Programmable Focusing Optics Unit Designed for Scanner Welding

Trumpf’s PFO 3D programmable focusing optics unit is designed for scanner welding, cutting and drilling. The maximum work area of the laser measures 20.8" × 30.7" in elliptical form, with a Z stroke ranging to ±18.7". The maximum laser power is 8 kW. To minimize repositioning time and maximize performance in larger applications, a robot-mounted PFO can be controlled to process “on the fly” through real-time synchronization of the scanner axes and robot axes.

The electronics system is designed to ensure accuracy at the workpiece. With the CalibrationLine function, for example, the exact position of the focal point and the power of the laser beam can be determined. The Mirror Stabilization Program corrects mirror positions measured in offset and gain, independent of temperature and humidity. The addition of the “wobble” feature improves material processing capabilities in bridging gaps, battery welding and creating a repeating pattern for larger contact area with a small focus spot. These changes are said to significantly improve repeatability and enable precise processing results in applications with extremely defined requirements.