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Curved Layer Fused Filament Fabrication Using Automated Toolpath Generation
Thomas Llewellyn-Jones1,2, Robert Allen2, Richard Trask2
1Advanced Composites Centre for Innovation and Science (ACCIS), Department of Aerospace Engineering, University of Bristol, Queens School, Bristol, United Kingdom.
3D Printing and Additive Manufacturing
|September 21, 2020
Summary
This study introduces an automated method for generating curved layer toolpaths in fused filament fabrication 3D printing. This technique enhances component aesthetics and structural integrity, resolving complex geometries and improving surface finish.
Area of Science:
- Additive Manufacturing
- Materials Science
- Computer-Aided Design
Background:
- Fused filament fabrication (FFF) traditionally uses planar layers, limiting component geometry and surface finish.
- Achieving complex curved surfaces in 3D printing often requires advanced techniques or post-processing.
- Optimizing toolpaths is crucial for improving both the visual appeal and mechanical properties of 3D printed parts.
Purpose of the Study:
- To demonstrate an automated method for generating curved layer toolpaths for FFF 3D printing.
- To evaluate the impact of curved layers on the aesthetic and structural properties of printed components.
- To showcase the algorithm's capability in handling complex geometries and hybrid printing approaches.
Main Methods:
- Development of a G-code generating algorithm for automated curved layer toolpath creation.
- Implementation of the algorithm in fused filament fabrication 3D printing.
- Case studies involving the printing of concave and convex structures.
- Creation of hybrid prints combining conventional and curved layers, including double skin sandwich structures.
Main Results:
- Successful generation of curved layer toolpaths for complex geometries.
- Demonstrated ability to resolve both concave and convex features with improved precision.
- Visual evidence of significantly enhanced surface finish on components printed with curved layers.
- Successful fabrication of hybrid structures integrating curved and planar layers.
Conclusions:
- Automated curved layer toolpath generation significantly improves the aesthetic and structural properties of FFF 3D printed components.
- The developed algorithm effectively handles complex geometries and enables novel hybrid printing strategies.
- Curved layer FFF offers a viable approach for producing higher-quality 3D printed parts with superior surface finish.
