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    Datengestützte Umformtechnik: Künstliche Intelligenz zwischen Prozesswissen, Regelung und Produktionsrealität
    (2026)
    Engel, Bernd
    ;
    Spörer, Thomas
    ;
    Böhm, Viktor 
    ;
    Tschannerl, Jeremias 
    ;
    Volk, Wolfram
    With the 7th Biegeforum, the Chair of Forming Technology at the University of Siegen once again offers researchers the opportunity to present their topics and findings to a specialist audience from industry and academia. This conference volume brings together current research findings and innovative developments in forming technology, highlighting the broad scope of the research field. The Biegeforum thus underscores its role as a key platform for exchange between research and industry — a role it has fulfilled since its first edition in 2011.
    Source Type:Conference Proceedings
    DOI:10.25819/ubsi/10982
    Series:Forschungsberichte des Lehrstuhls für Umformtechnik
      1  30
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    PublicationAccess status: Open Access ,
    Enabling scalable and flexible production through digital twin-based robot–machine commissioning
    (2026)
    Tuli, Tadele Belay
    ;
    Schiller, Michael
    ;
    Engel, Bernd
    ;
    Manns, Martin
    This paper presents a conceptual method for a digital twin–based framework for scalable, flexible robot–machine commissioning in batch production processes. Following the concept of virtual commissioning as defined in VDI 4499, this method proposes a robot-first, event-driven interaction paradigm in which a mobile manipulator initiates transportation, handling, and manipulation tasks while production machines remain in a ready state and respond to the robot's actions. The approach is validated through a proof-of-principle demonstration using a nine-degree-of-freedom mobile manipulator (SkaBot9) with an integrated shelf. The complete process logic and communication architecture are simulated and transferred to the physical system without structural changes. The results demonstrate that the proposed method supports early validation of robot–machine interaction and a potential for commissioning with flexible, mobile robot–based production systems.
    Source Type:InProceedings
    DOI:10.25819/ubsi/11008
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    Transformation in der Biegetechnik
    (2023)
    Engel, Bernd
    ;
    Geueke, Michael 
    ;
    Nebeling, Daniel
    ;
    Gösling, Marco
    ;
    Fruhstorfer, Stephanie 
    Mit dem 6. Biegeforum hat der Lehrstuhl für Umformtechnik an der Universität Siegen ein neues Format geschaffen, in dem neben der Industrie nun auch den Forschenden ein eigener Schwerpunkt am Forum gegeben wird. Im vorliegenden Tagungsband sind Fachvorträge zum aktuellen Stand der Forschung sowie von Innovationen in der Umformtechnik zusammengefasst. Sie geben einen spannenden Einblick in hochaktuelle Forschungsergebnisse zum Biegen. Seit seiner erstmaligen Auflage im Jahr 2011 hat sich das Biegeforum zu dem etablierten Treffpunkt für Wissenschaft und Praxis entwickelt. Es findet fortan im zweijährigen Rhythmus statt.
    Source Type:Conference Proceedings
    DOI:10.25819/ubsi/10365
    Series:Forschungsberichte des Lehrstuhls für Umformtechnik
      696  317
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    PublicationAccess status: Open Access ,
    Verfahrensentwicklung 3D Schwenkbiegen
    (2023)
    Schiller, Michael
    ;
    Frohn-Sörensen, Peter
    ;
    Engel, Bernd
    Im Zuge der Individualisierung wird sich die Massenproduktion zu einer personalisierten Produktion verändern, mit zum Teil geringeren Losgrößen bei erheblicher Zunahme von Varianten. Daraus formulieren sich Forderungen nach Flexibilität in der Fertigungstechnik. Das Schwenkbiegen eignet sich als flexibles und werkzeugarmes Verfahren zur Herstellung variabler Querschnittsgeometrien. Die für das 3D Schwenkbiegen entwickelte Fertigungstechnik erweitert die Anwendungsmöglichkeiten des Basisverfahrens erheblich, indem sie die Herstellung nichtlinearer, dreidimensionaler Biegekanten zur Herstellung querschnittsvariabler und belastungsangepasster Bauteile ermöglicht. Derartige Bauteile finden sich häufig in Entwicklungen für Karosserie- und Strukturbauteile, z. B. in der Automobil- und Luftfahrtindustrie. Das Verfahren ist skalierbar und damit auf die Verarbeitung variabler Werkstückgeometrien, Werkstoffe und Rückfederungsverhalten einstellbar. Im vorliegenden Paper wird ein Verfahrensüberblick gegeben und das Arbeitsdiagramm der Fertigungstechnik 3D Schwenkbiegen vorgestellt, welches zur Bewertung und Auslegung künftiger Geometrien herangezogen werden kann.
    Source Type:InProceedings
    DOI:10.25819/ubsi/10399
      324  297
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    PublicationAccess status: Open Access ,
    Verfahrensentwicklung 3D-Schwenkbiegen
    (2025)
    Schiller, Michael
    With increasing individualization, mass production is evolving towards personalized manufacturing, which is characterized by smaller batch sizes and a greater variety of variants. This increases the need for flexible manufacturing technologies. 3D-swivel-bending is an innovative approach to the low-tool production of complex profile components, particularly due to its ability to realize non-linear and three-dimensional bending edges and free-form surfaces. The development of this process aims to create more efficient and flexible methods for the manufacturing of components with variable cross-sections and load-adapted components. An important aspect is the extension of the swivel-bending principle by additional degrees of freedom to enable the shaping of non-linear bending edges and free-form surfaces. The process is based on a modified process instruction in which the axis of rotation of the bending tool is shifted relative to the bending edge, and adapted tool geometries are developed. The forming mechanisms and effects of 3D-swivel-bending are analyzed in a process design in order to describe the properties of the manufactured parts and the process limits analytically. Various methods for characterizing the mechanical behavior are presented in the process modelling to derive a process window for 3D-swivel-bending. This enables precise characterization of the forming mechanisms. The process window shows the working field of 3D-swivel-bending and can be used to evaluate and design future geometries. A validation of the developed methods evaluates the applicability of 3D-swivel-bending in industrial contexts and demonstrates technological and economic advantages. It shows that 3D-swivel-bending is particularly suitable for small and medium batch sizes in the automotive and aerospace industries, as well as in the construction sector. The process extension focusses on improvements in flexibility and applicability. Hybrid bending kinematics and new technologies for tool production and bending sequence planning are being developed. In addition, a process generator for digital planning and optimization of the production process is introduced. Thanks to its flexibility and efficiency, 3D-swivel-bending offers an innovative solution for complex components. It is particularly suitable for small batch sizes in industrial sectors and combines technological and economic advantages.
    Source Type:Doctoral Thesis
    DOI:10.25819/ubsi/10800
    Series:Forschungsberichte des Lehrstuhls für Umformtechnik
    Volume number:18
      36  75