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<p>Fused deposition modeling, a conventional 3D printing technology, uses a three-degree-of-freedom motion mechanism to achieve layer-by-layer printing. However, when facing overhanging structures, this technology requires support addition or other methods, leading to material waste and laborious postprocessing. This study proposes a model decomposition algorithm based on a five-axis 3D printer. The algorithm combines a presegmentation module for rapid initial partitioning with a planar search technique to iteratively segment components that violate self-supporting criteria and utilizes the printer’s flexible multidirectional movement to transform the spatial position and orientation of the parts on the workbench. The decomposed result can meet unsupported conditions, eliminating the need for complex support structures while achieving geometric accuracy for benchmark overhang models.</p>

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Model decomposition algorithm for five-axis 3D printing to achieve support-free fabrication

  • 期刊论文

  • 发表日期：

    2025年11月8日

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  • Xiaodong Ren,
  • Xiangzhe Yang,
  • Zhe He,
  • Chenyang Wang

摘要

Fused deposition modeling, a conventional 3D printing technology, uses a three-degree-of-freedom motion mechanism to achieve layer-by-layer printing. However, when facing overhanging structures, this technology requires support addition or other methods, leading to material waste and laborious postprocessing. This study proposes a model decomposition algorithm based on a five-axis 3D printer. The algorithm combines a presegmentation module for rapid initial partitioning with a planar search technique to iteratively segment components that violate self-supporting criteria and utilizes the printer’s flexible multidirectional movement to transform the spatial position and orientation of the parts on the workbench. The decomposed result can meet unsupported conditions, eliminating the need for complex support structures while achieving geometric accuracy for benchmark overhang models.