Control of geometry deviation by stiffness variation in polymer deep drawing tools
Research output: Contributions to collected editions/works › Article in conference proceedings › Research › peer-review
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New Developments in Sheet Metal Forming Technology. ed. / Mathias Liewald. MAT-INFO Werkstoff-Informationsgesellschaft mbH, 2014. p. 291-298.
Research output: Contributions to collected editions/works › Article in conference proceedings › Research › peer-review
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TY - CHAP
T1 - Control of geometry deviation by stiffness variation in polymer deep drawing tools
AU - Mennecart, Thomas
AU - Güner, Alper
AU - Ben Khalifa, Noomane
AU - Tekkaya, A. Erman
PY - 2014
Y1 - 2014
N2 - Due to the fact that the automotive industry is increasing the amount of vaiants of cars, the produced parts become more and more less. As a result, the same types of produced parts decrease and therefore the use of tools with a lifetime of nearly 10,000 parts gets a higher attractiveness. For forming operations with a low production volume or even for the design or try out process, deep drawing tools made out of polymers can be used. To enhance the wear behaviour of the tools, it is possible to protect the polymer by a hard metal coating. One of the main advantages of the polymer material in such a tool is the possibility to change or influence the stiffness. By varying the stiffness, the material flow can be controlled. This is useful to influence the geometry deviation and the springback behaviour of deep drawn parts. The use of an elastic tool leads to a broad process wmdow for the forming operation. In the presented research results the possibility of the influence of stuffiness variation in polymer tool is investigated for two forming processes of DP 600 high strength steel. A comparison of the forming behaviour with polymer die and steel die is operated in these investigations. In the polymer die, the stiflhess could be varied by the use of metallic springs and electrical linear actuators. Thereby the stiffness was controlled temporally and locally. The observed results show, that with the use of such functional elements the springback and the geometry deviation could be reduced successfully.
AB - Due to the fact that the automotive industry is increasing the amount of vaiants of cars, the produced parts become more and more less. As a result, the same types of produced parts decrease and therefore the use of tools with a lifetime of nearly 10,000 parts gets a higher attractiveness. For forming operations with a low production volume or even for the design or try out process, deep drawing tools made out of polymers can be used. To enhance the wear behaviour of the tools, it is possible to protect the polymer by a hard metal coating. One of the main advantages of the polymer material in such a tool is the possibility to change or influence the stiffness. By varying the stiffness, the material flow can be controlled. This is useful to influence the geometry deviation and the springback behaviour of deep drawn parts. The use of an elastic tool leads to a broad process wmdow for the forming operation. In the presented research results the possibility of the influence of stuffiness variation in polymer tool is investigated for two forming processes of DP 600 high strength steel. A comparison of the forming behaviour with polymer die and steel die is operated in these investigations. In the polymer die, the stiflhess could be varied by the use of metallic springs and electrical linear actuators. Thereby the stiffness was controlled temporally and locally. The observed results show, that with the use of such functional elements the springback and the geometry deviation could be reduced successfully.
KW - Engineering
KW - Kunstoff
KW - Werkzeugwerkstoff
KW - Polymer
KW - Rückfederung
KW - Hartmetall
KW - Werkzeugstahl
KW - hochfester Stahl
KW - Prototypentwicklung
KW - Steifigkeit
KW - Umformen
KW - Lebensdauer
KW - Automobilindustrie
KW - Verschleißschutzschicht
KW - Linearaktuator
KW - Ziehteil
KW - Funktionsglied
KW - Matrizenwerkstoff
KW - Umformverhalten
KW - Steifigkeitsanpassung
KW - Tiefziehwerkzeug
KW - Funktionselement
KW - stiffness variation
KW - steel die
UR - http://d-nb.info/1072654962/04
M3 - Article in conference proceedings
SN - 978-3-88355-400-6
SP - 291
EP - 298
BT - New Developments in Sheet Metal Forming Technology
A2 - Liewald, Mathias
PB - MAT-INFO Werkstoff-Informationsgesellschaft mbH
T2 - International Conference on "New Developments in Sheet Metal Forming"
Y2 - 13 May 2014 through 14 May 2014
ER -