Design of ultrasonic standing wave levitation support for three-dimensional printed filaments.
Design of ultrasonic standing wave levitation support for three-dimensional printed filaments.
复制标题
三维打印长丝超声驻波悬浮支撑设计。
DOI：
10.1121/10.0003922
复制
发表时间：
2021-04
影响因子：
2.4
通讯作者：
Li Yuqiang
中科院分区：
文献类型：
--
作者：
Wu Huaying;Zhu Jingjun;Wang Xuan;Li Yuqiang
熔融沉积成型 (FDM) 三维 (3D) 打印是通过逐层沉积熔融热塑性材料来形成零件的过程。在 3D 打印中，需要在悬挑或桥梁下方添加支撑结构。本文通过研究灯丝悬浮的方法，提出了无支撑FDM打印的思路。本文设计了一种超声相控阵装置，通过多个驻波点将长度远大于声波波长的不同细长物体悬浮在空气中。实验表明，细长物体可以稳定地保持在驻波场的声压节点处。在FDM打印中添加超声波场后，桥结构上单丝因重力而产生的最大变形从5毫米减小到2毫米。这证明超声相控阵系统在无支撑FDM打印领域发挥重要作用是可行的。
Fused deposition modeling (FDM) three-dimensional (3D) printing is the process of forming a part by depositing molten thermoplastic materials layer by layer. Support structures need to be added below the overhangs or bridges in 3D printing. This paper proposes an idea for support-free FDM printing by studying the method of filament levitation. In this paper, an ultrasonic phased array device is designed, and different slender objects with length much longer than the sound wavelength are levitated in the air by multiple standing wave points. Experiments show that slender objects can be stably held at the sound pressure nodes in the standing wave field. After adding the ultrasonic field in FDM printing, the maximum deformation of single filament due to gravity on the bridge structure decreases from 5 to 2 mm. This proves that it is feasible for an ultrasonic phased array system to play an important role in the field of support-free FDM printing.