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    Milling tool
    2.
    发明授权
    Milling tool 有权

    公开(公告)号：US11059112B2

    公开(公告)日：2021-07-13

    申请号：US16309147

    申请日：2018-01-16

    Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.

    Inventor： Keiji Kinoshita ,  Kouki Matsubara

    IPC: B23C5/22

    Abstract: A milling tool includes: a body having an outer circumferential surface formed around a central axis; a cutting insert having a rake surface, a flank surface, and a cutting edge formed by a ridgeline of the rake surface and the flank surface; and a screw attaching the cutting insert to the body. The outer circumferential surface has an insert attachment portion. The insert attachment portion is defined by a first seat surface continuing to the outer circumferential surface and a second seat surface continuing to the first seat surface and having a flat portion provided with a screw hole in which the screw is inserted. The cutting edge is formed of a sintered material containing at least one of cubic boron nitride and polycrystalline diamond. In a cross section perpendicular to the central axis, a first angle formed by a first direction and a second direction is an acute angle.

    Rotary cutting tool cutting insert and rotary cutting tool
    3.
    发明授权
    Rotary cutting tool cutting insert and rotary cutting tool 有权

    公开(公告)号：US12226840B2

    公开(公告)日：2025-02-18

    申请号：US17433606

    申请日：2020-09-02

    Applicant: Sumitomo Electric Hardmetal Corp.

    Inventor： Kouki Matsubara ,  Sachie Goto ,  Kohei Ito ,  Toya Nonen

    IPC: B23C5/10 ,  B23B51/00

    Abstract: A straight line along the second line segment and a straight line along the fourth line segment form an acute angle. The straight line along the second line segment and the straight line along the third line segment form an obtuse angle. The straight line along the first line segment and the straight line along the fourth line segment form an obtuse angle. Each of the third curved portion and the fourth curved portion is larger in radius of curvature than the first curved portion and larger in radius of curvature than the second curved portion. In a direction perpendicular to the bottom surface, a distance between the top surface and the bottom surface is equal to a distance between the cutting edge and the bottom surface, or is shorter than the distance between the cutting edge and the bottom surface.

    Drill holder
    4.
    外观设计
    Drill holder 有权

    公开(公告)号：USD1029060S1

    公开(公告)日：2024-05-28

    申请号：US29827693

    申请日：2022-02-22

    Applicant: Sumitomo Electric Hardmetal Corp.

    Designer： Ryusei Hamada ,  Kouki Matsubara ,  Kenta Nishi

    Abstract: FIG. 1 is a front view of a drill holder in accordance with the present design;
    FIG. 2 is a rear view thereof;
    FIG. 3 is a right side view thereof;
    FIG. 4 is a left side view thereof;
    FIG. 5 is a top view thereof;
    FIG. 6 is a bottom view thereof;
    FIG. 7 is a first perspective view thereof;
    FIG. 8 is a second perspective view thereof;
    FIG. 9 is an enlarged view of portion 9 of FIG. 1;
    FIG. 10 is an enlarged view of portion 10 of FIG. 7;
    FIG. 11 is an enlarged view of portion 11 of FIG. 8; and,
    FIG. 12 shows a drill holder in an environment of use thereof.
    The broken lines shown in the drawings represent portions of the drill holder that form no part of the claimed design.

    Cutting tool and tool body
    5.
    发明授权
    Cutting tool and tool body 有权

    公开(公告)号：US10155271B2

    公开(公告)日：2018-12-18

    申请号：US15311355

    申请日：2015-06-03

    Applicant: Sumitomo Electric Hardmetal Corp.

    Inventor： Yusuke Koike ,  Kouki Matsubara ,  Katsuya Nakakihara ,  Atsuhiko Maeta

    IPC: B23C5/00 ,  B23C5/22 ,  B23C5/06

    Abstract: A cutting tool including: a tool body (2) provided with an insert support seat (5) including a major seat surface (5a) that supports a bearing surface of a cutting insert, a plurality of seat side surfaces (5b, 5c) that supports side surfaces of the cutting insert at different positions, and a thinned portion (5d) continuous with the major seat surface and the seat side surfaces; and a cutting insert attached to the insert support seat, wherein a ridge at a position where the major seat surface and the thinned portion intersect, a ridge at a position where the seat side surface and the thinned portion intersect, and a ridge at a position where the thinned portions continuous with each other intersect are each formed of a convex arc curved surface.

    CUTTING INSERT AND MILLING CUTTER
    7.
    发明申请
    CUTTING INSERT AND MILLING CUTTER 有权
    切割刀和切割刀

    公开(公告)号：US20160375506A1

    公开(公告)日：2016-12-29

    申请号：US14902445

    申请日：2015-04-16

    Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.

    Inventor： Yusuke Koike ,  Kouki Matsubara ,  Katsuya Nakakihara ,  Atsuhiko Maeta

    IPC: B23C5/20 ,  B23C5/06

    CPC classification number: B23C5/207 ,  B23C5/06 ,  B23C5/2221 ,  B23C2200/0411 ,  B23C2200/126 ,  B23C2210/168

    Abstract: A cutting insert includes a first surface and a second surface each of which is polygonal and that face away from each other; a side surface that is continuous with the first surface and a side surface that is continuous with the second surface; a cutting edge formed along each of a ridge where the first surface and the side surface intersect and a ridge where the second surface and the side surface intersect; a bearing surface formed in each of a part the first surface and a part of the second surface adjacent to an insert center, the bearing surfaces disposed parallel to each other; and a recessed portion that separates the side surface that is continuous with the first surface from the side surface that is continuous with the second surface. The cutting edge includes three corner edges, a first cutting edge, and a second cutting edge, the first and second cutting edges being continuous with each other and located between each pair of the corner edges. A length of the first cutting edge is greater than that of the second cutting edge, an end portion of the first cutting edge adjacent to one of the corner edges is at a position higher than the bearing surface, and an end portion of the first cutting edge opposite to the end portion adjacent to the corner edge is at a position lower than the bearing surface. Each of the first surface, the second surface, and a cross section of the recessed portion has such a shape that outlines of the shape before and after rotation of the insert by 120° around the insert center are coincident with each other. The first surface and the second surface have the same shape, and the second cutting edge of the second surface is located at a corner at which the first cutting edge of the first surface is located.

    Abstract translation: 切削刀片包括第一表面和第二表面，每个表面是多边形的并且彼此背离; 与第一表面连续的侧表面和与第二表面连续的侧表面; 沿着第一表面和侧表面相交的脊中的每一个形成的切割刃和第二表面和侧表面相交的脊; 承载表面，其形成在所述第一表面的一部分和邻近所述插入中心的所述第二表面的一部分中，所述支承表面彼此平行设置; 以及凹部，其从与第二表面连续的侧表面分离与第一表面连续的侧表面。 切割刃包括三个角部边缘，第一切割边缘和第二切割边缘，第一和第二切割刃彼此连续并位于每对拐角边缘之间。 所述第一切削刃的长度大于所述第二切削刃的长度，所述第一切削刃的与所述角部边缘中的一个相邻的端部处于比所述支承面高的位置，所述第一切削刃的端部 与邻接于角边缘的端部相对的边缘位于比支承表面低的位置。 凹部的第一表面，第二表面和横截面中的每一个都具有这样的形状：插入物在插入中心周围旋转120°之前和之后的形状轮廓彼此一致。 第一表面和第二表面具有相同的形状，并且第二表面的第二切割边缘位于第一表面的第一切割边缘所在的拐角处。

    INDEXABLE CUTTING INSERT FOR MILLING
    9.
    发明申请
    INDEXABLE CUTTING INSERT FOR MILLING 有权
    可选切割刀片

    公开(公告)号：US20140193216A1

    公开(公告)日：2014-07-10

    申请号：US14240299

    申请日：2013-09-10

    Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.

    Inventor： Atsuhiko Maeta ,  Kouki Matsubara ,  Katsuya Nakakihara ,  Yoshinari Nagami

    IPC: B23C5/20 ,  B23B27/16

    CPC classification number: B23C5/207 ,  B23B27/1611 ,  B23C2200/0455 ,  B23C2200/201 ,  B23C2200/203 ,  B23C2200/208 ,  Y10T407/23

    Abstract: An object is to provide a cutting insert for milling that has a minor cutting edge for wiping to achieve improved machined surface quality. A minor cutting edge 3 at a corner includes two circular cutting edge portions 3a and 3a joined to major cutting edges 2 on both sides of the corner and a straight cutting edge portion 3b located between the two circular cutting edge portions 3a. The cutting insert satisfies the following conditions: 0.05 TA≦L1≦0.4 TA, 0.1 L1≦L≦0.5 L1, and h≦15 μm, where TA is the radius of a circle inscribed inside the major cutting edges 2 as viewed in the thickness direction of the cutting insert, L1 is the length of the minor cutting edge 3 in the longitudinal direction of the straight cutting edge portion 3b, L is the length of the straight cutting edge portion 3b, and h is the height of the minor cutting edge 3.

    Abstract translation: 目的是提供一种用于铣削的切削刀片，其具有用于擦拭的小切削刃以实现改进的加工表面质量。 拐角处的副切割刃3包括与角部两侧的主切削刃2连接的两个圆形切削刃部3a，3a以及位于两个圆形切削刃部3a之间的直线切削刃部3b。 切削刀片满足以下条件：0.05 TA＆nlE; L1＆nlE; 0.4 TA，0.1 L1＆nlE; L＆nlE; 0.5 L1和h＆nlE; 15μm，其中TA是在主切削刃2内部刻划的圆的半径， 切削刀片的方向L1是次切削刃3在直切削刃部3b的长度方向上的长度，L是直切削刃部3b的长度，h是次切削刃的高度 3。

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