公开(公告)号：US5617924A

公开(公告)日：1997-04-08

申请号：US277961

申请日：1994-07-20

申请人： Wolfgang Baron ,  Erich Nold

发明人： Wolfgang Baron ,  Erich Nold

IPC分类号： B25B21/00 ,  B25B23/14 ,  B25B23/151

CPC分类号： B25B23/14 ,  B25B21/00 ,  B25B21/008

摘要： An arrangement for tightening screw connections comprises a screw spindle turnable by a screw tool, at least two-stage rotary drive for the screw spindle, the drive providing a coarse driving for pre-tightening of a screw connection and a fine driving for obtaining the desired screwing condition, a measuring value pick up for obtaining measuring values which correspond to a value of an available screwing condition, a control device for providing switching signals for the rotary drive in dependence on the measuring values determined by the measuring value pick up, the screw spindle being subdivided into at least three spindle parts, including a first spindle part connected with the drive motor for providing the coarse driving, a second spindle part, and a third spindle part, and an auxiliary drive providing the fine driving and having a drive element which together with the auxiliary drive form an independently operating structural unit which forms the second spindle part and is integrated between the first spindle part connected with the drive motor and the third spindle part carrying the mounting device, the auxiliary drive having a shaft provided with couplings for fixed connection with the first spindle part and the third spindle part, the auxiliary part further having a torque incresing transmission arranged so that the shaft is driven by the drive element through the transmission.

摘要翻译： 用于紧固螺钉连接的装置包括可由螺钉工具转动的螺杆主轴，用于螺杆主轴的至少两级旋转驱动器，该驱动器提供用于预紧螺钉连接的粗驱动，以及用于获得期望的精密驱动 旋转条件，用于获得对应于可用螺纹连接条件的值的测量值的测量值拾取，用于根据由测量值拾取确定的测量值为旋转驱动器提供切换信号的控制装置，螺钉 主轴细分为至少三个主轴部分，包括与用于提供粗动作的驱动马达连接的第一主轴部分，第二主轴部分和第三主轴部分，以及辅助驱动器，其提供精细驱动并具有驱动元件 其与辅助驱动器一起形成形成第二主轴部分并且是整体的独立操作的结构单元 所述辅助驱动器具有设置有用于与所述第一主轴部和所述第三主轴部固定连接的联接件的轴，所述辅助部还具有与所述第一主轴部和所述第二主轴部 扭矩增加传动装置被布置成使得轴由驱动元件通过变速器驱动。