Abstract: A method for mounting a flap (3) on a workpiece (1) in a precisely positioned fashion, in particular for mounting a vehicle door on a vehicle body. A robot guided gripping tool (5) has a securing device (14) for holding the flap (3) and a sensor system (18) permanently connected to the gripping tool (5). In a first step, the gripping tool (5) is moved, within the scope of a positioning phase (A-2), from a proximity position (37), which is independent of the position of the workpiece (1) in the working space (27) of the robot (7), into a mounting position (29) in which the flap (3) which is held in the securing device (14) is oriented with respect to the workpiece (1) in a precisely positioned fashion. To move into the mounting position (29), an iterative closed-loop control process is run through, in the course of which firstly an (actual) measured value of the sensor system (18) is generated, which value is compared with a (setpoint) measured value which is generated within the scope of a setup phase.

Abstract: In a process for manufacturing a vehicle body shell, the linking of an integral support to a forward structure of a known vehicle body shell may lead to tolerances which require readjustments of the axle geometry of the front axle. Accordingly, the bearing points of each wheel installation unit for the upper transverse control arm bearing which are situated behind one another in the longitudinal direction of the vehicle are brought to a defined distance range by a tensioning of the wheel installation unit, and a center fixation of the forward structure takes place relative to the longitudinal direction of the vehicle.