The steel specialist voestalpine welds drive axle bridges for commercial vehicles at its Linz site using an interlinked robot system from CLOOS. The complex system consists of a total of four welding stations and seven robots. The axle bridges are transported from station to station fully automatically via a shuttle system. At the first station, two QIROX QRC 350 robots weld the root layers to both sides of the axle bridges. The two half shells are inserted using an automatic device. The double station positioner swivels the clamped axle bridge into the welding station with a vertical rotary movement. For optimum welding results, the robots are equipped with a laser offline sensor that precisely measures the positions of the weld seams and adjusts the welding parameters accordingly. After these work steps, the shuttle system transports the finished welded axle bridge fully automatically to the next production station.