Research on 3D Printing Accuracy of Continuous Fiber Reinforced PEEK Composite

doi:10.3901/JME.2025.11.361

Abstract

Abstract: The printing accuracy of continuous fiber composite directly affects the external dimensions and assembly accuracy of components. This study focuses on the package structure and honeycomb filling structure of conformal phased array antenna, and conducts a study on the printing accuracy of continuous fiber reinforced composite. Firstly, a force model of continuous fiber filament during the printing process is established, and the force situation of the filament during the printing process is analyzed. Combined with the force situation, the accuracy loss mechanism of arc, straight line, and right-angle features during the printing process is studied. Subsequently, the influence of process parameters on the printing accuracy of arc and right-angle features is studied, and finally, the typical package structure and honeycomb filling structure are printed successfully. The research results indicate that printing accuracy is mainly controlled by the friction force and adhesive force on the filament. When the friction force is greater than the adhesive force, it is easy for the filament to slip or detach. The minimum printing radius of an arc is influenced by both printing speed and layer thickness. The parameter combination with a layer thickness of 0.3 mm has a higher ability to form large curvature arcs. The length loss and area loss of printed right-angle are influenced by both printing speed and layer thickness, and they both increase with the increase of printing speed and layer thickness. The parameter combination with a layer thickness of 0.3 mm has a high ability to stabilize printing accuracy.

Key words: continuous fiber, PEEK, composite, 3D printing, accuracy

CLC Number:

TD406

LIU Xiaojun, SHAN Zhongde, LIU Jianhua, LI Zhikun, JIANG Xibin, LI Hao. Research on 3D Printing Accuracy of Continuous Fiber Reinforced PEEK Composite[J]. Journal of Mechanical Engineering, 2025, 61(11): 361-375.

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