The machine were developed specially to meet the requirements of the Friction Stir Welding (FSW) process. The focus during the development of these machines was geared towards dynamic and precise process control as well as an intuitive control and operating concept. 4-axes gantry system – designed for high axis dynamics and precise line guidance. The integrated C-axis allows the welding head to rotate by +/-720° and enables much higher process dynamics for joining complex path trajectories with narrow radii.
Workpiece supply systems for enhanced productivity
In terms of cycle time, the rapid loading and unloading of workpieces is just as important as the dynamics and speed of the welding machine. Modular, expandable, automatic feeding systems for simultaneous welding and loading / unloading of work pieces outside of the machine. The loading and unloading of components can be done manually by the operator with the help of a manipulator or an indoor crane, or fully automated.
Friction Stir Welding
The Friction Stir Welding technology (FSW) by Grenzebach enables the joining of technically pure metals, alloys and mixed material compounds while providing a solid bond of exceptional quality. During the FSW process a rotating, wear-resistant welding tool generates frictional heat at the welding zone. The material becomes malleable and is stirred along the welding path by the welding tool without reaching the melting temperature of the joining materials. The stirred material is compacted by the tool shoulder and a solid, media and pressure-tight joint between the work pieces is formed. Compared to conventional fusion welding processes (e.g. arc welding), FSW does not require additional welding wire, inert gas or complex exhaust systems. Furthermore, FSW does not generate any discernible noise, emissions or optical radiation.