公开(公告)号：US3934836A

公开(公告)日：1976-01-27

申请号：US493477

申请日：1974-07-31

申请人： Danny L. Dunlap ,  Charles E. Huelsman ,  John H. Muhlenkamp

发明人： Danny L. Dunlap ,  Charles E. Huelsman ,  John H. Muhlenkamp

IPC分类号： B23B31/40 ,  B65H75/24 ,  F16D1/08 ,  F16D13/16 ,  B65H75/18

CPC分类号： F16D13/16 ,  B23B31/4006 ,  B65H75/242 ,  F16D1/0882

摘要： A mandrel assembly in which the mandrel segments are expanded and contracted by means of a draw rod extending through the mandrel and driven by the same motor that rotates the mandrel during winding or unwinding operations. The draw rod is fixed for rotation with the mandrel but is movable longitudinally thereof and is provided with power threads on one end which are in engagement with complementary power threads on a nut member carried by the motor shaft. A drive gear is keyed to the nut member so that it is rotatable with the nut member but capable of movement longitudinally thereof into and out of engagement with a driven gear secured to the mandrel. A nonrotatable gear segment is mounted for shifting movement with the drive gear and moves into engagement with the driven gear as the drive gear is disengaged from the driven gear to lock the mandrel against rotation. When the mandrel, and hence the draw rod, are thus locked against rotation, continued rotational movement of the nut member results in longitudinal movement of the draw rod and radial movement of the mandrel segments.

摘要翻译： 心轴组件，其中心轴段通过延伸穿过心轴的牵引杆而膨胀和收缩，并且由缠绕或退绕操作中旋转心轴的相同电机驱动。 牵引杆被固定以与心轴一起旋转，但是其可纵向移动并且在一端上设置有动力螺纹，动力螺纹与由电动机轴承载的螺母构件上的互补动力螺纹接合。 驱动齿轮与螺母构件键合，使得其能够与螺母构件一起旋转，但是其能够纵向移动，并与固定到心轴的从动齿轮啮合。 安装不可旋转的齿轮段，以便随着驱动齿轮的移动而与从动齿轮啮合，随着驱动齿轮与从动齿轮脱离啮合从而使心轴不受旋转。 当心轴因此牵引杆因此被锁定而不能旋转时，螺母构件的继续旋转运动导致拉杆的纵向移动和心轴段的径向移动。