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    • 9. 发明授权
    • Spindle motor powered drawbar
    • 主轴电机动力牵引杆
    • US4413938A
    • 1983-11-08
    • US332608
    • 1981-12-21
    • Steven R. Kuczenski
    • Steven R. Kuczenski
    • B23B31/26B23C5/26
    • B23B31/266Y10T408/95Y10T409/309464
    • The spindle of a machine tool has a drawbar disposed therein for threaded engagement into and out of the toolholder inserted into the spindle bore to releaseably secure the toolholder within the spindle. Splined on the rearward end of the drawbar distal from the spindle is a spur gear which is shiftable into and out of engagement with a cluster gear driven by the spindle drive motor. When the spur gear on the rearward drawbar end is shifted into engagement with the cluster gear driven by the spindle drive motor, the drawbar will be rotatably threaded either into or out of the toolholder shank by the spindle drive motor and thus, the need for a separate motor to rotatably drive the drawbar is eliminated.
    • 机床的主轴具有设置在其中的拉杆,用于螺纹接合进入和插入插入主轴孔中的刀夹,以将刀架可释放地固定在主轴内。 在主轴远离牵引杆的后端的花键是正齿轮,其能够与由主轴驱动电动机驱动的集群齿轮移动和脱离接合。 当后拉杆端的正齿轮与由主轴驱动马达驱动的集群齿轮移动接合时,牵引杆将通过主轴驱动马达可旋转地旋入到刀柄上或从刀驱动马达出来,因此需要一个 消除了单独的马达以可旋转地驱动牵引杆。