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• W4312735514 abstract "We present a new algorithm for coordinating the motion of multiple extruders to increase throughput in fused filament fabrication (FFF)/fused deposition modeling (FDM) additive manufacturing. Platforms based on FFF are commonly available and advantageous to several industries, but are limited by slow fabrication time and could be could be significantly improved through efficient use of multiple extruders. We propose the coordinated toolpath planning problem for systems of extruders mounted as end-effectors on robot arms with the objective of maximizing utilization and avoiding collisions. Building on the idea of dependency graphs introduced in our earlier work, we develop a planning and control framework that precomputes a set of multi-layer toolpath segments from the input model and efficiently assigns them to individual extruders such that executed toolpaths are collision-free. Our method overcomes key limitations of existing methods, including utilization loss from workspace partitioning, precomputed toolpaths subject to collisions with the partially fabricated object, and wasted motion resulting from strict layer-by-layer fabrication. We report simulation results that show a major increase in utilization compared to single and multi-extruder methods, and favorable fabrication results using commodity hardware that demonstrate the feasibility of our method in practice." @default.
• W4312735514 created "2023-01-05" @default.
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• W4312735514 date "2022-10-23" @default.
• W4312735514 modified "2023-10-16" @default.
• W4312735514 title "Coordinated Toolpath Planning for Multi-Extruder Additive Manufacturing" @default.
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• W4312735514 doi "https://doi.org/10.1109/iros47612.2022.9981543" @default.
• W4312735514 hasPublicationYear "2022" @default.
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