late 1999 to early 2000 (and backfills for previous years) / DB reference years
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Author Luo, Ren C. Lee, Wei Zen.
Source Proceedings - IEEE International Conference on Robotics & Automation. v 4 1999. p 3079-3084.
Abstract A rapid prototyping machine system which combines three axes PC-based controller with thermal extrusion method is presented. The main features of this system are to build up a physical object model through the extrusion of thin thermal plastic material and built-up layer by layer. User can use this system to turn CAD (Computer Aided Design) model into physical object model. Hardware design includes three axes working table, a thermal extrusion head, and a PC-based control system. The rapid prototyping system software includes CAD-model Slicing Process and 2D-layer Cross Sectional Fill Generation Algorithms. The process begins with the design of a conceptual geometric CAD model of an object. The cross sectional STL format data is interfaced to the rapid prototyping machine system. The machine has three axes working table and move relative to each other along XYZ axes in a predetermined pattern to create three-dimensional model by extruding ABS (Acrylonitrile-Butadiene-Styrenes) material. The s ystem can extend to use other plastic materials from the thermal extrusion head and build up model layer by layer. (Auth abstract) [References: 9] XX