Title :
Design and Evaluation of Digital Mirror System for SLS process
Author :
Kim, Dong-Soo ; Bae, Sung-Woo ; Kim, Chung-Hwan ; Cho, Jung-Dae ; Choi, Byung-Oh
Author_Institution :
Intelligence & Precision Machinery Res. Div., Korea Inst. of Machinery & Mater., Daejeon
Abstract :
Selective laser sintering (SLS) is currently recognized as a leading process in the new field of solid freeform fabrication (SFF). In order to develop more elaborate and speedy system for fabricating large objects compared to existing SLS, this study employs digital mirror system (DMS) for selective laser sintering (SLS) process. DMS contains 3-axis dynamic focusing lens, zoom beam expander, x-y galvano mirror, reflection mirrors for scanning large area instead of the existing fthetas lens used in commercial SLS. Also, in the SLS, the sintering temperature, laser beam power and layer thickness have a great influence on sintering of the polymer. Experiments were performed to evaluate the effect of a scanning path and fabrication parameters on sintering process and to fabricate the various 3D objects using polymer
Keywords :
laser sintering; lenses; mirrors; optical design techniques; optical fabrication; optical focusing; optical polymers; rapid prototyping (industrial); 3-axis dynamic focusing lens; 3D objects; digital mirror system design; optical polymer; reflection mirrors; selective laser sintering process; solid freeform fabrication; x-y galvano mirror; zoom beam expander; Laser beams; Laser sintering; Lenses; Mirrors; Optical device fabrication; Optical reflection; Polymers; Power lasers; Solid lasers; Temperature; 3-axis Dynamic focusing lens; DMS(Digital Mirror System); SLS(Selective Laser Sintering); Zoom beam expander;
Conference_Titel :
SICE-ICASE, 2006. International Joint Conference
Conference_Location :
Busan
Print_ISBN :
89-950038-4-7
Electronic_ISBN :
89-950038-5-5
DOI :
10.1109/SICE.2006.314928
