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    MULTI-FLUTE ENDMILL
    1.
    发明公开
    MULTI-FLUTE ENDMILL 审中-公开
    MEHRFACH GERILLTERSCHAFTFRÄSER

    公开(公告)号：EP2878404A4

    公开(公告)日：2016-03-23

    申请号：EP13823001

    申请日：2013-07-25

    申请人： HITACHI TOOL ENG

    发明人： BABA MAKOTO ,  HIRAI JUN-ICHI

    IPC分类号： B23C5/10

    CPC分类号： B23C5/10 ,  B23C2210/082 ,  B23C2210/321 ,  B23C2210/40 ,  B23C2210/44 ,  B23C2210/48 ,  B23C2210/54 ,  B23C2250/12 ,  Y10T407/1948

    摘要： An effect of discharging chips from gashes (7) and an effect of guiding them to flutes (8) are enhanced, when a multi-flute endmill having gashes and flutes is used to perform high-speed and high-feed cutting processing on a thin-walled member of an impeller or the like made of a difficult-to-cut alloy. The rake face of a cutting edge (3) is formed, from the side of a rotation axis O to a peripheral side in a radial direction, with the rake face (6a) of a end cutting edge (6), and the rake face (4a) of a peripheral cutting edge (4) that is adjacent to the rake face (6a) of the end cutting edge (6), that forms a face different from the rake face (6a) of the end cutting edge (6) and that also serves as the rake face of a corner R edge (5), and the intersection between a convex ridge line (64) located in a boundary between the rake face (6a) of the end cutting edge (6) and the rake face (4a) of the peripheral cutting edge (4) and a convex ridge line (68) located in a boundary between the rake face (6a) of the end cutting edge (6) and the bottom surface (8b) of the flute (8) is moved into the side of the rotationaxis O in the radial direction with respect to a boundary between the flank face (5b) of the corner R edge (5) and the flank face (6b) of the end cutting edge (6).

    摘要翻译： 当使用具有凹槽和凹槽的多槽立铣刀对薄片进行高速高加工切割加工时，提高了从石头（7）中排出碎屑的效果和将其引导到凹槽（8）的效果 由难切削合金制成的叶轮等的壁构件。 切削刃（3）的前刀面从旋转轴线O的一侧到径向的周边，与前端刃（6）的前刀面（6a）形成，前刀面 （6）的前刀面（6a）相邻的周边切削刃（4）的与所述端切削刃（6）的前刀面（6a）相对的面（4a） 并且还用作角R边缘（5）的前刀面，并且位于端切削刃（6）的前刀面（6a）与前刀刃（6）之间的边界的凸脊线（64） 外周切削刃（4）的表面（4a）和位于端部切削刃（6）的前刀面（6a）与长槽底面（8b）之间的边界中的凸脊线（68） 8）相对于拐角R边缘（5）的侧面（5b）与端部切削刃（6）的侧面（6b）之间的边界在径向方向上移动到旋转轴线O侧， 。

    RADIUS END MILL, AND CUTTING METHOD
    3.
    发明公开
    RADIUS END MILL, AND CUTTING METHOD 审中-公开
    SCHAFTFRÄSERUND SCHNEIDEVERFAHREN

    公开(公告)号：EP3067136A4

    公开(公告)日：2017-04-05

    申请号：EP14859816

    申请日：2014-11-08

    申请人： MITSUBISHI HITACHI TOOL ENG LTD

    发明人： BABA MAKOTO

    IPC分类号： B23C5/10 ,  B23C3/28

    CPC分类号： B23C5/10 ,  B23C3/28 ,  B23C3/30 ,  B23C5/1009 ,  B23C5/1018 ,  B23C2200/36 ,  B23C2210/08 ,  B23C2210/084 ,  B23C2210/126 ,  B23C2210/54 ,  B23C2222/28

    摘要： [Problem] To ensure obtaining highly accurate finishing surface roughness on a work material simultaneous with ensuring highly efficient cutting work. [Solution] The present invention includes a plurality of end cutting edges 3 arrayed around a central axis O and a plurality of arc-shaped radius end cutting edges 6 continuous with the end cutting edges 3 on an outer peripheral side in a radial direction. The end cutting edge 3 is divided into an inner peripheral side end cutting edge 4 and an outer peripheral side end cutting edge 5 in a radial direction. A lowest point Pb of the radius end cutting edge 6 during cutting is positioned in a section from a boundary P2 between the outer peripheral side end cutting edge 5 and the radius end cutting edge 6 to a boundary P4 between the radius end cutting edge 6 and the peripheral cutting edge 7. Second surfaces 40 of the plurality of inner peripheral side end cutting edges 4 are coupled at a part close to the central axis O. A region of coupled second surfaces 40 is continuous from a region including the central axis O to outer peripheral sides of respective inner peripheral side end cutting edges 4 in a radial direction in a strip shape. A width of the strip-shaped region gradually enlarges from the central axis O side to an outer peripheral side in a radial direction.

    摘要翻译： [问题]确保在确保高效切割工作的同时获得高精度的精加工表面粗糙度。 [解决方案]本发明包括沿中心轴线O排列的多个端部切削刃3和在径向的外周侧上与端部切削刃3连续的多个弧形半径端部切削刃6。 末端切削刃3在径向上分为内周侧端切削刃4和外周侧切削刃5。 在切削过程中半径端切削刃6的最低点Pb位于从外周侧端切削刃5与半径端切削刃6之间的边界P2到半径端切削刃6和 多个内周侧端切削刃4的第二表面40在接近中心轴线O的部分处连接。耦合的第二表面40的区域从包括中心轴线O的区域连续到 各内周侧端切削刃4的外周侧呈带状的径向。 带状区域的宽度从中心轴线O侧向径向的外周侧逐渐扩大。