Additive and subtractive hybrid manufacturing strategy integrating a NURBS-based workflow for precision components
Fused Filament Fabrication (FFF) is widely used in Additive Manufacturing (AM) due to its low cost and ability to produce complex thermoplastic parts. Advances in high-performance materials, such as carbon fibre-reinforced PEKK, along with improved printer resolution have expanded its suitability fo...
| Autores: | , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2026 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | RUIdeRA. Repositorio Institucional de la UCLM |
| OAI Identifier: | oai:ruidera.uclm.es:10578/48040 |
| Acceso en línea: | https://hdl.handle.net/10578/48040 |
| Access Level: | acceso abierto |
| Palabra clave: | Fused Filament Fabrication (FFF) Hybrid Manufacturing (ASHM) NURBS-based Modeling Geometric Precision |
| Sumario: | Fused Filament Fabrication (FFF) is widely used in Additive Manufacturing (AM) due to its low cost and ability to produce complex thermoplastic parts. Advances in high-performance materials, such as carbon fibre-reinforced PEKK, along with improved printer resolution have expanded its suitability for functional components. However, achieving high geometric precision remains challenging. Additive and Subtractive Hybrid Manufacturing (ASHM) offers a potential solution by combining 3D printing with subtractive post-processing, while a NURBS-based workflow can address geometric inaccuracies inherent to STL models. This study evaluates a NURBS-based Additive and Subtractive Hybrid Manufacturing (NURBS-ASHM) framework to fabricate cylindrical parts with high precision. Three methodologies were compared: conventional STL-based AM, precise AM using NURBS trajectories, and hybrid manufacturing integrating post-process milling. The results show that NURBS-based AM improves roundness and cylindricity by up to 49% and 43%, respectively, compared with STL-based printing, while ASHM further increases these gains to 73% and 78%. The proposed NURBS-ASHM framework is further extended to non-cylindrical geometries, particularly spherical surfaces, and to alternative machining processes such as turning, thereby confirming the applicability of the proposed framework to a wider range of operations and geometrical configurations. These findings demonstrate the effectiveness of integrating advanced modelling and hybrid processing as a general and transferable strategy for high-accuracy, cost-sensitive applications. |
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