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Vis Inf  2017, Vol. 1 Issue (1): 9-15    DOI: 10.1016/j.visinf.2017.01.002
论文     
3D打印中的无支撑内部镂空
Support-free interior carving for 3D printing
Yue Xie, Xiang Chen
 State Key Lab of CAD & CG, Zhejiang University, Hangzhou 310058, China
 全文: PDF 
摘要:

背景:为满足功能设计的需要,一些产品内部需要镂空,其制造过程常涉及麻烦的切割和粘合处理。

创新:本文提出了一种生成内部空腔的方法,不仅可满足功能设计的要求,而且在3D打印过程中无需支撑。具体而言,我们引入了一种无需支撑的单元结构来进行体素化,并提出了一种壁厚参数化方法以支持连续优化。此外还设计了一个离散抖动算法来打印鬼影体素(ghost voxel),通过交替优化和抖动来迭代地实现产品内部镂空。我们运用该方法优化了产品的静态和旋转稳定性,并打印了各种结果来检验算法的功效。


关键词: 内部镂空无支撑体素抖动形状优化3D打印    
Abstract:
Recent interior carving methods for functional design necessitate a cumbersome cut-and-glue process in fabrication. We propose a method to generate interior voids which not only satisfy the functional purposes but are also support-free during the 3D printing process. We introduce a support-free unit structure for voxelization and derive the wall thicknesses parametrization for continuous optimization. We also design a discrete dithering algorithm to ensure the printability of ghost voxels. The interior voids are iteratively carved by alternating the optimization and dithering. We apply our method to optimize the static and rotational stability, and print various results to evaluate the efficacy.
Key words: Interior carving    Support-free    Voxels dithering    Shape optimization    3D printing
出版日期: 2017-07-06
基金资助: This work is partially supported by the NSF of China (No. 61303136).
通讯作者: Xiang Chen     E-mail: xchen@cad.zju.edu.cn
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引用本文:

Yue Xie, Xiang Chen. Support-free interior carving for 3D printing. Vis Inf, 2017, 1(1): 9-15.

链接本文:

http://www.zjujournals.com/vi/CN/10.1016/j.visinf.2017.01.002        http://www.zjujournals.com/vi/CN/Y2017/V1/I1/9

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