Oriented to Multi-Branched Structure Unsupported 3D Printing Method Research
Oriented to Multi-Branched Structure Unsupported 3D Printing Method Research
复制标题
面向多分支结构无支撑3D打印方法研究
DOI：
10.3390/ma13092023
复制
发表时间：
2020-05-01
期刊：
影响因子：
3.4
通讯作者：
Lammer, Herfried
中科院分区：
文献类型：
--
作者：
Hu, Qingxi;Feng, Die;Lammer, Herfried
对于增材制造（AM）平台的传统三轴（3D）配置，当打印具有多分支结构的目标模型时，必须构造足够的支撑结构。为了消除打印过程中支撑的使用，本文提出了一种用于五轴AM的非定向无支撑3D打印方法。通过K-means聚类算法对模型进行粗划分，然后根据制造约束条件，采用局部动态搜索调整算法确定由一系列分离平面表示的细分解。模型的多分支结构被划分为简单的子部分，以便在不同方向上构建通用模型，并以其自身的部分作为支撑进行打印。两个案例研究进行了验证。实验结果表明，采用无支撑无定向3D打印方法可以在无支撑的情况下打印树枝模型，与传统3D打印方法相比，无支撑无定向3D打印方法可以节省18.72%~ 20.60%的材料和20.60%~ 23.33%的时间。
For the traditional three-axis (3D) configuration of the additive manufacturing (AM) platform, when printing the target model with a multi-branched structure, it is imperative to construct adequate support structures. To eliminate the use of support during the printing process, a non-directional unsupported 3D printing method for five-axis AM is proposed in this paper. By carrying out the K-means clustering algorithm, the coarse partition of the model is obtained, and then the fine decomposition represented by a sequence of separating planes is determined by a local dynamic search adjustment algorithm according to manufacturing constraints. The multi-branched structure of the model is divided into simple subparts so that the general model can be built in different directions and be printed with its own parts as the support. Two case studies were carried out for verification. The experimental results showed that the branch-model can be printed without support using the non-directional unsupported 3D printing method, and the non-directional unsupported 3D printing can save 18.72–20.60% of materials and 20.60–23.33% of time compared to conventional 3D printing.