In order to achieve the integration of vertical rivet machine and small semi-automatic feed device

improve the efficiency and quality of riveting

a geometric parameter measurement method for rivet thin plate based on binocular vision is proposed. The image of thin plate to be riveted is extracted and segmented by using the morphological edge extraction operator and the modified Hough transform. The coordinate of target hole image is obtained by the centroid method and the feature point is matched by the position constraint method in the form of " hui" word. The three-dimensional coordinate of target hole is calculated according to the binocular principle. The experimental results show that the proposed method can accurately separate the riveted thin plate from the complex background

the matching rate is 100 %

the center coordinates can be accurately calculated. The average absolute deviation between the reconstructed coordinates and the actual coordinates of the centroid is 0. 258 7 mm

which meets the precision requirement of riveting industry.