Ein Beitrag zur digitalen Auslegung von Fügeprozessen im Karosseriebau mit Fokus auf das Remote-Laserstrahlschweißen unter Einsatz flexibler Spanntechnik

Description

The use of pneumatically actuated clamping rolls attached to welding robots enables an increase in flexibility in remote laser welding in the Body in White shop. The design of the clamping forces, the joining devices and the component tolerances suitable for production represent a challenge. In this work, the clamping and joining process of remote laser welding with a clamping roll was investigated. The investigation was carried out by experiments and simulations with sheet metal parts made of steel and aluminum, as well as for cast aluminum components. For the simulative investigation, validated finite element simulation models were developed, which represent the use of a flexible clamping roll in the Body in White shop for the first time. The simulation models enable the calculation of clamping processes in three ways: displacement-controlled with complete specification of the roll movement, force-controlled with specification of the clamping force progress and force-regulated with specification of the desired resultant joint gaps. Based on the investigations, process- and component-related solutions for reducing the required clamping forces and the resultant joint gaps were identified and a fundamental process understanding for the novel manufacturing process was developed.