Autoadaptive Minimization of Transfer System Oscillations

authored by: Stefan Fries, Quoc Thang Nguyen, Levent Altan, Dietmar Friesen, Richard Krimm, Bernd-Arno Behrens
Abstract: Complex sheet metal parts are produced in sequential forming operations on transfer presses. To minimize downtimes, transfer systems transport the workpieces between the forming stages automatically in the auxiliary process times. In order to achieve a high productivity, forming machines are operated with high stroke rates. As a result auxiliary process times are reduced, so that transfer systems have to be moved with high speed [1].
The de- or acceleration of the transfer system induces mechanical oscillations of the transfer bars, which can lead to a limited workpiece positioning accuracy and thus limiting the production speed [2]. Based on this problem the authors of this publication present a new approach for stabilizing the transportation process by reducing oscillations in transfer systems, thus increasing the productivity of transfer presses. After an overview of the state of the art regarding transfer presses, the methodology for minimizing oscillations and a detailed multi-body simulation model of the transfer system are described. In addition, simulation results are presented and an outlook on forthcoming work is given.
Organisation(s): Institute of Metal Forming and Metal Forming Machines
Type: Contribution to book/anthology
Pages: 121-139
Publication date: 24.11.2019
Publication status: Published
Peer reviewed: Yes
Electronic version(s): https://doi.org/10.1007/978-3-662-60417-5_12 (Access: Closed)
: Details in the research portal "Research@Leibniz University"

BibTeX

@inbook{4d58fa13c81e42f4b5750fd1b1cc1d11,
title = "Autoadaptive Minimization of Transfer System Oscillations",
abstract = "Complex sheet metal parts are produced in sequential forming operations on transfer presses. To minimize downtimes, transfer systems transport the workpieces between the forming stages automatically in the auxiliary process times. In order to achieve a high productivity, forming machines are operated with high stroke rates. As a result auxiliary process times are reduced, so that transfer systems have to be moved with high speed [1].The de- or acceleration of the transfer system induces mechanical oscillations of the transfer bars, which can lead to a limited workpiece positioning accuracy and thus limiting the production speed [2]. Based on this problem the authors of this publication present a new approach for stabilizing the transportation process by reducing oscillations in transfer systems, thus increasing the productivity of transfer presses. After an overview of the state of the art regarding transfer presses, the methodology for minimizing oscillations and a detailed multi-body simulation model of the transfer system are described. In addition, simulation results are presented and an outlook on forthcoming work is given.",
keywords = "Transfer System Oscillations, Minimization of Oscillations, Forming machines",
author = "Stefan Fries and Nguyen, {Quoc Thang} and Levent Altan and Dietmar Friesen and Richard Krimm and Bernd-Arno Behrens",
note = "{\textcopyright} 2019 Springer-Verlag GmbH Germany, part of Springer Nature",
year = "2019",
month = nov,
day = "24",
doi = "10.1007/978-3-662-60417-5_12",
language = "English",
isbn = "978-3-662-60416-8",
pages = "121--139",
editor = "Jens-Peter Wulfsberg and Wolfgang Hintze and Bern-Arno Behrens",
booktitle = "Production at the leading edge of technology",
publisher = "Springer Vieweg",
address = "Germany",
}