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发明公开
CN105209198A 可转位钻刀片及采用该刀片的旋转切削工具 有权

可转位钻刀片及采用该刀片的旋转切削工具
摘要：
一种刀片(10)，包括设置在顶面与侧面(12和16)相交处的四个相同切削刃(18)。每个切削刃(18)包括：设置成与第一参考圆(C1)相切的第一部分刃(20)，第一参考圆(C1)围绕所述中心安装孔(17)对准；从第一部分刃(20)延伸的第二部分刃(22)，第二部分刃(22)经由凸形弯曲部分(26)连接到第一部分刃(20)；设置成与第二参考圆(C2)相切的第三部分刃(24)，第二参考圆(C2)围绕中心安装孔(17)对准，第二参考圆(C2)具有比第一参考圆(C1)更小的直径，第三部分刃(24)经由凹形弯曲部分(28)连接到第二部分刃(22)；以及从一个相同切削刃(18)的第三部分刃(24)延伸到另一相同切削刃(18)的第一部分刃(20)的凸形弯曲转角部分(30)。
摘要（英）：

An insert (10) includes four identical cutting edges (18) disposed at the intersection of top and side surfaces surface (12 and 16). Each cutting edge (18) includes a first part edge (20) disposed tangent to a first reference circle (C1) aligned about the central mounting aperture (17); a second part edge (22) extending from the first part edge (20), the second part (22) edge being connected to the first part edge (20) via a convex curved portion (26); a third part edge (24) disposed tangent to a second reference circle (C2) aligned about the central mounting aperture (17), the second reference circle (C2) having a smaller diameter than the first reference circle (C1), the third part edge (24) being connected to the second part edge (22) via a concave curved portion (28); and a convexly curved corner portion (30) extending from the third part edge (24) of one of the identical cutting edges (18) to the first part edge (20) of another one of the identical cutting edges (18).

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