Verification of the positioning accuracy of industrial coordinate measuring machine using optical-comb pulsed interferometer with a rough metal ball target

Autor: Kiyoshi Takamasu, Satoru Takahashi, Hirokazu Matsumoto, Wiroj Sudatham
Rok vydání: 2015
Předmět:
Zdroj: Precision Engineering. 41:63-67
ISSN: 0141-6359
DOI: 10.1016/j.precisioneng.2015.01.007
Popis: An optical-comb pulsed interferometer was developed for the positioning measurements of the industrial coordinate measuring machine (CMM); a rough metal ball was used as the target of the single-mode optical fiber interferometer. The measurement system is connected through a single-mode fiber more than 100 m long. It is used to connect a laser source from the 10th floor of a building to the proposed measuring system inside a CMM room in the basement of the building. The repetition frequency of a general optical comb is transferred to 1 GHz by an optical fiber-type Fabry–Perot etalon. Then, a compact absolute position-measuring system is realized for practical non-contact use with a high accuracy of measurement. The measurement uncertainty is approximately 0.6 μm with a confidence level of 95%.
Databáze: OpenAIRE