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An analysis of key process parameters for hybrid manufacturing by material extrusion and CNC machining

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Abstract

Hybrid Manufacturing combines the advantages of Additive Manufacturing (AM) and Subtractive Manufacturing on a single machine. Although previous research has provided a good background of the manufacturing parameters, the analysis is often carried out separately and there is a lack of combined knowledge. The purpose of this research is to examine the influence of the main manufacturing parameters involved in AM and subtractive processes using different variables. Particularly, the study is focused on the Material Extrusion process concerning the layer height, fill angle and fill density; as well as two factors related to machining, including stepover and pass direction. The parameters that were examined include the dimension, hardness, flatness, weight and roughness. A multifactorial Design of Experiments was proposed with a total of 64 samples. Next, a statistical analysis was carried out to assess the influence of the different groups on the response variables. Finally, a decision table presented and facilitated the selection of parameters depending on the desired objectives, leading to a framework that was applied to a case study for validation. This decision guide could enable designers and engineers to select the best strategy for a specific application, leading to a more efficient approach for manufacturing.

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Authors and Affiliations

  1. Departamento de Ingeniería Mecánica, Universidad de Las Palmas de Gran Canaria, Las Palmas de Gran Canaria, 35017, Spain

    Rubén Paz, Javier Santamarta, Mario D. Monzón & Joshua García

  2. Institute of Materials and Manufacturing, Brunel University London, Kingston Lane, Uxbridge, UB8 3PH, UK

    Eujin Pei

Authors
  1. Rubén Paz
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  2. Javier Santamarta
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  3. Mario D. Monzón
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  4. Joshua García
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  5. Eujin Pei
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Corresponding author

Correspondence to Mario D. Monzón.

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Paz, R., Santamarta, J., Monzón, M.D. et al. An analysis of key process parameters for hybrid manufacturing by material extrusion and CNC machining. Bio-des. Manuf. 1, 237–244 (2018). https://doi.org/10.1007/s42242-018-0023-0

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  • DOI: https://doi.org/10.1007/s42242-018-0023-0

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