Robot welding

Today, there are more and more three-dimensional welding applications. Typical of many is the welding of roofs in the automobile sector. Here, the focusing unit of the laser is mounted on a 6-axis buckling arm robot, which executes the movements in space. Most frequently used are Nd:YAG lasers, which allow flexible application of the laser light through optical fibers. But CO₂ lasers combined with flexible mirror movement (Flexarm®) can also be used.

This is how bodies are created in car construction that are significantly stiffer in case of a crash, for example, and thus provide greater safety for passengers. Furthermore, laser welding always requires access from one side only, so new designs are now possible that could not nave been implemented by means of traditional resistance spot welding.