Drill bit and production method
    1.
    发明授权
    Drill bit and production method 有权
    钻头和生产方法

    公开(公告)号:US09364927B2

    公开(公告)日:2016-06-14

    申请号:US13467220

    申请日:2012-05-09

    IPC分类号: E21B10/60 B23P15/28 B23B51/06

    摘要: A drill bit 1 has a drill head 3 and a shank 4. The shank 4 has a body 20, an add-on part 40 and an internal channel 50. The drill head 3 is attached to the body 20. The add-on part 40 is attached to a lateral surface 21 of the body 20 and arranged completely within a cylindrical envelope 29 that circumscribes the body 20. The internal channel is configured within the add-on part and/or between the add-on part 40 and the lateral surface 21.

    摘要翻译: 钻头1具有钻头3和柄4.柄4具有主体20,附加部分40和内部通道50.钻头3附接到主体20.附加部件 40连接到主体20的侧表面21,并且完全布置在环绕主体20的圆柱形封套29内。内部通道构造在附加部件内和/或附加部件40和外侧部件40之间。 表面21。