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<p>This paper presents a towards support-free design method for surface&#xa0;prototype manufacturing based on fused filament fabrication (FFF) via dexterous multi-axis linkage (DML)&#xa0;printing. The fused filament fabrication equipment, including the delta print mechanism and DML printing platform namely universal-prismatic-spherical + spherical (UPS + S) parallel robot with 3 DOFs (degrees of freedom) in orthogonal printing coordinate system (PCS), is schematically designed. On the strength of UPS + S, the build orientation for support-free AM is determined by stratified equilibrium reinforcement design&#xa0;(ERD)&#xa0;and&#xa0;dynamic&#xa0;joint clearance, so as to reckon the kinematics of parallel robot. Afterwards, the reversed delta parameters are picked from feasible control combinations on the basis of roboticized&#xa0;parameters. Take 3D heart&#xa0;prototype&#xa0;which is&#xa0;a&#xa0;complex curved surface component for instance, the physical experiment is implemented by multi-axis printing&#xa0;using&#xa0;the FFF equipment, where the surface topography of physically fabricated complex curved surface component can be observed with smooth texture. The proposed DML platform may be of great significance to realize high efficiency and high-precision FFF via automatic intelligent robotics.</p>

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Towards support-free design for prototype manufacturing based on fused filament fabrication via dexterous multi-axis linkage

  • 期刊论文

  • 发表日期：

    2025年6月19日

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  • Mingyu Gao,
  • Jinghua Xu,
  • Shuyou Zhang,
  • Jianrong Tan

摘要

This paper presents a towards support-free design method for surface prototype manufacturing based on fused filament fabrication (FFF) via dexterous multi-axis linkage (DML) printing. The fused filament fabrication equipment, including the delta print mechanism and DML printing platform namely universal-prismatic-spherical + spherical (UPS + S) parallel robot with 3 DOFs (degrees of freedom) in orthogonal printing coordinate system (PCS), is schematically designed. On the strength of UPS + S, the build orientation for support-free AM is determined by stratified equilibrium reinforcement design (ERD) and dynamic joint clearance, so as to reckon the kinematics of parallel robot. Afterwards, the reversed delta parameters are picked from feasible control combinations on the basis of roboticized parameters. Take 3D heart prototype which is a complex curved surface component for instance, the physical experiment is implemented by multi-axis printing using the FFF equipment, where the surface topography of physically fabricated complex curved surface component can be observed with smooth texture. The proposed DML platform may be of great significance to realize high efficiency and high-precision FFF via automatic intelligent robotics.