Roller hemming device, roller hemming method and method for setting a hemming process

A method for setting a roller hemming process for hemming a plurality of identical component arrangements, comprising:

• guiding a hemming roller arranged on a robot using the robot in accordance with a predetermined hemming path in order to form a hemming flange of a component of a component arrangement, wherein the robot can be controlled by a control unit to influence a hemming quality of the formed hemming flange;
• detecting an actual hemming process force acting on the hemming roller by the robot during forming, wherein the hemming process force can be changed by a corresponding control of the robot by the control unit;
• and
• controlling the robot, by the control unit, to achieve a predetermined target hemming quality, taking into account the detected actual hemming process force and an actual geometry of a formed hemming flange resulting from the forming.