Robotic Welding of Tubular Nodes

Tubular space frames (frameworks with members orientated in 3D) are highly efficient systems from the structural point of view. Designs using such structures are being developed for major bridges. They can provide overall cost-effective solutions, as this form can achieve a much lower weight than that of an alternative conventional steel structure. A major portion of the building costs is dependent on the connections, mainly the welding activity. Also, on achieving a streamlined process by which the parts of the structure can be fabricated and assembled ensuring the adequate fitting of the structure in view of the tight tolerances required for automated welding, the 3D mating of circular tubes and the compensation for distortions. The aim of the project is to improve the design, manufacture, inspection and installation of 3D steel structures through improving the business process, automation of fabrication and the integration of all the stages in this process.