Transactions of Materials and Heat Treatment

Title：A geometric parameters measurement method based on binocular vision in shaft forging

Authors： Yang Yanzhu Sheng Jiawei

Unit： Donghua University

KeyWords： geometric parameters measurement of forging structured light brinocular vision point cloud segmentation ellipse fitting

ClassificationCode：TG316；TB22

year,vol(issue):pagenumber：2016,41(3):105-109

Abstract：

In the process of forging, the follow-up production can be guided by obtaining the dimension information in real-time. It has a great influence on improving production efficiency and resource utilization. Therefore, traditional contact measurement technology by hand is replaced by the non-contact measurement method gradually. According to the characteristics of hot shaft forging process, a measurement system in real-time for the large shaft forging was introduced based on structure light and binocular vision, and the algorithms of point cloud edge extraction, automatic segmentation, ellipse fitting and key geometric parameters extraction were introduced emphatically. At last, the feasibility and validity were tested by experiments, and the causes of errors were analyzed. The results show that one measurement can be completed in 2 minutes with the maximum measured length up to 10 meters, and diameter and length of the measurement error can be controlled within 3% and 1.5% respectively.

Funds：

中央高校基本科研业务费专项资金资助项目（232014D3-41）；2013年上海市企业自主创新专项资金资助项目（4-Z04）

杨延竹(1976-),男,博士,副教授通讯作者：盛佳伟(1990-),男,硕士研究生

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