A reconstruction algorithm of engineering drawings of two-dimensional keyway shaft parts

To automatically reconstruct the engineering drawings of shaft parts, a complete 3D reconstruction algorithm is proposed using DXF files as input. The algorithm proposes the data analysis method based on the view centerline, which can effectively analyze the engineering drawings of shaft parts containing flat keyways and through-holes, including view separation, outer contour extraction, and keyway information extraction and classification. Experiments prove that based on this data analysis method, the 3D reconstruction algorithm can automatically reconstruct the engineering drawings of shaft parts containing flat keyways, grooves, or through-holes compared with the existing methods.