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In this present research, we propose a kinematic modeling approach to evaluate the impact of joint clearances on the positioning accuracy of print heads in an Ultimaker-style FDM 3D printer. A geometric artifact was created using CAD software, fabricated via 3D printing, and subsequently analyzed with a Coordinate Measuring Machine (CMM) to evaluate the positional deviations between the printed part and its original CAD design. The experiments revealed that radial clearance in cylindrical joints leads to significant errors. The findings indicate that the clearances in mechanical joints can considerably affect the volumetric accuracy of 3D-printed parts.

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Kinematic Modeling and Analysis of Positioning Errors of the Print Head in FDM 3D Printers

  • 会议论文

  • 发表日期：

    2025年

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  • Youssef Chouaibi,
  • Faouzi Slimani,
  • Elouni Chebbi,
  • Zouhaier Affi,
  • Lotfi Romdhane

摘要

In this present research, we propose a kinematic modeling approach to evaluate the impact of joint clearances on the positioning accuracy of print heads in an Ultimaker-style FDM 3D printer. A geometric artifact was created using CAD software, fabricated via 3D printing, and subsequently analyzed with a Coordinate Measuring Machine (CMM) to evaluate the positional deviations between the printed part and its original CAD design. The experiments revealed that radial clearance in cylindrical joints leads to significant errors. The findings indicate that the clearances in mechanical joints can considerably affect the volumetric accuracy of 3D-printed parts.