Spade Drill Insert Having Helical Margins
    3.
    发明申请
    Spade Drill Insert Having Helical Margins 有权
    螺旋钻头具有螺旋边距

    公开(公告)号:US20060159535A1

    公开(公告)日:2006-07-20

    申请号:US11307713

    申请日:2006-02-17

    IPC分类号: B23B51/00

    摘要: A spade drill insert and drilling tool assembly is provided wherein the lands of the spade drill insert have helical margins which provide increased stability during cutting operations and the holder has a clearance surface providing better chip evacuation. The margin may have a helical trailing side or leading side, a parallel helical margin, or may also include a gullet or flute adjacent the helical margin.

    摘要翻译: 提供了铲形钻头和钻孔工具组件,其中铲形钻头刀片的平台具有螺旋边缘,其在切割操作期间提供增加的稳定性,并且保持器具有提供更好的排屑的间隙表面。 边缘可以具有螺旋的后侧或前侧,平行的螺旋边缘,或者也可以包括邻近螺旋边缘的齿槽或槽纹。