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Proceedings Paper

Dwell time calculation for computer controlled large tool
Author(s): Bin Fan; James H. Burge; Hubert Martin; Zhige Zeng; Xiaojin Li; Jiabin Zhou
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Paper Abstract

The Computer-controlled Large-tool such as the stressed-lap which firstly developed in the Steward Observatory Mirror Lab (SOML) [1]and the Computer controlled active lap which developed in the IOE (Institute of Optics and Electronics, Chinese Academy of Science), those large tools are controlled by computer to manufacturing large optics, especially for grinding with loose abrasive and polishing with slurry. Comparing the fixed orbital lap, computer-controlled largetool can bend its lap surface timely to match the local sub-aperture, so it always strike the high area preferentially, due to its large diameter , computer-controlled large-tool possess highly remove efficiency and generate less middle-frequency and high-frequency errors comparing some small tools such as computer controlled optical surface (CCOS), but on the other hand how to calculate the dwell time for those computer-controlled large-tool becomes a challenge comparing those small tools. Based on the mathematical removal equation for computer controlled active lap we have none negative least square algorithm to calculate the dwell time, after the simulation, a optimized algorithm based on none negative least square is provided, the dwell time calculated by this optimized algorithm meet the wanted removal volume with little residual errors.

Paper Details

Date Published: 15 October 2012
PDF: 8 pages
Proc. SPIE 8415, 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, 84150A (15 October 2012); doi: 10.1117/12.978651
Show Author Affiliations
Bin Fan, Institute of Optics and Electronics (China)
The Univ. of Arizona (United States)
James H. Burge, The Univ. of Arizona (United States)
Hubert Martin, The Univ. of Arizona (United States)
Zhige Zeng, Institute of Optics and Electronics (China)
Xiaojin Li, Institute of Optics and Electronics (China)
Jiabin Zhou, Institute of Optics and Electronics (China)


Published in SPIE Proceedings Vol. 8415:
6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes
Wenhan Jiang; Myung K. Cho; Fan Wu, Editor(s)

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