1998 / Solid Freeform Fabrication Proceedings
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Author Alexandre L. Papadatos, Kenneth Stanley Jr., Said Ahzi, Frank W. Paul, Clemson University
Source Solid Freeform Fabrication Proceedings, 1998, pp 47-56
Abstract Current commercial Rapid Prototyping (RP) systems like Stereolithography (3D Svstems Corporation) and Selective Laser Sintering (DTM Corporation) use galvanometers from General Scanning Inc. (GSI) for the positioning of the laser beam. The GSI scanners are delivered as a 'black box". Operating Consoles which are usually Personal Computers (PC) have very few feedback from the performance of the GSI scanners. Therefore, the PC spends 90% or more of its time waiting for the GSI scanners to be over with the building of the current layer before sending the information regarding the next layer. Also, very little process control can be performed during, the scanning of a layer using the GSI scanners. This kind of setup prevents any dynamic controlling of the process that could prevent building errors like burning, warping etc. At Clemson University, our team has developed both hardware and software components that allows a dynamic control of the building, process. New features like scanning one vector with laser power as a function of position and/or time are now possible. Both hardware and software issues will be presented. (Auth abstract) [References: 7]
Solid Freeform Fabrication Proceedings can be obtained from: The Solid Freeform Fabrication Symposium
or contact:
The University of Texas at Austin
Laboratory for Freeform Fabrication / Texas Materials Institute
Mechanical Engineering Dept.
c/o The Solid Freeform Fabrication Symposium
MC C2200
Austin, TX 78712-1063 USA
512-471-3026; 512-471-7681 FX; Email: sffsymp@uts.cc.utexas.edu