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Proceedings Paper

Study on detection method of inner wall of small-diameter workpiece based on cone reflector
Author(s): Wenjun Lu; Yao Yao; Chao Li; Xin Chen; Licheng Shen; Lihua Lei; Weibin Sun
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Paper Abstract

The image detection of the inner wall of the small-diameter workpiece is a difficult problem all along. The industrial endoscope is a common solution of this problem, but its measuring repeatability cannot be guaranteed and it results a large image distortion. In this paper, for this problem, a new method based on the cone reflector has been presented. Firstly, this method introduces a 45-degree cone reflector innovatively, which is placed within the workpiece. Secondly, the optical devices are placed outside, which simplifies the measuring structure and make the adjustment of the optical system easier. Finally, an image conversion method is proposed, making the image observation more intuitive. Though analyses and experiments, the resolution of images obtained from the inner wall can be achieved 10μm/pixel. Meanwhile, the efficiency of measurement has been greatly improved.

Paper Details

Date Published: 10 October 2013
PDF: 7 pages
Proc. SPIE 8916, Sixth International Symposium on Precision Mechanical Measurements, 891646 (10 October 2013); doi: 10.1117/12.2036090
Show Author Affiliations
Wenjun Lu, Shanghai Jiao Tong Univ. (China)
Yao Yao, Shanghai Institute of Spaceflight Control Technology (China)
Chao Li, Shanghai Institute of Spaceflight Control Technology (China)
Xin Chen, Shanghai Jiao Tong Univ. (China)
Licheng Shen, Shanghai Institute of Spaceflight Control Technology (China)
Lihua Lei, Shanghai Institute of Measurement and Testing Technology (China)
Weibin Sun, Shanghai Institute of Measurement and Testing Technology (China)


Published in SPIE Proceedings Vol. 8916:
Sixth International Symposium on Precision Mechanical Measurements
Shenghua Ye; Yetai Fei, Editor(s)

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