Exploratory Research on the Length Measuring Error Calibration of Industrial CT
SONG Xu1, SHI Yu-shu2,3, SONG Xiao-ping2, LI Dong-sheng1, CHEN Si-wen3, LI Shi2, GAO Si-tian2
1. College of Metrological Technology and Engineering, China Jiliang University, Hangzhou, Zhejiang 310018, China;
2. National Institute of Metrology, Beijing 100029, China;
3. State Key Laboratory of Precision Measuring Technology and Instruments, Tianjin University, Tianjin 300072, China
Abstract：An exploratory research on the length measuring error calibration of industrial CT is carried out to move forward on the traceability of industrial CT in dimensional measurement. The length measuring error of industrial CT can be classified to two types: sphere distance error and plane distance error. For the widely accepted sphere distance error, a tiny forest-ball is developed, and calibrated by a high precision coordinated measuring machin. Then the tiny forest-ball is used to calibrate an industrial CT called Metrotom 1500, the sphere distance error is smaller than ±2 μm, and smaller than the maximum permissible error of this machine. For the plane distance error, an exploratory experiment is conducted with steel gauge blocks and ceramic gauge blocks, and the plane distance error is out of the maximum permissible error. The experiment result shows that it is very different to calibrate the length measuring error of industrial CT by sphere distance and plane distance, and the plane distance error is much larger than sphere distance error when measuring a same length.
宋旭,施玉书,宋小平,李东升,陈思文,李适,高思田. 工业CT长度测量误差校准的探索研究[J]. 计量学报, 2015, 36(3): 225-228.
SONG Xu, SHI Yu-shu, SONG Xiao-ping, LI Dong-sheng, CHEN Si-wen, LI Shi, GAO Si-tian. Exploratory Research on the Length Measuring Error Calibration of Industrial CT. Acta Metrologica Sinica, 2015, 36(3): 225-228.
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2015, Vol. 36 
