Diagonal in space of coordinate measuring machine verification using an optical-comb pulsed interferometer with a ball-lens target
| Autor: | Kiyoshi Takamasu, Wiroj Sudatham, Satoru Takahashi, Hirokazu Matsumoto |
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| Rok vydání: | 2016 |
| Předmět: |
0209 industrial biotechnology
Accuracy and precision Engineering business.industry System of measurement General Engineering Physics::Optics 02 engineering and technology Test method Coordinate-measuring machine 01 natural sciences 010309 optics Length measurement Interferometry 020901 industrial engineering & automation Rubidium standard Optics 0103 physical sciences Measurement uncertainty business |
| Zdroj: | Precision Engineering. 43:486-492 |
| ISSN: | 0141-6359 |
| DOI: | 10.1016/j.precisioneng.2015.09.017 |
| Popis: | This paper presents a new optical method of coordinate measuring machine (CMM) verification. The proposed system based on a single-mode fiber optical-comb pulsed interferometer with a ball lens of refractive index 2 employed as the target. The target can be used for absolute-length measurements in all directions. The laser source is an optical frequency comb, whose repetition rate is stabilized by a rubidium frequency standard. The measurement range is confirmed to be up to 10 m. The diagonals of a CMM are easier to verify by the proposed method than by the conventional artifact test method. The measurement uncertainty of the proposed method is also smaller than that of the conventional method because the proposed measurement system is less affected by air temperature; it achieves an uncertainty of approximately 7 μm for measuring lengths of 10 m. The experimental results show that the measurement accuracy depends on noise in the interference fringe, which arises from airflow fluctuations and mechanical vibrations. |
| Databáze: | OpenAIRE |
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