熔丝制造的三维连续编织填充图案  

FFF of a three-dimensional continuous weaving filling pattern

作　　者：吴焕晓 姚远 杨金秀[1] 丁成 WU Huan-xiao;YAO Yuan;YANG Jin-xiu;DING Cheng(School of Mechatronic Engineering and Automation,Shanghai University,Shanghai 200444,China;Engineering Training Center,Shanghai University,Shanghai 200444,China)

机构地区：[1]上海大学机电工程与自动化学院,上海200444 [2]上海大学工程技术中心,上海200444

出　　处：《图学学报》2022年第2期342-347,共6页Journal of Graphics

摘　　要：为提高熔丝制造(FFF)工件的机械强度,降低各向异性,提出一种3D连续编织路径规划方法。采用连续纤维增强丝材作为打印材料,设计了1个8层循环结构,利用3D打印机喷嘴挤出丝材生成经纬纱线,控制FFF平台在z方向的运动,生成类似3D编织的连续沉积路径,不同层的纤维相互交错和嵌入以实现相邻切片平面之间的互锁,以提高层内与层间的连接强度。这种循环结构支持连续的路径规划,因此能够在常规三轴FFF平台上进行制造,具有广泛的适用性。通过与标准样品进行对比,验证了编织结构的合理性和可行性。实验表明,3D连续纤维编织打印路径能够支持不同结构的填充,并能够有效降低由于材料分层沉积产生的机械性能的各向异性,提高具有复杂结构打印件的可靠性。In order to improve the mechanical strength and reduce the anisotropy of fused filament fabrication(FFF)workpiece, a three-dimensional continuous braiding path planning method was proposed. The method employed continuous fiber reinforced material as printed material, designed an eight-loop structure, and utilized 3D printer nozzle to extrude wire for the generation of warp/weft yarn. The movement of the FFF platform was controlled in z direction, continuous deposition route similar to 3D woven fiber was produced, and different layers were mutually interacted and embedded in order to realize interlock between adjacent section planes, thus improving the connection strength within and between layers. This cyclic structure supported continuous path planning, so that it can be manufactured on a conventional three-axis fuse manufacturing platform and be widely applicable. Compared with the standard sample, the rationality and feasibility of the braided structure were verified. Experiments show that the 3D continuous fiber braided printing path can support the filling of different structures, and can effectively reduce the anisotropy of mechanical properties caused by layered deposition of materials, thereby enhancing the reliability of printing pieces with complex structures.

关 键 词：增材制造 连续纤维 3D编织 连续路径 各向异性 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]