Multi-axis slicing for solid freeform fabrication (SFF) manufacturing process can yield non-uniform thickness layers, or 3-D layers. Using the traditional parallel layer construction approach to build such a layer leads to a staircase which requires machining or other post processing to form the desired shape. This paper presents a direct 3-D layer deposition approach. This approach uses an empirical model to predict the layer thickness based on experimental data. The toolpath between layers is not parallel; instead, it follows the final shape of the designed geometry and the distance between the toolpath in the adjacent layers varies at different locations. Directly depositing a 3-D layer not only eliminates the staircase effect, but also improves the manufacturing efficiency by shortening the deposition and machining times. A single track deposition experiment has demonstrated these advantages. Thus, it is a beneficial addition to the traditional parallel deposition method.
- Design Engineering Division and Computers in Engineering Division
Direct 3D Layer Metal Deposition and Toolpath Generation
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Ruan, J, Tang, L, Sparks, TE, Landers, RG, & Liou, F. "Direct 3D Layer Metal Deposition and Toolpath Generation." Proceedings of the ASME 2008 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. Volume 1: 34th Design Automation Conference, Parts A and B. Brooklyn, New York, USA. August 3–6, 2008. pp. 597-603. ASME. https://doi.org/10.1115/DETC2008-50062
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