Direct 3d Layer Metal Deposition and Toolpath Generation
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.
J. Ruan et al., "Direct 3d Layer Metal Deposition and Toolpath Generation," ASME Proceedings - 34th Design Automation Conference, American Society of Mechanical Engineers (ASME), Jan 2008.
The definitive version is available at http://dx.doi.org/10.1115/DETC2008-50062
ASME 2008 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
Mechanical and Aerospace Engineering
Keywords and Phrases
Metals; Manufacturing; Machining; Shapes; Thickness; Construction; Geometry
Article - Journal
© 2008 American Society of Mechanical Engineers (ASME), All rights reserved.