NDLI: Determining Optimal Building Direction for Rapid Prototyping Based on Unit Sphere Searching

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Li, Ye Zhang, Jian
Copyright Year	2012
Abstract	Although Rapid prototyping, as a material-additive process, is able to create complex geometries that traditional material-removal processes cannot achieve, it still suffers from its limitation due to the layer manufacturing nature. In order to minimize staircase effects, selection of building orientation is an important step in implementing rapid prototyping processes. This paper presents a method to select the optimal direction that leads to minimized volumetric error in building a part from layer manufacturing processes. A unit sphere is discretized first to give potential directions in a 3-D space, and then each facet comprising an STL geometric model is mapped onto the discretized unit sphere as a great circle individually. Both an exhaustive search and a chain searching strategy are presented to identify the globally optimal direction for building a 3-D geometry. At the end of the paper, examples are presented to show the effectiveness of the method.
Sponsorship	Design Engineering Division Computers and Information in Engineering Division
Starting Page	585
Ending Page	592
Page Count	8
File Format	PDF
ISBN	9780791845028
DOI	10.1115/DETC2012-70210
Volume Number	Volume 3: 38th Design Automation Conference, Parts A and B
Conference Proceedings	ASME 2012 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
Language	English
Publisher Date	2012-08-12
Publisher Place	Chicago, Illinois, USA
Access Restriction	Subscribed
Subject Keyword	Geometry Rapid prototyping Chain Errors Manufacturing
Content Type	Text
Resource Type	Article

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