Trumpf Laser Welding Technology Provides Tighter Tolerances

Trumpf Inc. Brightline Scan technology for its Trulaser Weld 5000 laser welding machine enables operators to guide the laser beam using the laser scanner. The combination of a robot and scanner makes it possible to supplement the forward motion of the robot with a further, freely programmable movement of the laser in any desired direction. This oscillating motion is facilitated through specialized, lightweight mirrors. By enabling scan frequencies in the kHz range, this technique increases the thickness of sheets that can be processed in heat conduction welding from 0.12-0.24".

The technology enables the operator to tailor the parts’ bonding surfaces — which are melted directly by the laser beam — to suit each application. This makes for a more reliable process and results in higher-quality parts. The fact that the beam can now also be guided using the scanner makes it easier to achieve tighter tolerances, the company says.

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The task of guiding the laser beam via the laser scanner in Brightline Scan is performed by the freely programmable PFO 20 focusing optics, which are integrated into the robot’s welding optics. Guiding the beam using a combination of the robot and scanner provides a significant improvement to the robustness and flexibility of the laser welding process.

Trumpf provides companies with TechSets, which contain all the parameters needed for common applications. Fabricators can also use Brightline Scan in the welding cell’s Trutops Weld offline programming system. This allows the operator to program the machine while it is busy welding a different part. 

The technology provides a reliable solution for welding sheets up to 0.24" thick. The high precision and quality of the seams make it well suited for manufacturing furniture products and EV battery trays, as well as electrical cabinets.