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    • 3. 发明公开
    • SCHNEIDEINSATZ ZUR ZERSPANENDEN DREHBEARBEITUNG
    • EP3077142A1
    • 2016-10-12
    • EP14835650.4
    • 2014-12-01
    • Ceratizit Austria Gesellschaft m.b.H.
    • URSCHITZ, Harald
    • B23B27/16
    • B23B27/1618B23B2200/081B23B2200/082
    • The invention relates to a cutting insert (1) for the rotary machining of a workpiece, comprising: an upper face (2), a lower face (3), a circumferential lateral face (4), and at least cutting edge (5) formed at least on a cutting line between the upper face (2) and the lateral face (4). The cutting edge (5) has at least one cutting corner (5a), which is rounded in a top view of the upper face (2), and cutting edge portions (5b) adjoining the cutting corner (5a) on both sides. The upper face (2) is formed as a rake face (7) so as to adjoin the cutting edge (5) in the region of the cutting corner (5a) and the adjoining cutting edge portions (5b), said rake face sloping downward in the direction of the lower face (3) with increasing distance from the cutting edge (5). The rake face (7) has a protruding convex bead (9) which extends at a distance from the cutting edge (5) at least in the region of the cutting corner (5a). The rake face (7) extends on a bead (9) face facing away from the cutting edge towards a rake base (8) where the rake face (7) has a shorter distance to the lower face (3) than at the bead (9) face facing the cutting edge (5).
    • 本发明涉及一种用于工件的旋转加工的切削刀片(1),包括:上表面(2),下表面(3),周向侧面(4)和至少切削刃(5) 至少在上表面(2)和侧面(4)之间的切割线上形成。 切削刃(5)具有至少一个切削角(5a),其在上表面(2)的俯视图中是圆形的,以及与两侧的切割角(5a)相邻的切削刃部分(5b)。 上表面(2)在切削角(5a)和邻接的切削刃部分(5b)的区域中形成为前刀面(7)以与切削刃(5)相邻,所述前刀面向下倾斜 沿着与切削刃(5)的距离增加的下表面(3)的方向。 前刀面(7)具有至少在切割角(5a)的区域中与切削刃(5)一定距离延伸的凸出凸珠(9)。 前刀面(7)在背离切削刃的胎圈(9)面上延伸朝向前刀面(8)的前刀面(7),其中前刀面(7)的距离比下胎面(3)的距离小于胎圈 9)面对切削刃(5)。