High Precision Online Measurement Technology to Large Diameter

Abstract:

Because of the large diameter’s big volume, heavy weight, high thermal capacity and bad measurement environment, the workpiece’s diameter can only be detected in the processing locale. Though the rolling-wheel method can realize the large diameter online measurement, it can not achieve the diameter high precision measurement influenced by rolling-wheel skidding, compression deformation and temperature distribution. Focusing on the above problem, a new multi function rolling-wheel large diameter measurement system is designed. The designed system mainly researches the main error resource’s distinguish and amendment methods, such as the round grating graduator error, rolling-wheel shape error, rolling-wheel compression deformation, skidding of rolling-wheel to measured axis workpiece and its non-uniform temperature etc. The system can obtain the measured axis’s diameter and roundness real time while getting the needed information of error amendment by integrating multi opto-electronic switch, round grating, reference grating, micro-displacement sensor, temperature sensor etc. The system can realize diameter measurement extended uncertainty 5Dμm(D:1m～10m) and roundness measurement extended uncertainty 1.5Dμm.

• Periodical: Applied Mechanics and Materials (Volumes 303-306)
• Pages: 376-381
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.303-306.376
• Online since: February 2013
• Authors: Wang Biao, Xiao Fen Yu, Cong Yu Xu, Jia Wen Hu
• Keywords: Calibration, Data Fusion, Error Amendment, Large Diameter, Skidding Distinguish

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