Fraunhofer-Institut für Produktionsanlagen und Konstruktionstechnik IPK

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  • Publication
    Condition monitoring concept for industrial Robots
    ( 2020)
    Uhlmann, Eckart
    ;
    Polte, Julian
    ;
    Geisert, Claudio
    Industrial robots are used in production technology for a wide variety of tasks. The most frequently used type worldwide is the so-called vertical articulated arm robot, often designed with 5 or 6 axes. Due to their relative movement, the axes are tribological systems, they are subject to wear and tear and must be maintained regularly. An important aspect of maintenance is the inspection, which aims to assess the current state of wear and tear. This paper presents a concept for condition monitoring by means of self-tests for industrial robots. The basis is formed by MEMS-based vibration sensors, which are mounted on the axis joints. The vibration signals acquired during the self-test are analyzed in an Edge Gateway and the condition is classified using methods from the field of machine learning. The result of the classification and the features used for it are then sent to a cloud platform where they can be further analyzed. With this approach, service calls can be planned in advance and unplanned downtimes avoided. The article concludes with a critical discussion of the advantages and disadvantages of the presented concept and gives an outlook on still open research questions.
  • Publication
  • Publication
    Improving maintenance services for machine tools by integrating specific software functions
    ( 2013)
    Uhlmann, Eckart
    ;
    Otto, Franz
    ;
    Geisert, Claudio
    Information and communication technology (ICT) reveals high potential to make maintenance, repair, and overhaul (MRO) services more efficient. This paper presents a concept for an ICT system that will support field service technicians as well as administrational staff. The system will provide software functions for service preparation and to guide service technicians through process operations, providing machine documentation, machine and service history, and data from the machine control. A multi-agent based communication concept will enable interaction between administrational staff, service technician, and machine tool by data exchange, generation of situational instructions, and automated documentation of service activities.
  • Publication
    Lifecycle-monitoring. Integration in Service-Prozesse und Produktdatenmanagement
    ( 2012)
    Uhlmann, Eckart
    ;
    Geisert, Claudio
    ;
    Hohwieler, Eckhard
    Der vorliegende Beitrag beschreibt zunächst, aus welchen Gründen ein Lifecycle-Monitoring notwendig ist. Er zeigt auf, welche prinzipiellen Daten im Rahmen eines Lifecycle-Monitoring benötigt werden, wie sie erfasst, archiviert und sinnvoll verknüpft werden können. Die Notwendigkeit der informationstechnischen Verknüpfung der in einer heterogenen Systemlandschaft vorliegenden Informationen wird abschließend an einem kurzen Praxisbeispiel erläutert.