尽可能连续地挤压制造表面模型
As-Continuous-As-Possible Extrusion Fabrication of Surface Models
摘要：
我们提出了一种新的计算框架，用于优化在基于挤出的3D打印机上制造表面模型的刀具路径连续性。刀具轨迹连续性一直是挤压加工中的一个关键问题，影响加工质量和效率。转移移动导致不光滑或颠簸的表面，并得到更糟的材料与大惯性，如粘土。对于表面模型，在表面质量和模型稳定性方面，连续性的影响甚至更为严重。在本文中，我们介绍了一个原始的标准“单路径补丁”（ESTA），用于表示一个壳表面补丁，可以在一个路径遍历考虑制造约束。我们研究的性质的一个曲面和合并操作的OPPs，并提出了一个自底向上的曲面合并程序分解成一个最小数量的OPPs和生成的“尽可能连续的”（ACAP）刀具路径。此外，我们自定义的路径规划算法与弯曲层打印方案，减少了楼梯缺陷，并提高了刀具路径的连续性，通过可能连接多个段。我们评估了陶瓷和热塑性材料的ACAP算法，结果表明，它提高了表面模型的制造在表面质量和效率。
英文摘要：
We propose a novel computational framework for optimizing the toolpath continuity in fabricating surface models on an extrusion-based 3D printer. Toolpath continuity has been a critical issue for extrusion-based fabrications that affects both quality and efficiency. Transfer moves cause non-smoothor bumpy surfaces and get worse for materials with large inertia like clay. For surface models, the effects of continuity are even more severe, in terms of surface quality and model stability. In this paper, we introduce an original criterion "one-path-patch" (OPP), for representing a shell surface patch that can be traversed in one path considering fabrication constraints. We study the properties of an OPP and the merging operations for OPPs, and propose a bottom-up OPP merging procedure for decomposing the given shell surface into a minimal number of OPPs and generating the "as-continuous-as-possible" (ACAP) toolpath. Furthermore, we customize the path planning algorithm with a curved layer printing scheme, which reduces the staircase defect and improves the toolpath continuity via possibly connecting multiple segments. We evaluate the ACAP algorithm for both ceramic and thermoplastic materials, and results demonstrate that it improves the fabrication of surface models in both surface quality and efficiency.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
