Abstract
The paper presents a new method to generate efficient milling toolpaths for five-axis sculptured surface machining in an important case when the vector field of preferred directions (VFPD) forms a star-like, radial configuration. To optimize the toolpath, a new modification of the radial toolpath aligned with the VFPD called the compact radial zigzag (CRZ) has been proposed, analyzed, and verified practically. The CRZ is combined with transfinite interpolation (TFI) to treat an irregular VFPD. The method is designed for the machining of industrial stereolithography (STL) part surfaces characterized by complex geometries and sharp extrema. A demo of the algorithm is at https://drive.google.com/open?id=1OM_z4cAOUqGu2RPAzkZOIBcEnfptdTq7.
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