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    Rotary cutting tool
    2.
    发明公开
    Rotary cutting tool 有权
    Rotierendes Schneidwerkzeug

    公开(公告)号：EP2599570A1

    公开(公告)日：2013-06-05

    申请号：EP12194638.8

    申请日：2012-11-28

    申请人： UNION TOOL CO.

    发明人： Takahashi, Shoichi ,  Kakuda, Masanori

    IPC分类号： B23C5/10

    CPC分类号： B23C5/165 ,  B23C5/10 ,  B23C2210/0414 ,  B23C2226/27 ,  B23C2228/25 ,  Y10T407/1946 ,  Y10T407/1948

    摘要： To provide a rotary cutting tool in which a satisfactory cut state in which burrs and uncut portions are absent is obtained, even when counterboring is applied to a composite honeycomb member. A first cutting-chip discharge groove (2) disposed from a tool tip towards a base-end side is formed on an outer periphery of a tool body (1); a plurality of second cutting-chip discharge grooves (3), provided along a spiral disposed from the tool tip towards the base-end side so as to intersect with the first cutting-chip discharge groove (2), are formed on an outer periphery section of the tool body (1) where the first cutting-chip discharge groove (2) is absent; and a base-end-side outer periphery cutting edge (4) is formed on an intersection ridge between a rake face of a second cutting-chip discharge groove (3), which faces a direction of tool rotation, and an outer peripheral surface of the tool body (1) or an outer peripheral relief face; wherein an end cutting edge (5) is provided at a tip section of the tool body (1); a tip-side outer periphery cutting edge (6) is formed on an intersection ridge between the rake face at a tip section of a first cutting-chip discharge groove (2) and an outer peripheral surface of the tip section of the tool body (1) or an outer periphery relief face (18); and the base-end-side outer periphery cutting edge (4) is provided further towards the tool base-end side than the tip-side outer periphery cutting edge (6).

    摘要翻译： 为了提供一种其中不存在毛刺和未切割部分的令人满意的切割状态的旋转切削工具，即使在复合蜂窝构件上施加相对位置时也是如此。 在工具主体（1）的外周形成有从刀头朝向基端侧配置的第一切屑排出槽（2）。 多个第二切屑排出槽（3）沿着从刀尖向基端侧设置的与螺旋形排出槽（2）相交的螺旋形状设置在外周 不存在第一切屑排出槽（2）的工具主体（1）的截面; 并且基端侧外周切削刃（4）形成在与工具旋转方向相对的第二切屑排出槽（3）的前刀面与刀具旋转方向的外周面 工具主体（1）或外周边浮雕面; 其特征在于，在所述工具主体（1）的前端部设置有端部切削刃（5）。 尖端侧外周切削刃（6）形成在第一切屑排出槽（2）的前端部的前刀面与刀具末端部的外周面（ 1）或外周边浮雕面（18）; 并且基端侧外周切削刃（4）比前端侧外周切削刃（6）更靠近刀具基端侧。