Percussion blow added manually operable drilling tool
    2.
    发明授权
    Percussion blow added manually operable drilling tool 失效
    打击乐打击手动钻孔工具

    公开(公告)号:US6044918A

    公开(公告)日:2000-04-04

    申请号:US716925

    申请日:1996-09-20

    IPC分类号: B23B45/16 B25D16/00 B25B23/14

    摘要: A percussion blow added manually operable drilling tool, such as a hammerdrill, has a housing (2) containing an electric motor for rotating a tool bit chuck (9) about its axis, a control device (C) for controlling the rpm of the chuck (9) operated by the electric motor (3) which is activated by a switch (5) located on the exterior of the housing (2), and a percussion blow mechanism for periodically applying axially directed blows to a bit (10) secured in the chuck (9). The electric motor (3) is coupled to a device (12) for measuring the reaction torque. The control device (C) is connected to an evaluation unit (E) which is connected to the device (12) for measuring the reaction torque so that the rpm of the chuck can be regulated from maintaining the measured reaction torque at a maximum.

    摘要翻译: 添加了手动操作的钻孔工具(例如锤钻)的敲击打击具有包含用于围绕其轴旋转工具夹头(9)的电动马达的壳体(2),用于控制卡盘的转速的控制装置(C) (9),其由位于所述壳体(2)的外部的开关(5)启动的所述电动机(3)操作;以及冲击吹风机构,用于周期性地将轴向吹送施加到固定在所述壳体 卡盘(9)。 电动机(3)联接到用于测量反作用转矩的装置(12)。 控制装置(C)连接到评估单元(E),该评估单元连接到用于测量反作用力矩的装置(12),使得能够调节卡盘的转速以将测量的反作用转矩保持在最大值。