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    • 2. 发明授权
    • Threading machine die head
    • 穿线机模头
    • US5199928A
    • 1993-04-06
    • US878297
    • 1992-05-06
    • Paul W. GressMichael R. Sanner
    • Paul W. GressMichael R. Sanner
    • B23G5/12
    • B23G5/12Y10T408/20Y10T408/551
    • An annular thread cutting die head for a power driven threading machine is comprised of an annular support plate assembly supporting a plurality of radially displaceable threading cutting dies spaced apart about the axis of the die head, and a cam plate assembly coaxial with and pivotal relative to the support plate assembly to radially displace the cutting dies. The cam plate assembly is spring biased to pivot relative to the support plate assembly in the direction to radially retract the cutting dies, and pivoting in the latter direction is controlled by a keeper mounted on the support plate assembly and engaging a keeper track on the cam plate assembly. The keeper is mounted on the support plate assembly for pivotal displacement about a keeper axis parallel to the die head axis, and pivotal displacement of the keeper is controlled by a lever mechanism actuated by a workpiece being threaded to provide for progressive displacement of the cam plate assembly and receding displacement of the cutting dies during the threading operation.
    • 用于动力驱动穿线机的环形螺纹切割模头包括环形支撑板组件,所述环形支撑板组件支撑围绕模头的轴线间隔开的多个可径向移位的穿线切割模具,以及凸轮板组件,其相对于 支撑板组件以径向移动切割模具。 凸轮板组件被弹簧偏置以在沿着径向缩回切割模具的方向上相对于支撑板组件枢转,并且在后一方向上的枢转由安装在支撑板组件上的保持器控制,并且与凸轮上的定位轨道接合 板组装。 保持器安装在支撑板组件上以围绕平行于模头轴线的保持器轴线枢转移动,并且保持器的枢转位移由通过螺纹驱动的工件致动的杠杆机构来控制,以提供凸轮板的逐渐移位 螺纹操作期间切割模具的组装和后退位移。