Borish Michael, Gibson Brian T, Adkins Cameron, Mhatre Paritosh
Oak Ridge National Laboratory, Knoxville, TN 37932, USA.
Materials (Basel). 2022 Jun 11;15(12):4152. doi: 10.3390/ma15124152.
The potential for site-specific, process-parameter control is an attribute of additive manufacturing (AM) that makes it highly attractive as a manufacturing process. The research interest in the functionally grading material properties of numerous AM processes has been high for years. However, one of the issues that slows developmental progress in this area is process planning. It is not uncommon for manual programming methods and bespoke solutions to be utilized for site-specific control efforts. This article presents the development of slicing software that contains a fully automated process planning approach for enabling through-thickness, process-parameter control for a range of AM processes. The technique includes the use of parent and child geometries for controlling the locations of site-specific parameters, which are overlayed onto unmodified toolpaths, i.e., a vector-based planning approach is used in which additional information, such as melt pool size for large-scale metal AM processes, is assigned to the vectors. This technique has the potential for macro- and micro-structural modifications to printed objects. A proof-of-principle experiment is highlighted in which this technique was used to generate dynamic bead geometries that were deposited to induce a novel surface embossing effect, and additional software examples are presented that highlight software support for more complex objects.
特定位置、工艺参数控制的潜力是增材制造（AM）的一个特性，这使得它作为一种制造工艺极具吸引力。多年来，人们对众多增材制造工艺的功能梯度材料特性的研究兴趣一直很高。然而，阻碍该领域发展进程的问题之一是工艺规划。在特定位置控制工作中使用手动编程方法和定制解决方案并不罕见。本文介绍了切片软件的开发，该软件包含一种全自动工艺规划方法，可实现一系列增材制造工艺的全厚度工艺参数控制。该技术包括使用父几何形状和子几何形状来控制特定位置参数的位置，这些参数叠加在未修改的刀具路径上，即使用基于矢量的规划方法，其中将诸如大型金属增材制造工艺的熔池尺寸等附加信息分配给矢量。该技术具有对打印对象进行宏观和微观结构修改的潜力。文中重点介绍了一个原理验证实验，其中使用该技术生成动态熔敷焊道几何形状，以产生一种新颖的表面压花效果，并给出了其他软件示例，突出了软件对更复杂对象的支持。
