M.Sc.

Hüsing, Florian

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  • Publication
    Design of freeform optic module creating a ring-shaped laser beam profile for localized heating of sheet metals
    ( 2023-09-28)
    Chen, Teng
    ;
    Schmid, Tobias
    ;
    Hüsing, Florian
    ;
    Janssen, Henning
    ;
    Brecher, Christian
    Laser-based preheating is an energy-efficient method to locally enhance the formability of a metal sheet. A ring-shaped beam can be used for preheating in the flange forming process. According to the tailored heat principle, only the area to be formed is heated. In this paper, a method is presented to design modules with reflective freeform optics (FFO) that converts a collimated Super-Gaussian beam into a ring-shaped beam at a working distance of e.g. 170 mm and deflects the laser beam by 90° simultaneously. The FFO design is based on a 2D geometric model of the optical system and is iteratively optimized according to the process requirements. The FFO was manufactured by fast tool diamond turning and placed into an integration model within a progressive die tool. The design was verified by beam profile measurement as well as by analyzing the formed part quality.
  • Publication
    System development for active deviation compensation in laser-based wire micro deposition using image recognition
    ( 2023-09-13)
    Schmid, Tobias
    ;
    Spahn, Adrian
    ;
    Hüsing, Florian
    ;
    Janssen, Henning
    ;
    Brecher, Christian
    Gold plating is used to protect electrical components from corrosion and enhance functionality. A sustainable alternative is localized laser-based wire deposition: Using a laser scanning system, micro gold wires are welded into gold spots locally on the component surface. However, process and system tolerances lead to deviations between the target and actual weld positions. This paper presents a system for active deviation compensation using an on-axis camera and image recognition algorithms. Different adaptive thresholding methods and image processing algorithms are used to determine the welding target position on the part. The actual welding point of the wire on the component is calculated and transferred to the scanner as the new welding position. An approach for designing such a system for active deviation compensation and the possibility of higher-level communication with industrial controls is presented.
  • Publication
    Optimierte Prozesse mithilfe lokaler Erwärmung und KI
    ( 2022)
    Janssen, Henning
    ;
    Schmidt, Florian
    ;
    Schmid, Tobias
    Konventionelle Verfahren zur Blechbearbeitung wie das Scherschneiden oder Umformen stoßen bei Hochleistungswerkstoffen häufig an ihre Grenzen. So sind einwandfreie Schneid- und Umformergebnisse bei hochfesten Blechen aus Stahl, Aluminium oder Titan in Transfer- und Folgeverbundwerkzeugen nur schwer zu erreichen. Optimierte Blechbearbeitungsprozesse mit thermischer Unterstützung sowie (Mensch-zentrierten) KI-Applikationen sind eine Möglichkeit, um den steigenden Qualitätsanforderungen gerecht zu werden.