连续纤维增强PEEK复合材料3D打印精度研究

doi:10.3901/JME.2025.11.361

机械工程学报 ›› 2025, Vol. 61 ›› Issue (11): 361-375.doi: 10.3901/JME.2025.11.361

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连续纤维增强PEEK复合材料3D打印精度研究

刘晓军^1,2, 单忠德³, 刘检华¹, 李志坤², 姜稀膑², 李昊²

1. 北京理工大学机械与车辆学院北京 100081;
2. 先进成形技术与装备全国重点实验室北京 100044;
3. 南京航空航天大学机电学院南京 210016

收稿日期:2024-06-19 修回日期:2024-11-20 出版日期:2025-06-05 发布日期:2025-07-12
作者简介:刘晓军，男，1993年出生，博士研究生。主要研究方向为连续纤维增强复合材料增材制造工艺与装备。E-mail：liuxj0304@163.com;单忠德(通信作者)，男，1970年出生，博士，研究员，博士研究生导师。主要研究方向为数字化机械装备与先进成形制造技术。E-mail：shanzd@nuaa.edu.cn
基金资助:
国家重点研发计划(2023YFB4605302)和中国机械科学研究总院技术发展基金(332301Q9,332202Q9,332201Q9)资助项目。

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

LIU Xiaojun^1,2, SHAN Zhongde³, LIU Jianhua¹, LI Zhikun², JIANG Xibin², LI Hao²

1. School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081;
2. State Key Laboratory of Advanced Forming Technology and Equipment, Beijing 100044;
3. College of Mechanical & Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016

Received:2024-06-19 Revised:2024-11-20 Online:2025-06-05 Published:2025-07-12

摘要/Abstract

摘要： 连续纤维复合材料的打印精度直接影响构件的外形尺寸和装配精度。以共形相控阵天线的封装结构及蜂窝填充结构为具体研究对象，开展连续纤维复合材料丝材打印精度的研究。首先建立了连续纤维丝材在打印过程的受力模型，分析了其在打印过程中的受力情况，并结合受力情况研究了圆弧、直线和直角特征在打印过程中的精度损失机理；然后分析了工艺参数对圆弧和直角特征打印精度的影响，最后完成了典型封装结构件及蜂窝结构件的打印成形。研究结果表明，打印精度主要由丝材所受的摩擦力和粘结力控制，当摩擦力大于粘结力时，容易发生丝材滑移或脱粘；圆弧的最小打印半径受打印速度和层厚的共同影响，0.3 mm层厚的参数组合，成形大曲率圆弧的能力较高；打印直角的长度损失和面积损失受打印速度和层厚的共同影响，两者均随打印速度和层厚的提高而增大；0.3 mm层厚的参数组合有较高的稳定打印精度的能力。

关键词: 连续纤维, PEEK, 复合材料, 3D打印, 精度

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

中图分类号:

TD406

刘晓军, 单忠德, 刘检华, 李志坤, 姜稀膑, 李昊. 连续纤维增强PEEK复合材料3D打印精度研究[J]. 机械工程学报, 2025, 61(11): 361-375.

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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连续纤维增强PEEK复合材料3D打印精度研究

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

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