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CLC number: TH161.12

On-line Access: 2019-01-04

Received: 2017-05-04

Revision Accepted: 2017-11-01

Crosschecked: 2018-07-10

Cited: 0

Clicked: 7805

Citations:  Bibtex RefMan EndNote GB/T7714

 ORCID:

Yu-an Jin

https://orcid.org/0000-0003-3775-6162

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Journal of Zhejiang University SCIENCE A 2019 Vol.20 No.1 P.73-82

http://doi.org/10.1631/jzus.A1700236


Variable bead width of material extrusion-based additive manufacturing


Author(s):  Jun Wang, Ting-wei Chen, Yu-an Jin, Yong He

Affiliation(s):  School of Mechanical Engineering and Mechanics, Ningbo University, Ningbo 315211, China; more

Corresponding email(s):   jinyuan@nbu.edu.cn

Key Words:  Extrusion-based additive manufacturing, Variable bead width, Process parameters, Analytical models, Experimental applications


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Jun Wang, Ting-wei Chen, Yu-an Jin, Yong He. Variable bead width of material extrusion-based additive manufacturing[J]. Journal of Zhejiang University Science A, 2019, 20(1): 73-82.

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Abstract: 
variable bead width in material extrusion-based additive manufacturing (MEAM) is studied to enhance flexibility and capability. Discussion on associated process parameters, including the layer thickness, material flow rate, and travel feed rate is conducted to deduce their potential influence on the bead width of deposited filaments. Then the analytical models are established to analyze their effects on the bead width quantitatively. Based on the theoretical and experimental analyses, the material extrusion flow rate is selected as the input variable to control the bead width during the extrusion and deposition processes. The proposed method is implemented and verified with deposition of a multi-layer but single column thin-walled structure. Based on the implementation of several applications, it is concluded that the bead width could be achieved by adjusting some related process parameters and it can facilitate the extension and application of extrusion-based additive manufacturing technology.

This paper investigates the effects of process parameters, namely layer thickness, flow rate, and travel speed rate, on the bead width of material extrusion-based additive manufacturing processes. The applications of variable bead width to extrusion-based AM are described.

面向材料挤出成型增材制造的自适应丝宽研究

目的:材料挤出成型增材制造技术在成形质量与加工效率方面仍有很大的提升空间. 本文通过探究成形过程中的关键参数(打印速度和施加气压)对挤出丝宽的影响,研究实现可变丝宽的方法,提出自适应丝宽在提升工艺方面的应用,从而提高该工艺的适用性.
创新点:1. 通过实验与物理模型结合的方法,推导关键参数与丝宽的函数关系; 2. 基于增材制造技术的工艺特点,提出自适应丝宽在该工艺中的典型应用.
方法:1. 通过物理模型分析与数学推导,构建挤出丝宽与关键过程参数的函数关系,得到众多过程参数中对丝宽影响最为显著的两个参数; 2. 通过实验分析与对比,对构建的数学模型进行验证; 3. 提出自适应可变丝宽的实现方法及典型应用的实施方案.
结论:1. 挤出成型增材制造技术可以通过参数调节获得可控的挤出丝宽; 2. 两大关键工艺参数与丝宽之间存在关联函数; 3. 运用自适应可变丝宽可以提高工艺的适用性.

关键词:挤出成型; 工艺参数; 可变丝宽; 典型应用

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

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