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    • 8. 发明授权
    • Portable positive feed drill
    • 便携式送料钻
    • US4890962A
    • 1990-01-02
    • US312615
    • 1989-02-16
    • Daniel L. Nydegger
    • Daniel L. Nydegger
    • B23Q5/32B23Q5/40B23Q9/00
    • B23Q5/32B23Q5/402B23Q9/0014Y10T408/18Y10T408/557Y10T408/5626Y10T408/563Y10T408/68
    • A drill spindle (62) is carried by the forward end of an elongated gear housing (12, 14). A parallel drive shaft (84) is carried by the housing (12, 14) rearwardly of the spindle (62). A parallel lead screw (92) is positioned between the spindle (62) and drive shaft (84) and is attached to a workpiece-engaging foot (20). A plurality of gears transmit rotation of the drive shaft (84) to the spindle (62) and lead screw (92). Two leader pins (182) are attached to the foot (20) and engaged by bearings (186) carried by the housing (12, 14) to slide freely relative thereto and to provide stiffness between the housing (12, 14) and the foot (20). The leader pins are spaced laterally and rearwardly from the drive shaft (84). A fluid activated pusher member (30) cooperates with the foot (20) to wedge the forward end of the drill (10) in a recessed work area. A fluid operated dog clutch (124, 132) engages rotation of the lead screw (92). Coolant may be provided through a flat profile inducer (18) and axial passages in the spindle (62) and bit (74).
    • 钻轴(62)由细长齿轮壳体(12,14)的前端承载。 平行的驱动轴(84)由壳体(12,14)承载在主轴(62)的后面。 平行导螺杆(92)定位在主轴(62)和驱动轴(84)之间,并连接到工件接合脚(20)上。 多个齿轮将驱动轴(84)的旋转传递到主轴(62)和导螺杆(92)。 两个引导销(182)连接到脚部(20)并且被由壳体(12,14)承载的轴承(186)接合以相对于其自由滑动并且在壳体(12,14)和脚部 (20)。 引导销从驱动轴(84)横向和向后间隔开。 流体激活的推动器构件(30)与脚部(20)协作以将钻孔机(10)的前端楔入凹入的工作区域。 流体操作的爪形离合器(124,132)接合丝杠(92)的旋转。 冷却剂可以通过扁平轮廓引导器(18)和主轴(62)和钻头(74)中的轴向通道来提供。