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This paper presents a new curved layer volume decomposition method formulti-axis support-free printing of freeform solid parts. Given a solid modelto be printed that is represented as a tetrahedral mesh, we first establish ageodesic distance field embedded on the mesh, whose value at any vertex is thegeodesic distance to the base of the model. Next, the model is naturallydecomposed into curved layers by interpolating a number of iso-geodesicdistance surfaces (IGDSs). These IGDSs morph from bottom-up in an intrinsic andsmooth way owing to the nature of geodesics, which will be used as the curvedprinting layers that are friendly to multi-axis printing. In addition, to caterto the collision-free requirement and to improve the printing efficiency, wealso propose a printing sequence optimization algorithm for determining theprinting order of the IGDSs, which helps reduce the air-move path length. Ampleexperiments in both computer simulation and physical printing are performed,and the experimental results confirm the advantages of our method.

Geodesic Distance Field-based Curved Layer Volume Decomposition for Multi-Axis Support-free Printing