An adaptive generation method of robotic grinding paths guided by CAD drawings was proposed to remove burrs on wheel hub hole side edges smoothly, addressing inconsistent raw materials, missing 3D models, and only 2D CAD drawings. First, theoretical grinding paths were quickly extracted based on point correspondences between CAD main and sectional views, and actual 2D hole contours were acquired using a 2D industrial camera. A registration model between the theoretical paths and actual contours was established, and a neighborhood-based weighted averaging method was used to restore depth information of the actual contours, generating adaptive grinding paths. Then, B-spline curve fitting was applied to smooth path points, and a spherical quadrilateral interpolation model was used to optimize tool orientations, ensuring continuous and smooth grinding in high-curvature or challenging regions. Experimental results show that the generated paths are continuous, smooth, and tool orientations remain stable. Compared with theoretical paths, path accuracy is improved by over 90%, and the average production cycle is as 88 s, meeting industrial requirements.
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