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    • 3. 发明公开
    • 스로우 어웨이 팁
    • 横向提示
    • KR1020060105052A
    • 2006-10-09
    • KR1020067016103
    • 2004-12-24
    • 스미또모 덴꼬오 하드메탈 가부시끼가이샤
    • 오키타야스히코가나다야스유키후카야도모히로
    • B23B27/22B23B27/20
    • B23B27/143B23B2200/0428B23B2200/049B23B2200/28B23B2200/321B23B2200/3609B23B2226/125Y10T407/235Y10T407/24Y10T407/26Y10T407/27
    • A throw-away tip, wherein cemented carbide sintered bodies (1) containing cubic system boron nitride are joined to the apex parts (5) of a polygonal tool body (2) and cutting edges and tip breakers are formed on the cemented carbide sintered bodies (1). Chamfered parts are formed at the intersected parts of the upper surface to the side surfaces of the cemented carbide sintered body (1). The tip breaker comprises a projected part (6). An angle (Theta) formed by ridge lines (6b, 6c) at the apex of the projected part (6) or a tangential line at a point bisecting the ridge lines (6b, 6c) and the bisector (9a) of an apex angle and the ratio of a distance (L1) between a first intersection point (P) where two ridge lines (6b, 6c) at the apex of the projected part (6) are intersected with each other and the end point (S) of one ridge line (6b) to a distance (L2) between a second intersection point (Q) of a straight-line passing the first intersection point (P) and the end point (S) to the outer periphery of the tool body (2) and the first intersection point (P) are within specified ranges.
    • 一种丢弃尖端,其中含有立方体系氮化硼的硬质合金烧结体(1)与多边形工具体(2)的顶点部分(5)连接,切割边缘和尖端断裂器形成在硬质合金烧结体 (1)。 在上表面的相交部分与硬质合金烧结体(1)的侧表面之间形成倒角部分。 尖端断路器包括突出部分(6)。 在突出部分(6)的顶点处由脊线(6b,6c)形成的角度(θ)或在将棱线(6b,6c)和平分线(9a)平分的点处的顶角的切线 并且在突出部分(6)的顶点处的两个脊线(6b,6c)彼此相交的第一交点(P)与第一交点(P)之间的距离(L1)与第一交点 脊线(6b)到通过第一交点(P)的直线的第二交点(Q)与端部(S)到工具主体(2)的外周的距离(L2) 第一交点(P)在规定范围内。