ABSTRACT

This paper presents an improved mathematical model for calculation of distortion vectors of two aligned surface meshes. The model shows better accuracy when benchmarked to an existing model with exceptional mathematical conditions, such as sharp corners and small radii. The model was implemented into a developed distortion compensation digital tool and applied to an industrial component. The component was made of Inconel 718 and produced by laser powder bed fusion 3D printing technology. The digital tool was utilised to compensate the original design geometry by pre-distortion of its original geometry using the developed mathematical model. The distortion of an industrial component was reduced from approximately ±400 µm to ±100 µm for a challenging thin structure subjected to buckling during the build process.

摘要

本文提出了一种改进的数学模型，用于计算两个对齐的表面网格的变形矢量。当在具有特殊数学条件（例如尖角和小半径）的现有模型作为基准时，该模型显示出更高的准确性。该模型已实现为已开发的失真补偿数字工具，并已应用于工业组件。该组件由Inconel 718制成，并通过激光粉末床融合3D打印技术生产。利用开发的数学模型，通过数字工具对原始几何图形进行预失真，可以利用该数字工具来补偿原始设计几何图形。对于具有挑战性的薄型结构，在构建过程中会发生屈曲，工业组件的变形从大约±400 µm降低到±100 µm。