Issue |
MATEC Web Conf.
Volume 401, 2024
21st International Conference on Manufacturing Research (ICMR2024)
|
|
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Article Number | 02002 | |
Number of page(s) | 6 | |
Section | Additive Manufacturing | |
DOI | https://doi.org/10.1051/matecconf/202440102002 | |
Published online | 27 August 2024 |
Hybrid manufacturing of collector coins with free-moving features
1 IDMEC, Instituto Superior Técnico, Universidade de Lisboa, Portugal
2 CIMOSM, Instituto Superior de Engenharia de Lisboa, Instituto Politécnico de Lisboa, Portugal
* Corresponding author: joao.pragana@tecnico.ulisboa.pot
This paper presents a feasibility study on the use of hybrid manufacturing to fabricate collector coins with free-moving features. The approach begins with the fabrication of the different coin elements through blanking and additive manufacturing and ends with minting to connect these elements and impart lettering and reliefs on both coin surfaces. Two different concepts are introduced and analyzed based on the geometric and operative parameters of coin minting. Experiments and finite element computer simulations allow establishing the applicability window of the proposed coin concepts. These results, combined with those obtained from destructive tests, are then used to optimize the operative parameters concerning the final geometry and structural integrity of the coins. The feasibility of the new hybrid manufacturing approach is demonstrated through the fabrication of prototype coins with free-moving features.
© The Authors, published by EDP Sciences, 2024
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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