CUTTING INSERT AND MANUFACTURING METHOD THEREFOR
    10.
    发明公开
    CUTTING INSERT AND MANUFACTURING METHOD THEREFOR 审中-公开
    SCHNEIDEINSATZ UND HERSTELLUNGSVERFAHRENDAFÜR

    公开(公告)号:EP3195961A4

    公开(公告)日:2017-09-20

    申请号:EP15841460

    申请日:2015-09-11

    摘要: A cutting insert including a surface involved in cutting, for which a cutting tool material of a hard sintered body is used. A radius of a nose R portion is 0.4 mm or greater and 2.4 mm or less, an apex angle ± of the nose R portion is 50° or greater and 95° or less, a rake angle ² at a position of a bisecting plane of the apex angle of the nose R portion is 1° or greater and 10° or less, a chamfer provided in a cutting edge portion is a negative land with unequal width, and at least on one side of the negative land with respect to a boundary which is an apex of a nose R portion cutting edge, a width of the negative land gradually decreases from the apex of the nose R portion cutting edge to a position at which the nose R portion cutting edge is connected to a linear cutting edge. Let W1 be the width of the negative land at the apex of the nose R portion cutting edge, and W2 be the width of the negative land at both ends of the nose R portion cutting edge, then the W1 is 0.04 mm or greater and 0.2 mm or less, and a ratio of the W1 1 to the W2 is 1.5 or greater.

    摘要翻译: 本发明提供一种切削镶刀,该切削镶刀具有使用硬质烧结体的切削工具材料进行切削加工的表面。 前端R部的半径为0.4mm以上且2.4mm以下,前端R部的顶角±为50°以上且95°以下,前角R的二等分面的位置处的前角2 前端R部的顶角为1°以上且10°以下,设置于切削刃部的倒角是宽度不等的负台阶,至少在负台阶的一侧相对于边界 其是鼻部R部分切削刃的顶点,负刃带的宽度从鼻部R部分切削刃的顶点逐渐减小至鼻部R部分切削刃连接至线性切削刃的位置。 设W1是在刀尖R部分切削刃的顶点处的负台阶的宽度,并且W2是在刀尖R部分切削刃的两端处的负台阶的宽度,则W1是0.04mm或更大并且0.2 mm以下,并且W1 1与W2的比率为1.5以上。