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

fYear

2006

Firstpage

3670

Lastpage

3673

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;

fLanguage

English

Publisher

ieee

Conference_Titel

SICE-ICASE, 2006. International Joint Conference

Conference_Location

Busan

Print_ISBN

89-950038-4-7

Electronic_ISBN

89-950038-5-5

Type

conf

DOI

10.1109/SICE.2006.314928

Filename

4108400