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Deep Drawing with Local Hardening on Digital Multi-axis Servo Press

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Acta Metallurgica Sinica (English Letters) Aims and scope

Abstract

The paper discusses a new drawing technology, based on a synchronized movement of ram and cushion with multiple bending operations in alternating directions called “bi-directional deep drawing (BDD).” The goal is to avoid local thinning by strengthening the weak point using local hardening. BDD operations are realized before the conventional deep drawing process. This results in a local strain hardening at the weak point of the workpiece, which is usually located at the bottom punch radius. Two major aspects have to be given attention due to the high number of process parameters. On the one hand, for process design, it is helpful to have a tool by means of which it is possible to simultaneously create both the machine program for the servo press and the initial configuration for the process simulation. From the authors’ point of view, this complexity can only be represented by a numerical analysis method, on the other hand. Consequently, both aspects are given attention in this paper.

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Acknowledgments

The presented results of this paper are part of public research projects at Fraunhofer IWU, which is located in Chemnitz, Germany. The Projects 17058BR and 17488BR of the research association “Europäische Forschungsvereinigung für Blechverarbeitung e. V.” (EFB) were financed by the “Arbeitsgemeinschaft industrieller Forschungsvereinigungen—Otto von Guericke e. V.” (AiF) as part of the program to support “Industrial Community Research and Development” (IGF) with funds from the “Federal Ministry for Economic Affairs and Energy” (BMWi) following an order by the German Federal Parliament. The financial support and co-work are gratefully acknowledged by the authors.

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Authors and Affiliations

  1. Fraunhofer IWU, Nöthnitzer Str. 44, 01187, Dresden, Germany

    Sebastian Kriechenbauer, Reinhard Mauermann & Dirk Landgrebe

Authors
  1. Sebastian Kriechenbauer
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  2. Reinhard Mauermann
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  3. Dirk Landgrebe
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Correspondence to Sebastian Kriechenbauer.

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Kriechenbauer, S., Mauermann, R. & Landgrebe, D. Deep Drawing with Local Hardening on Digital Multi-axis Servo Press. Acta Metall. Sin. (Engl. Lett.) 28, 1490–1495 (2015). https://doi.org/10.1007/s40195-015-0348-z

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  • DOI: https://doi.org/10.1007/s40195-015-0348-z

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