Automatic screwdriving system for fastening components

A screwdriving system for fastening components that require high contact pressures for screw fastening, the screwdriving system having a screwdriving unit connected to an articulated robot, the screwdriving system comprising:

• a screwdriving unit connected to an articulated robot, wherein the screwdriving unit includes a rotary drive, a torque shaft, a tool holder for a screwdriving tool and a feed head, the tool holder and the feed head being located on a common screw,
• wherein the screwdriving unit is mounted so as to be pivotable about a ball-like joint which is arranged in the common screw axis, so that a deflection of a robot axis of the articulated robot caused by contact pressures and a resulting tilted position of the screwdriving unit is compensated by pivoting of the screwdriving unit, so that the screw axis maintains a perpendicular position with respect to a plane of the components being fastened.