A Comparison of Pin Actuation Schemes for Large-Scale Discrete Dies |
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| Institution: | 1. Dept. of Mechanical Engineering, Aeronautical Engineering, and Mechanics, Rensselaer Polytechnic Institute, Troy, New York, USA;2. Technology Development, Northrop Grumman Corp., Bethpage, New York, USA;1. Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil;2. Universidade Estadual do Rio de Janeiro, Rio de Janeiro, Brazil;3. Comissão Nacional de Energia Nuclear, Rio de Janeiro, Brazil;4. Centro Universitário Estadual da Zona Oeste, Rio de Janeiro, Brazil;1. Georessources (UMR 7359), Université de Lorraine-ENSG, TSA 70605, 54518 Vandoeuvre-lés-Nancy Cedex, France;2. Project ALICE, INRIA Nancy Grand Est, 615 rue du jardin botanique, 54600 Villers-lés-Nancy, France;1. Dipartimento di Ingegneria Chimica, dei Materiali e della Produzione Industriale, Università degli Studi di Napoli Federico II, Piazzale Tecchio 80, 80125 Napoli, Italy;2. NEAPoLIS, Numerical and Experimental Advanced Program on Liquids and Interface Systems, Joint Research Center CNR - Università degli Studi di Napoli Federico II, Piazzale Tecchio 80, 80125 Napoli, Italy;3. CNR-ISASI, Institute of Applied Sciences and Intelligent Systems E. Caianiello, Via Campi Flegrei 34, 80078 Pozzuoli, Napoli, Italy;1. Key Laboratory of E&M (Zhejiang University of Technology), Ministry of Education & Zhejiang Province, Hangzhou, 310014, PR China;2. School of Civil Engineering, The University of Queensland, St Lucia, QLD, 4072, Australia |
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| Abstract: | Reconfigurable discrete die tooling is attractive for reducing the lead time, initial costs, and recurring costs associated with stretch forming of sheet metal parts such as aircraft body panels and wing skins as well as automotive and marine components. Current tooling for the stretch forming process requires substantial lead time for fabrication and is inflexible and expensive. To develop discrete die tooling for stretch forming, three different discrete die designs have been proposed, and small-scale prototypes of each have been built. In this paper, the three designs are compared to each other in terms of performance criteria, including pin positioning accuracy and repeatability, setting speed, suitability for a production environment, fabrication costs, manufacturability and maintainability, and maximum forming load capacity. The advantages and disadvantages of each design are also discussed. |
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