关键词: 汽车用棒材轧制；辊缝测量；图像处理

Abstract: At present, the detection of the depth of bar rolling passes in China relies entirely on manual measurement. Different personnel may result in different results, which may lead to significant deviations in roll gap settings. To achieve the purpose of automatic measurement of hole depth mentioned above, this paper studies a method for detecting hole depth in bar racks based on standard comparative magnetic rods as specimens, parallel light source optical imaging as a means, and image processing technology, as well as related mathematical modeling and algorithms. The above method can balance the convenience and accuracy of on-site roll changing operation and production preparation, and has the characteristics of high accuracy and easy operation. On site experiments have shown that the hole depth detection method based on image processing can achieve a measurement accuracy of less than 0.2 mm and is relatively stable, which has certain practical application value for guiding actual industrial production.

Key words: Auto bar rolling; Roll gap measurement; Image processing