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28 December 2010 Factorial tests for the air beam assisted form error in-process optical measurement
Y. Zhang, Y. Gao, K. Li
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Proceedings Volume 7544, Sixth International Symposium on Precision Engineering Measurements and Instrumentation; 754402 (2010) https://doi.org/10.1117/12.885879
Event: Sixth International Symposium on Precision Engineering Measurements and Instrumentation, 2010, Hangzhou, China
Abstract
Form error in-process optical measurement is to provide feedback during a machining process for precision control. Based on the method of water beam assisted form error in-process optical measurement, a new air beam approach was proposed to solve the problems of coolant dilution and optical transmittance through multiple media. In order to identify key parameters to reduce the workload of experimental tests, a factorial test was conducted on transparent window size At and stability est. Calibration and assessment of At and est were introduced. Factorial test design was also examined. Results of the study show that vt, va, and da are the key parameters on At. Although all 6 main parameters are not significant, vt is relatively more important on est. When vt increases, At will decrease. When va or da increases, At will increase. The findings agree with our understanding of the physical process of fluid flow. When vt decreases, the transparent window size stability est will be better. Consider both stability est and air velocity va, Run 11 should be the best choice of conditions for At. A larger transparent window size At typically gives better transparent window size stability est. To achieve a balance between est and va, a suitable size of transparent window at At=~30 mm2 should be a good choice. Further studies are necessary to confirm the findings.
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Y. Zhang, Y. Gao, and K. Li "Factorial tests for the air beam assisted form error in-process optical measurement", Proc. SPIE 7544, Sixth International Symposium on Precision Engineering Measurements and Instrumentation, 754402 (28 December 2010); https://doi.org/10.1117/12.885879
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KEYWORDS
Astatine
Optical testing
CCD cameras
Lanthanum
Process control
Calibration
Error analysis
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