B-axle turning/TRAORI turning is an advanced turning process in which simultaneous movement of linear and rotary axes enables dynamic orientation of the tool on the workpiece surface. With the aid of a transformation process, the programmed movement point is placed on the tool cutting edge located in the rotary axis, without this having to be taken into account when programming the individual axes. In addition to machining complex contours, the process also facilitates the programming of collision-free undercuts. In addition, tool life is significantly improved when this process is used, especially when machining materials that are particularly difficult to machine. Due to specific design adaptations of our machining centers, the dynamic synchronization of the rotary and linear axes has been optimized in such a way that no contour damage can occur on the workpiece.