second cutting edge portion in a counter clockwise direction, the first portion being located between the first boundary line and an intersection between the second boundary line and a straight line passing through a center of a mounting hole and perpendicular to the second cutting edge portion, the second portion being located opposite to the first portion relative to the intersection, the second portion having an inclination relative to the second cutting edge portion in a clockwise direction.

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