为了使连铸坯的定尺切割工艺技术升级为定重切割, 提出了一种重量实时累加式连铸坯线结构光视觉定重方法, 并对该方法的原理、测量模型和定重过程进行了研究。根据线结构光视觉测量原理, 由视觉传感器测量并计算连铸坯当前被测横截面的面积, 同时由另一视觉传感器测量并计算当前被测横截面与前一被测横截面在连铸坯传送方向上的间距, 进而可计算出相邻两个横截面之间连铸坯段重量, 通过各相邻连铸坯段重量的累加实时监测通过测量位置的连铸坯重量, 从而实现连铸坯的定重切割控制。组建了实验系统, 以规则的矩形实心型钢为被测实验件进行了定重实验。实验结果显示该方法定重的相对误差在 1‰以内, 远远小于生产企业目前的 8‰误差精度要求。该研究为连铸坯定重切割技术的实现提供了一定的理论参考。

In order to upgrade the cut-by-length technology of billet to cut-by-weight, a real-time accumulation vision weight method of billet based on linear structured laser was proposed, and its principle, measurement model and weighing process were studied. According to the vision measurement principle of linear structure laser, the current cross section area of billet was measured and calculated by two vision sensors. Meanwhile, the distance between the current cross section and the previous one was acquired by another vision sensor, and the billet weight between two adjacent cross sections was calculated and accumulated. Thus, the billet weight passing the measuring position was monitored real-timely, and the real-time weight-cut control of billet was realized. The experimental system was set up and the weight experiment was carried out with rectangular solid steel. Experimental results show that the relative error of weight is 1‰, which is far less than 8‰ used in present production enterprises. This research provides a theoretical reference for the realization of billet cut-by-weight technology.