20140076078 | SCREWING SYSTEM HAVING A TOOL HOLDER WHICH CAN BE ACTUATED IN MORE THAN ONE DIRECTION - A screwing system, in particular for assembly plants, includes a drive shaft, which is rotatable with respect to its longitudinal axis, and an output shaft, which is rotatable with respect to its longitudinal axis. The rotary motion of the output shaft is coupled via a coupling device with the rotary motion of the drive shaft. The output shaft has a tool holder configured to receive a tool. The output shaft is movable in relation to the drive shaft along its longitudinal direction in two opposite directions, and a drive device, which moves the output shaft at least in one of these directions, is provided. | 03-20-2014 |