复合材料预制体单边弯针缝合装备技术研究

复合材料科学与工程 ›› 2019, Vol. 0 ›› Issue (11): 86-94.

复合材料预制体单边弯针缝合装备技术研究

封桥桥, 文立伟^*, 肖军, 王宇

南京航空航天大学材料科学与技术学院,南京 210016

收稿日期:2019-02-20 出版日期:2019-11-28 发布日期:2019-11-28
通讯作者: 文立伟(1970-),男,博士,副教授,主要从事复合材料自动化成型技术方面的研究,wenliwei@nuaa.edu.cn。
作者简介:封桥桥(1991-),男,硕士,主要从事复合材料缝合装备及缝合工艺方面的研究。
基金资助:
“高档数控机床与基础制造装备”科技重大专项(2016ZX04002-005-02);江苏高校优势学科建设工程

RESEARCH ON THE TECHNOLOGY OF SINGLE-SIDED CURVED NEEDLE STITCHING EQUIPMENT OF THE COMPOSITES PREFORM

FENG Qiao-qiao, WEN Li-wei^*, XIAO Jun, WANG Yu

College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

Received:2019-02-20 Online:2019-11-28 Published:2019-11-28

摘要/Abstract

摘要： 三维缝合技术不仅能够显著改善复合材料的层间性能,提高其抗分层性和抗冲击损伤容限,结合液体成型工艺,还可以实现复合材料结构整体化成型。本文以复合材料单边缝合技术为研究背景,开展复合材料单边弯针缝合装备技术的研究。首先从分析单边弯针缝合装备的功能需求和平台总体规划方案入手,设计并制造出一种单边弯针缝合头;然后针对该类缝合线迹的稳定化成型因素进行了讨论与分析,确定了在单个缝合周期内缝合头末端执行部件之间相互协调的位移时间关系曲线,确定了最佳线环形态以及缝线供需平衡关系表达式;最后通过试缝试验证明该缝合装备对纤维预制体的缝合能够形成平滑稳定的链式线迹,并最终实现良好的缝合效果。

关键词: 复合材料预制体, 单边弯针缝合, 盲缝线迹, 装备设计, 稳态线环

Abstract: Three-dimensional stitching technology can not only significantly improve the inter-laminar properties of composite materials, the delamination resistance and impact damage tolerance, but also combine the liquid forming process to realize the integrated structure of composite materials. In this paper, the single-sided stitching technology of composite materials was taken as the research background, and the study on stitching equipment for single-sided curved needle of composite materials was carried out. By analyzing the functional requirements of the stitching equipment, the overall planning scheme of the equipment was proposed, and a single-sided curved needle stitching head was designed and developed. Subsequently, the stabilizing forming factors of the stitches were discussed and analyzed. The displacement-time relationship between the end effector of the stitching head in a stitching cycle was determined, and the optimal loop shape and the expression of the balance of supply and demand of the thread was derrmined. Finally, the trial sewing test proved that the stitching equipment can form a smooth and stable chain stitch on the fiber preform, and achieve good stitching effect.

Key words: composites preform, single-sided curved needle stitching, blind stitch, equipment design, steady-state loop

中图分类号:

TB332

封桥桥, 文立伟, 肖军, 王宇. 复合材料预制体单边弯针缝合装备技术研究[J]. 复合材料科学与工程, 2019, 0(11): 86-94.

FENG Qiao-qiao, WEN Li-wei, XIAO Jun, WANG Yu. RESEARCH ON THE TECHNOLOGY OF SINGLE-SIDED CURVED NEEDLE STITCHING EQUIPMENT OF THE COMPOSITES PREFORM[J]. Composites Science and Engineering, 2019, 0(11): 86-94.

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