摘要
喷射成形是一种基于快速凝固技术的高温合金、高性能材料制备工艺,对喷射成形过程中沉积锭坯的轮廓及其形状特征进行实时、准确地检测是实现喷射成形工艺稳定性控制的关键。基于机器视觉技术研究了喷射成形锭坯轮廓在线检测方法,设计了视觉检测系统结构,对喷射成形生产环境下的锭坯轮廓图像处理算法进行了研究,提出了锭坯轮廓特征提取方法。实验和测试表明,轮廓及直径、喷射高度的检测精度可达1 mm,算法平均运行时间为0.83 s,可以长时间稳定地在线检测沉积锭坯的轮廓。
Spray forming is a preparation process of high-temperature alloy and high-performance material based on rapid solidification technology.Real-time and accurate detection of the contour and shape characteristics of deposited ingot during spray forming is the key to the stable control of spray forming process.In this paper,based on machine vision technology,the on-line detection method of jet forming ingot contour is studied,the structure of visual inspection system is designed and constructed,and the image processing algorithm of billet contour in spray forming production environment is studied.Besides,this paper proposes a new extraction method of the billet contour feature.Experiment and test rescelts show that the detection accuracy of the contour,diameter and the spray height can come to 1 mm,and the average running time of the algorithm is 0.83 s,which can be used to stably do the on-line detection of the contour of the deposited ingot for long time.
作者
梁振振
马万太
钟霖
邓晓雷
LIANG Zhenzhen;MA Wantai;ZHONG Lin;DENG Xiaolei(College of Mechanical and Electrical Engineering,Nanjing University of Astronautics&Aeronautics,Nanjing 210016,China)
出处
《机械制造与自动化》
2020年第2期199-202,共4页
Machine Building & Automation
关键词
喷射成形
锭坯轮廓
机器视觉
尺寸检测
spray forming
ingot contour
machine vision
size inspection