基于SGBM算法的可转位刀片几何参数测量

Geometric Parameter Measurement of Indexable Insert Based on SGBM Algorithm

分析现有的可转位刀片三维立体几何参数刀片厚度的测量方法,传统测量方法在测量可转位刀片三维立体几何参数刀片厚度的精度相对较低,搭建了基于双目视觉的可转位刀片立体几何参数厚度测量系统。在本刀片测量系统实验中对相机进行标定求取其内外参数,对图像进行立体校正和立体匹配得到视差图,将基于Roberts算法的改进SGBM算法应用于立体匹配,利用视差图中的距离信息测出可转位刀片厚度。实验结果表明,本测量系统和基于Roberts算法的改进SGBM算法可以实现可转位刀片厚度的精密测量。

Based on the analysis of the existing measurement methods for the 3D geometric parameters of indexable insert thickness,aiming at the relatively low accuracy of the traditional measurement methods in 3D geometric parameters of indexable insert thickness measuring,a measurement system for the 3D geometric parameters of indexable insert thickness based on binocular vision is established.In the experiment of the blade measuring system,the camera calibration is carried out to get the internal and external parameters of the camera.Then the stereo correction and stereo matching are carried out to obtain the disparity map.The improved SGBM algorithm based on Roberts algorithm is applied to stereo matching.The distance information in disparity map is used to measure the thickness of indexable insert.The experiment shows that the measurement system and the improved SCBM algorithm based on Roberts algorithm can realize the precision measurement of indexable insert thickness.