Current Stereolithography (SL) can fabricate three-dimensional (3D) objects in a single scale level, e.g. printing macro-scale or micro-scale objects. However, it is difficult for the SL printers to fabricate a 3D macro-scale object with micro-scale features. In the paper a novel SL-based multi-scale fabrication method is presented to address such a problem. The developed SL process can fabricate multi-scale features by dynamically changing the shape and size of a laser beam. Different shaped beams are realized by switching apertures with different micro-patterns. The laser beam without using any micro-patterns is used to fabricate the macro-scale features, while the shaped laser beams with smaller sizes are used to fabricate micro-patterned features. Accordingly, the tool path planning method for the multi-scale fabrication process are developed so that macro-scale and micro-scale features can be built by using different layer thicknesses, laser exposure time, and scanning paths. Compared with the conventional SL process based on a fixed laser beam size, our process can fabricate multi-scale features in a 3D object. It also has fast fabrication speed and good surface quality.
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ASME 2017 12th International Manufacturing Science and Engineering Conference collocated with the JSME/ASME 2017 6th International Conference on Materials and Processing
June 4–8, 2017
Los Angeles, California, USA
Conference Sponsors:
- Manufacturing Engineering Division
ISBN:
978-0-7918-5073-2
PROCEEDINGS PAPER
Multi-Scale Stereolithography Using Shaped Beams
Huachao Mao
,
Huachao Mao
University of Southern California, Los Angeles, CA
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Yuen-Shan Leung
,
Yuen-Shan Leung
University of Southern California, Los Angeles, CA
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Yuanrui Li
,
Yuanrui Li
University of Southern California, Los Angeles, CA
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Pan Hu
,
Pan Hu
University of Southern California, Los Angeles, CA
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Wei Wu
,
Wei Wu
University of Southern California, Los Angeles, CA
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Yong Chen
Yong Chen
University of Southern California, Los Angeles, CA
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Huachao Mao
University of Southern California, Los Angeles, CA
Yuen-Shan Leung
University of Southern California, Los Angeles, CA
Yuanrui Li
University of Southern California, Los Angeles, CA
Pan Hu
University of Southern California, Los Angeles, CA
Wei Wu
University of Southern California, Los Angeles, CA
Yong Chen
University of Southern California, Los Angeles, CA
Paper No:
MSEC2017-3031, V002T01A033; 11 pages
Published Online:
July 24, 2017
Citation
Mao, H, Leung, Y, Li, Y, Hu, P, Wu, W, & Chen, Y. "Multi-Scale Stereolithography Using Shaped Beams." Proceedings of the ASME 2017 12th International Manufacturing Science and Engineering Conference collocated with the JSME/ASME 2017 6th International Conference on Materials and Processing. Volume 2: Additive Manufacturing; Materials. Los Angeles, California, USA. June 4–8, 2017. V002T01A033. ASME. https://doi.org/10.1115/MSEC2017-3031
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