This research applies ATOS, an optical scanning device, to scan fan blades which possess overlapped geometry between blades. The surfaces to be investigated include a pressure surface, a suction surface and two hub surfaces adjacent to the pressure and suction surfaces respectively. Through numerous scanning practices, rules are found to position the fan blades in proper orientations so that data points of the four types of fan-blade surfaces can be completely obtained. The scanning sequence include: (1) rotate the fan with respect to the z-axis so that the fan can be set parallel to the straight-line connecting the two cameras of ATOS, (2) rotate the fan with respect to the x-axis so that the whole pressure surface can be located inside the scanning region of cameras, (3) rotate the fan w.r.t. the z-axis to let the suction surface be completely scanned, (4) rotate the fan w.r.t. the y-axis so that the hub surface can be located inside the camera scanning region, and (5) rotate the fan w.r.t. the z-axis so that the other hub surface can be scanned. To verify the proposed scanning sequence, this research uses Pro/Toolkit and Visual C++ to develop the programming codes so that the positioning angles for the four different types of surfaces can be automatically found from the Pro/ENGINEER part model of a fan. The goal of automatic positioning for scanning of fan blades can thus be achieved. It is concluded that the research results contribute the possibility of scanning overlapped fan blades in an automation manner, and also in little time-span.
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ASME 8th Biennial Conference on Engineering Systems Design and Analysis
July 4–7, 2006
Torino, Italy
ISBN:
0-7918-4251-7
PROCEEDINGS PAPER
Automatic Positioning for Optical Scanning of Overlapping Fan-Blades Available to Purchase
Alan C. Lin,
Alan C. Lin
National Taiwan University of Science and Technology, Taipei, Taiwan
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Jun-Chung Wu
Jun-Chung Wu
National Taiwan University of Science and Technology, Taipei, Taiwan
Search for other works by this author on:
Alan C. Lin
National Taiwan University of Science and Technology, Taipei, Taiwan
Jun-Chung Wu
National Taiwan University of Science and Technology, Taipei, Taiwan
Paper No:
ESDA2006-95150, pp. 663-672; 10 pages
Published Online:
September 5, 2008
Citation
Lin, AC, & Wu, J. "Automatic Positioning for Optical Scanning of Overlapping Fan-Blades." Proceedings of the ASME 8th Biennial Conference on Engineering Systems Design and Analysis. Volume 4: Fatigue and Fracture, Heat Transfer, Internal Combustion Engines, Manufacturing, and Technology and Society. Torino, Italy. July 4–7, 2006. pp. 663-672. ASME. https://doi.org/10.1115/ESDA2006-95150
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