Efficient surface segmentation algorithm for 3-axis machining with a ball-end cutter

Surface machining is one of the key problems in aircraft part-manufacturing. This paper presents a novel approach to solve the surface segmentation issue under 3-axis machining mode with a certain processing coordinate system, according to the workability-based ridge extracting algorithm proposed here. Firstly, basic principles such as ridge point and ridge of a surface are explained in detail. Secondly, the workability-based ridge extracting algorithm is put forward to better slice the surface. Finally, the proposed workability-based ridge extracting methodology is tested on a 3D model and its performance reveals that the method described here is effective in terms of time and feasibility. The work presented here has reached a basis for feature recognition during computer aided manufacturing process when fabricating aircraft structural parts.