Precise positioning of the processing laser creates the prerequisite for optimum welding results. At the same time, the use of remote processes and welding-on-the-fly in industrial series production makes a decisive contribution to avoiding unproductive repositioning phases.

Lessmüller Lasertechnik offers you various seam tracking systems that can be used in combination with laser welding seam tracking optics from a wide range of manufacturers and ensure high-quality seams in efficient production. These automated and highly dynamic systems determine and control the optimal welding position while compensating for component tolerances or changes in the welding plane:

• The OCT (Optical Coherence Tomography) system provides highly accurate, non-contact surface measurement of all common joining points as well as dynamic position correction of the processing laser beam during the welding process in real time. Hairpins can also be precisely measured with this system in terms of geometry and their position relative to each other in order to achieve the optimum welding position. In principle, OCT is compatible with all common welding optics.

• The LSO system (Lens Shifting Optics) is an in-house processing optics for joints with small deviations of up to 2.5 mm. LSO closes the gap between fixed optics and process optics with scanner technology. Here, LSO and OCT form an ideal system unit that guarantees highly dynamic correction of the welding position and the focal position during the welding process and reliably ensures an optimum welding result. For the user and integrator, this unit presents itself as a black box that is easy to integrate.

• The WELDEYE system with camera and extraneous light based seam tracking and real-time process visualization is used hundreds of times in welding and brazing with filler wire and has proven itself for over 10 years.

All measurement and evaluation data of these systems can be stored in each case and thus enable complete traceability.

At home in many industries