Generation of continuous tool paths based on CAD models for Friction Stir Welding in 3D

Friction Stir Welding (FSW) in 3-dimensions, due to process constraints, requires an off-line programming approach. The creation of tool paths based on computer aided models for cutting, machining or traditional welding, exists in numerous of applications. But since FSW, until recently, have not been a 3-dimensional application, no proper solution for this process exists. In this paper we propose solutions on how to create FSW tool paths based on the geometric description of CAD models to auto create and export such to the executing control system. The emphasis is on extracting and evaluating the weldability of the defined segments in order to perform robust welding on complex weld seam geometries.