The filler wire required for the seam during joining also serves as a mechanical sensor. The filler wire is continuously pressed into the joint by the swivel axis and melted in the laser focal point; it positions and guides the processing head precisely over the seam.
Two synchronized scanner axes are integrated into the ALO4-O for a defined 2D laser beam oscillation with up to 1000 kHz. Beam oscillation is a repeated, high-frequency movement of the laser beam. Deflection shapes, amplitudes and frequencies are freely programmable for each scanner axis.