DRILL SPINDLE UNIT
    3.
    发明申请
    DRILL SPINDLE UNIT 审中-公开
    钻头组件

    公开(公告)号:US20110255930A1

    公开(公告)日:2011-10-20

    申请号:US13127516

    申请日:2009-11-03

    IPC分类号: B23Q5/32 B23B47/00

    摘要: A drill spindle unit includes a housing, and a rotatable and longitudinally displaceable drill spindle provided with axial keyways for cooperation with internal projections of a drill spindle surrounding rotation drive sleeve, and a screw thread for cooperation with an internal thread of a drill spindle surrounding feed drive sleeve. Bearings for radial as well as axial support of the drill spindle relative to the housing are provided. The radial support bearings are arranged to transfer radial forces only, and a thrust bearing is arranged to transfer axial forces between the housing and the drill spindle. The thrust bearing is associated with an axial load sensing device by which signals are generated in response to the axial load applied on the drill spindle.

    摘要翻译: 钻头主轴单元包括壳体,以及可旋转和纵向移位的钻杆,其设置有用于与围绕旋转驱动套筒的钻杆的内部突出部配合的轴向键槽,以及用于与钻头心轴周围进给的内螺纹配合的螺纹 驱动套筒 提供用于径向的轴承以及相对于壳体的钻轴的轴向支撑。 径向支撑轴承仅布置成仅传递径向力,并且推力轴承布置成在壳体和钻杆之间传递轴向力。 推力轴承与轴向负载感测装置相关联,通过该轴向载荷感测装置响应于施加在钻杆上的轴向载荷而产生信号。