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    TWIST DRILL BIT
    1.
    发明公开
    TWIST DRILL BIT 有权
    SPIRALBOHRER

    公开(公告)号：EP2286945A4

    公开(公告)日：2017-05-17

    申请号：EP09746583

    申请日：2009-05-12

    申请人： SUMITOMO ELECTRIC HARDMETAL CORP

    发明人： NAKAMURA NAOHIRO ,  ABE MAKOTO

    IPC分类号： B23B51/02

    CPC分类号： B23B51/02 ,  B23B2226/27 ,  B23B2226/275 ,  B23B2251/04 ,  B23B2251/085 ,  B23B2251/14 ,  Y10T408/9097

    摘要： Provided is a double-angle twist drill that increases the quality of drilling without increasing the amount of manufacturing work or the like. A secondary cutting edge 4b is substantially parallel to the rotation axis O of the drill, and at least a rake face 10 of the secondary cutting edge is included in the flute face of a helical flute 6. A part of the flute face of the helical flute that is located along a leading edge 9 is convexly curved with respect to the normal direction of rotation of the drill, so that the secondary cutting edge 4b having a small skew angle with respect to the rotation axis can be formed as a ridge at which the flute face intersects a second flank face.

    摘要翻译： 本发明提供一种不增加制造作业量等而提高钻孔质量的双角度麻花钻。 辅助切削刃4b基本上平行于钻头的旋转轴线O，并且辅助切削刃的至少前刀面10包括在螺旋槽6的槽面中。螺旋槽的槽面的一部分 位于前缘9的凹槽相对于钻头的法线方向凸出地弯曲，从而相对于旋转轴线具有小的倾斜角的辅助切削刃4b可以形成为脊 槽面与第二侧面相交。

    DRILL
    3.
    发明公开
    DRILL 有权

    公开(公告)号：EP2698219A1

    公开(公告)日：2014-02-19

    申请号：EP12771161.2

    申请日：2012-04-11

    申请人： Mitsubishi Materials Corporation

    发明人： YANAGIDA Kazuya ,  NARUKE Koichiro

    IPC分类号： B23B51/00

    CPC分类号： B23B51/00 ,  B23B51/02 ,  B23B2251/04 ,  B23B2251/082 ,  B23B2251/085 ,  B23B2251/14 ,  B23B2251/18 ,  Y10T408/9095 ,  Y10T408/9097

    摘要： Provided is a drill, in which occurrence of non-uniform flank wear and/or of chipping at the cutting edge is prevented on the outer periphery side, and interruption of flank is also prevented on the inner periphery side.
    In the drill,
    a drill body 1 is rotatable on an axis O;
    chip evacuating flutes 4, which are open on front flanks 3 of the drill body 1 and are extended rearwards, are formed in a periphery of the drill body on its front side;
    cutting edges 6 are formed along ridge lines where the front flanks 3 intersect with wall surfaces of the chip evacuating flutes 4 facing a drill rotating direction T;
    at least first and second front flanks 3A and 3B are formed on the front flanks 3 in order of their locations in the drill rotating direction T from its leading side to its trailing side;
    a clearance angle of the second front flank 3B is greater than that of the first front flank 3A; and
    intersection lines L of the first and second front flanks 3A and 3B, cross the cutting edges 6.

    TWIST DRILL BIT
    5.
    发明公开
    TWIST DRILL BIT 有权
    扭曲钻头

    公开(公告)号：EP2286945A1

    公开(公告)日：2011-02-23

    申请号：EP09746583.5

    申请日：2009-05-12

    申请人： Sumitomo Electric Hardmetal Corp.

    发明人： NAKAMURA Naohiro ,  ABE Makoto

    IPC分类号： B23B51/00

    CPC分类号： B23B51/02 ,  B23B2226/27 ,  B23B2226/275 ,  B23B2251/04 ,  B23B2251/085 ,  B23B2251/14 ,  Y10T408/9097

    摘要： Provided is a double-angle twist drill that increases the quality of drilling without increasing the amount of manufacturing work or the like. A secondary cutting edge 4b is substantially parallel to the rotation axis O of the drill, and at least a rake face 10 of the secondary cutting edge is included in the flute face of a helical flute 6. A part of the flute face of the helical flute that is located along a leading edge 9 is convexly curved with respect to the normal direction of rotation of the drill, so that the secondary cutting edge 4b having a small skew angle with respect to the rotation axis can be formed as a ridge at which the flute face intersects a second flank face.

    摘要翻译： 本发明提供一种不增加制造作业量等而提高钻孔质量的双角度麻花钻。 辅助切削刃4b基本上平行于钻头的旋转轴线O，并且辅助切削刃的至少前刀面10包括在螺旋槽6的槽面中。螺旋槽的槽面的一部分 位于前缘9的凹槽相对于钻头的法线方向凸出地弯曲，从而相对于旋转轴线具有小的倾斜角的辅助切削刃4b可以形成为脊 槽面与第二侧面相交。

    TWIST DRILL BIT
    7.
    发明授权
    TWIST DRILL BIT 有权

    公开(公告)号：EP2286945B1

    公开(公告)日：2018-08-29

    申请号：EP09746583.5

    申请日：2009-05-12

    申请人： Sumitomo Electric Hardmetal Corp.

    发明人： NAKAMURA Naohiro ,  ABE Makoto

    IPC分类号： B23B51/02

    CPC分类号： B23B51/02 ,  B23B2226/27 ,  B23B2226/275 ,  B23B2251/04 ,  B23B2251/085 ,  B23B2251/14 ,  Y10T408/9097

    摘要： Provided is a double-angle twist drill that increases the quality of drilling without increasing the amount of manufacturing work or the like. A secondary cutting edge 4b is substantially parallel to the rotation axis O of the drill, and at least a rake face 10 of the secondary cutting edge is included in the flute face of a helical flute 6. A part of the flute face of the helical flute that is located along a leading edge 9 is convexly curved with respect to the normal direction of rotation of the drill, so that the secondary cutting edge 4b having a small skew angle with respect to the rotation axis can be formed as a ridge at which the flute face intersects a second flank face.

    DRILL AND DRILL HEAD
    8.
    发明公开
    DRILL AND DRILL HEAD 审中-公开
    钻头和钻头

    公开(公告)号：EP3199279A1

    公开(公告)日：2017-08-02

    申请号：EP15845359.7

    申请日：2015-09-28

    申请人： Mitsubishi Materials Corporation

    发明人： MABUCHI Masayuki ,  NARUKE Koichiro ,  TAKAHASHI Souhei ,  HIBI Takahiro ,  YAMAMOTO Tadashi ,  YANAGIDA Kazuya

    IPC分类号： B23B51/00

    CPC分类号： B23B51/02 ,  B23B51/00 ,  B23B51/06 ,  B23B2226/275 ,  B23B2251/04 ,  B23B2251/043 ,  B23B2251/085 ,  B23B2251/14 ,  B23B2251/18 ,  B23B2251/204 ,  B23B2251/40 ,  B23B2251/44

    摘要： A drill comprising: a drill main body; a chip discharge flute; and a tip cutting edge. The tip cutting edge includes: a first tip cutting edge which extends toward the axially posterior end as it goes toward the outside in a radial direction; and a second tip cutting edge which is disposed outside the first tip cutting edge in the radial direction. The second tip cutting edge extends toward the tip in the axis direction as it goes toward the outside in the radial direction or extends to be perpendicular to the axis. The radially inner end of the second tip cutting edge is disposed on the axially posterior end with respect to the radially outer end of the first tip cutting edge. The radially outer end of the second tip cutting edge is disposed on a virtual extension line of the first tip cutting edge.

    摘要翻译： 一种钻头，包括：钻头主体; 切屑排出槽; 和尖端切削刃。 前端切削刃包括：第一前端切削刃，其随着朝向径向外侧而向轴向后端延伸; 以及第二前端切削刃，该第二前端切削刃配置在第一前端切削刃的径向外侧。 第二前端切削刃随着朝向径向外侧而朝向轴线方向的前端延伸，或者延伸至与轴线正交。 第二顶端切削刃的径向内端相对于第一顶端切削刃的径向外端布置在轴向后端上。 第二顶端切削刃的径向外端布置在第一顶端切削刃的虚拟延长线上。

    DRILL AND METHOD FOR MANUFACTURING CUT PRODUCT USING SAME
    9.
    发明公开
    DRILL AND METHOD FOR MANUFACTURING CUT PRODUCT USING SAME 审中-公开
    使用相同的方法制造切割产品的钻孔机和方法

    公开(公告)号：EP2990145A1

    公开(公告)日：2016-03-02

    申请号：EP14787474.7

    申请日：2014-04-24

    申请人： KYOCERA Corporation

    发明人： KOGA, Kenichirou ,  IDE, Makoto

    IPC分类号： B23B51/02

    CPC分类号： B23B51/02 ,  B23B2251/046 ,  B23B2251/085 ,  B23B2251/14 ,  B23B2251/18 ,  B23B2251/408 ,  B23B2251/50 ,  B23B2251/70 ,  Y10T408/9097

    摘要： A drill according to an embodiment of the present invention has a pair of main cutting edges positioned at a front end of a drill body, a pair of first chisel edges each extending from the pair of main cutting edges toward a rotation axis, and a second chisel edge positioned between the pair of first chisel edges and intersecting with the rotation axis of the drill body. When viewing a locus of rotation of the pair of first chisel edges and a locus of rotation of the second chisel edge in a cross section taken so as to include the rotation axis, the respective locus of rotation of the pair of first chisel edges have a rectilinear shape, and respective imaginary straight lines obtained by extending the locus of rotation of the pair of first chisel edges toward the rotation axis are positioned further to a rear end side of the drill body than the locus of rotation of the second chisel edge.

    摘要翻译： 根据本发明的一个实施例的钻头具有位于钻体的前端处的一对主切削刃，从所述一对主切削刃向旋转轴线延伸的一对第一凿刀边缘， 凿刀边缘定位在该对第一凿刀边缘之间并与钻体的旋转轴线相交。 当在包括旋转轴的横截面中观察该对第一凿锋边缘的旋转轨迹和第二凿锋边缘的旋转轨迹时，该对第一凿锋边缘的相应旋转轨迹具有 直线形状，并且通过将所述一对第一凿刀边缘的旋转轨迹朝向旋转轴线延伸而获得的各个假想直线位于比所述第二凿锋边缘的旋转轨迹更远的钻体的后端侧。

    DRILL
    10.
    发明公开
    DRILL 审中-公开

    公开(公告)号：EP2774704A4

    公开(公告)日：2015-07-22

    申请号：EP11874910

    申请日：2011-11-04

    申请人： OSG CORP

    发明人： TAKAI KAZUTERU

    IPC分类号： B23B51/00

    CPC分类号： B23B51/02 ,  B23B2222/80 ,  B23B2224/24 ,  B23B2228/10 ,  B23B2251/04 ,  B23B2251/082 ,  B23B2251/085 ,  B23B2251/122 ,  B23B2251/14 ,  B23B2251/18 ,  B23B2251/40 ,  B23B2251/406 ,  Y10T408/9095

    摘要： A drill (10) in which a cutting edge (12) comprises a concave curved cutting edge portion (12b) on the inner peripheral side and a convex curved cutting edge portion (12a) on the outer peripheral side, wherein, in cross-section orthogonal to the axial center (C), a first convex curve (CL1) corresponding to the convex curved cutting edge portion (12a) and a first concave curve (CL2) corresponding to the concave curved cutting edge portion (12b) intersect each other, so that chips generated from the cutting edge (12) have a uniform, curled shape having no needle-like protrusions and accordingly a relatively short total length, and the discharging of the chips is smoother and the discharge performance is improved. Furthermore, a perpendicular relief angle (²) having an angular range of 9° to 20° is formed on a second flank (tip flank) (32) continuous from the cutting edge (12) at the tip surface (11), and a chamfer (42) having a chamfer width (CW) in the range of 0.002D to 0.02D is formed on the cutting edge (12). Therefore, wear of the flank and chipping of the cutting edge (12) are minimized, cutting resistance is reduced, and breakage of the drill (10) is minimized.