High-precision method for measuring large diameter on-line

Qiancheng Zhao; Xiaoli Luo; Changyou Lu; Yingfu Guo

doi:10.1117/12.819756

31 December 2008 High-precision method for measuring large diameter on-line

Qiancheng Zhao, Xiaoli Luo, Changyou Lu, Yingfu Guo

Proceedings Volume 7130, Fourth International Symposium on Precision Mechanical Measurements; 71305G (2008) https://doi.org/10.1117/12.819756
Event: Fourth International Symposium on Precision Mechanical Measurements, 2008, Anhui, China

Abstract

An apparatus, mainly being made up of 3 displacement sensors, for measuring large diameter from Chord Length and Bow Altitude is designed, and the diameter measuring uncertainty is discussed in detail. The chord length, being calibrated with two standard circles, is selected matching with the dimension of measured large diameter. A series of techniques, including of sensors being set symmetrically, relative measuring method, and averaging the measuring results, are presented, so that the structure of measurement apparatus, the processes of calibration and measuring are to be simplified, with the measuring precision being improved. The results show the uncertainty of estimated values of diameter is about 3 μm, when some conditions are restricted.

Citation Download Citation

Qiancheng Zhao, Xiaoli Luo, Changyou Lu, and Yingfu Guo "High-precision method for measuring large diameter on-line", Proc. SPIE 7130, Fourth International Symposium on Precision Mechanical Measurements, 71305G (31 December 2008); https://doi.org/10.1117/12.819756

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