Direct 3D printing of multi-level voxel models
Direct 3D printing of multi-level voxel models
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DOI：
10.1016/j.addma.2021.101929
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发表时间：
2021-04
影响因子：
11
通讯作者：
Sambit Ghadai;Anushrut Jignasu;A. Krishnamurthy
中科院分区：
文献类型：
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作者：
Sambit Ghadai;Anushrut Jignasu;A. Krishnamurthy
我们提出了一种直接增材制造多层次体素化模型的方法，可以获得更好的表面光洁度。我们开发了一种新的多层次步进方形算法来识别多层次体素化模型的边界。我们还开发了基于用户定义的填充密度使用多级体素化来执行填充操作的方法。我们直接生成GCode，然后输入到3D打印机中进行打印。我们的方法克服了与标准CAD模型的切片操作相关的问题。此外，我们可以直接打印从CT或MRI扫描输出的阈值体素模型，以获得医疗数据的物理3D表示。通过直接打印复杂CAD几何图形和心脏CT数据的多级体素表示的测试模型，我们证明了我们的方法表现良好。
We present a direct method for the additive manufacturing of multi-level voxelized models that achieves a better surface finish. We have developed a new multi-level marching squares algorithm to identify the boundary of the multi-level voxelized model. We have also developed methods to use the multi-level voxelization to perform the infill operation based on user-defined infill density. We directly generate the GCode that is input into the 3D printer for printing. Our method overcomes the issues associated with the slicing operation for standard CAD models. In addition, we can directly print thresholded voxel models that are output from CT or MRI scans to get a physical 3D representation of medical data. We show that our method performs well by directly printing test models of multi-level voxel representation of complex CAD geometries, and cardiac CT data.