Computer Numerical Controlled Grinding and Physical Vapor Deposition for Fused Deposition Modelled Workpieces

The use of additive manufacturing (AM) enables companies to directly produce complex end-use parts. Fused deposition modelling (FDM) is an AM technology based on an extrusion process of fabricating parts. This layer-by-layer method results in a poor surface finish, and as a result, manual finishing...

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Bibliographic Details
Published in:Advances in materials science and engineering 2018-01, Vol.2018 (2018), p.1-7
Main Authors: Galantucci, Luigi Maria, Pei, Eujin, Percoco, Gianluca, Lavecchia, Fulvio
Format: Article
Language:English
Subjects:
Additive manufacturing
CAD
Coating effects
Computer aided design
Extrusion
Finishing
Fused deposition modeling
Grinding
Mathematical models
Methods
Numerical controls
Physical vapor deposition
Rapid prototyping
Researchers
Surface finish
Surface finishing
Thin films
Workpieces
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Summary:The use of additive manufacturing (AM) enables companies to directly produce complex end-use parts. Fused deposition modelling (FDM) is an AM technology based on an extrusion process of fabricating parts. This layer-by-layer method results in a poor surface finish, and as a result, manual finishing is often required, which consequentially reduces the definition of the geometrical features. This research proposes a novel way of achieving high surface finishing by using additive and finishing processes, followed by a physical vapor deposition (PVD) coating. Two test pieces were produced, the first one was subjected to computer numerical controlled (CNC) mechanical grinding with appropriate grades of grindstones; the second one was subjected to microsandblasting to remove excess material and the stair-stepping effect. Both test pieces were then subjected to a PVD coating process to provide a metal thin film. To benchmark the test pieces, the authors used a coordinate measure machine for dimensions and a roughness meter to verify the effectiveness of this postprocessing approach.
ISSN:1687-8434
1687-8442
DOI:10.1155/2018/9037490