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Efficient simulation and optimization for tandem press lines
University West, Department of Engineering Science, Division of Automation and Computer Engineering. (PTW)
2012 (English)Licentiate thesis, comprehensive summary (Other academic)
Place, publisher, year, edition, pages
Göteborg: Department of Signals and Systems, Chalmers University of Technology , 2012. , p. 56
Keywords [en]
Press Line Simulation, Simulation based optimization
Keywords [sv]
Reglerteknik, datorsimulering
National Category
Control Engineering
Research subject
ENGINEERING, Manufacturing and materials engineering
Identifiers
URN: urn:nbn:se:hv:diva-4953OAI: oai:DiVA.org:hv-4953DiVA, id: diva2:580828
Opponent
Supervisors
Available from: 2012-12-27 Created: 2012-12-27 Last updated: 2018-07-03Bibliographically approved
List of papers
1. A faster collision detection method applied on a sheet metal press line
Open this publication in new window or tab >>A faster collision detection method applied on a sheet metal press line
2011 (English)In: The 21st International Conference on Flexible Automation and Intelligent Manufacturing: Taiwan, 26-29 June 2011, 2011, p. 833-840Conference paper, Published paper (Refereed)
Abstract [en]

Geometrical collision detection is a time and resource consuming simulation task. In order to decrease time and resources, a general method has been developed. The method is useful in simulation cases where 3D CAD data is part of an iterative method, e.g. optimization. The method is based on a transformation of a general 3D problem to a 2D problem, eliminating the need of 3D CAD models. Press Line simulations during the last decade have been accepted as a quality improvement method. Today simulations of automated press lines are done for internal collision checks in dies and external collision checks against dies and material handling equipment. If these collisions are not detected in simulations, they result in delays, in introduction of a new product in the line, so called line tryout or later on when the line is ramped up to decided rate. The results of these collisions are used for pre-die design, design of grippers, maintenance and production planning. In this paper a new method, based on 2D simplifications, is developed and tested successfully in a virtual model of a press line at Volvo Car Manufacturing. Die Uppers 2 917 708 triangles and Die Lowers 602 686 triangles where reduced to 58 and 90 points. The result of the method shows substantial reduction of geometry data and a considerable improvement in collision detection evaluation time over general 3D algorithms in the tested case.

Keywords
collision detection, optimisation
National Category
Robotics
Research subject
ENGINEERING, Manufacturing and materials engineering
Identifiers
urn:nbn:se:hv:diva-3780 (URN)978-986-87291-0-0 (ISBN)
Conference
FAIM 2011
Note
Konferensen publicerad på USB-minneAvailable from: 2011-10-13 Created: 2011-10-13 Last updated: 2014-05-08Bibliographically approved
2. Efficient geometrical simulation and virtual commissioning performed in stamping
Open this publication in new window or tab >>Efficient geometrical simulation and virtual commissioning performed in stamping
2012 (English)In: Proceedings of 2012 IEEE 17th International Conference on Emerging Technologies & Factory Automation (ETFA 2012), Polen: IEEE, 2012, p. 1-8Conference paper, Published paper (Refereed)
Abstract [en]

In order to  perform efficient geometrical simulation and virtual commissioning in stamping, three fields are investigated namely: simulation building time, collision detection time and optimization time. Hence, reducing time is the main theme of this paper. To reduce simulation building time and optimization time, an efficient stamping simulation model is built and tested. Collision detection time is examined by a relative motion method based on 3D to 2D geometrical collision detection. The presented results mean that simulation and virtual commissioning can be performed at least ten times faster compared to standard approaches.

Place, publisher, year, edition, pages
Polen: IEEE, 2012
Keywords
Geometrical simulation, collision detection time, geometrical collision detection, geometrical simulation, optimization time, relative motion method, simulation building time, stamping simulation, virtual commissioning
National Category
Manufacturing, Surface and Joining Technology
Research subject
ENGINEERING, Mechatronics; Production Technology
Identifiers
urn:nbn:se:hv:diva-4951 (URN)10.1109/ETFA.2012.6489592 (DOI)9781467347372 (ISBN)978-1-4673-4736-5 (ISBN)978-1-4673-4735-8 (ISBN)
Conference
2012 IEEE 17th International Conference on Emerging Technologies & Factory Automation ETFA 2012
Available from: 2012-12-27 Created: 2012-12-27 Last updated: 2019-03-13Bibliographically approved
3. Toward efficient geometrical simulation and virtual commissioning in stamping
Open this publication in new window or tab >>Toward efficient geometrical simulation and virtual commissioning in stamping
2012 (English)In: p. 1-12Article in journal (Refereed) Submitted
Keywords
Simulation, Stamping
National Category
Materials Engineering
Research subject
ENGINEERING, Mechatronics
Identifiers
urn:nbn:se:hv:diva-4952 (URN)
Available from: 2012-12-27 Created: 2012-12-27 Last updated: 2019-04-16Bibliographically approved

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