Measurement and control technology of the size for large hot forgings
Measurement and control technology of the size for large hot forgings
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DOI：
10.1016/j.measurement.2013.11.028
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发表时间：
2014-03
期刊：
影响因子：
5.6
通讯作者：
Yu-cun Zhang;Jun-xia Han;Xian-bin Fu;Fu-li Zhang
中科院分区：
文献类型：
--
作者：
Yu-cun Zhang;Jun-xia Han;Xian-bin Fu;Fu-li Zhang
针对大型热锻件的不同特点和测量要求，提出了尺寸测量与控制方法。针对不规则锻件，首先构建了基于线激光扫描的测量模型，然后提出了基于棋盘基准面的光心运动轨迹的求解方法。根据不同帧中参考平面上的特征点坐标求解运动轨迹。通过测量模型与光心运动轨迹相结合，最终得到整体三维尺寸。另外，对于常规锻件，在CCD获得的图像引导下，根据线激光沿导轨的位移即可得到二维尺寸。而且，锻件的尺寸控制可以通过轧制压下量控制和工作位置定位来实现。实验结果表明，所提出的测量方法是可行的。
Aiming at the different characteristics and measurement requirements of large hot forgings, a size measurement and control method is proposed. For irregular forgings, a measurement model based on line laser scanning is first constructed and then a solution of the optical center motion trail on the basis of the chessboard reference plane is proposed. The motion trail is solved according to the feature point coordinates on the reference plane in different frames. The overall three-dimensional size is finally achieved by combining the measurement model with the optical center motion trail. In addition, for regular forgings, under the guidance of images obtained by CCD, the two-dimensional size can be achieved according to the displacement of the line laser along the rail. Moreover, the size control of the forgings can be realized by rolling reduction control and the working position location. The measuring method proposed is feasible according to the experimental results.