公开(公告)号：US5876158A

公开(公告)日：1999-03-02

申请号：US984441

申请日：1997-12-03

申请人： Russell R. Beiter

发明人： Russell R. Beiter

IPC分类号： B23B31/00 ,  B23B31/107 ,  B23B31/38 ,  B23G5/16

CPC分类号： B23B31/008 ,  B23B31/1075 ,  Y10T279/17821 ,  Y10T279/3493 ,  Y10T408/70 ,  Y10T408/9048 ,  Y10T408/95

摘要： A drive collet assembly for an internal thread producing tap. The collet includes a collar that is attached to the stem of the tap using set screws. The collar is received into a recess of the body portion of a drive collet and retained therein using a spring clip. A smaller diameter aperture extends into the body portion above the recess, the aperture receiving a portion of the stem of the tap, the portion has a pair of opposed flats thereon. At least two laterally extending threaded apertures intersect the smaller diameter aperture and each receive a rigid button, a flexible element and a set screw. The set screw can be adjusted to provide a desired breakaway torque which will protect the tap from breakage should an over-torque condition occur. The flexible element will allow the rigid buttons to be forced outwardly so that the drive collet assembly spins freely about the jammed tap, rather than twisting it off. Reversing the direction of the drive will break off the chip or burr or clear the tip of the tap from touching the bottom of the hole and allow the tap to be rotated out of the hole.

摘要翻译： 用于内螺纹生产龙头的驱动夹头组件。 夹头包括一个使用固定螺钉连接到龙头杆上的套环。 套环被容纳在驱动夹头的主体部分的凹部中并使用弹簧夹保持在其中。 较小直径的孔径延伸到凹部上方的主体部分中，孔口容纳龙头的杆的一部分，该部分在其上具有一对相对的平面。 至少两个横向延伸的螺纹孔与较小直径的孔相交，并且每个接收刚性按钮，柔性元件和固定螺钉。 可以调整固定螺丝以提供所需的分离转矩，如果发生过扭矩状况，则可以保护水龙头不破裂。 柔性元件将允许刚性按钮向外强制，使得驱动夹头组件围绕卡住的水龙头自由旋转，而不是扭转它。 颠倒驱动器的方向会破坏芯片或毛刺或清除龙头的尖端接触孔的底部，并允许龙头从孔中旋出。