METHOD OF SHAPING THREE-DIMENSIONALLY SHAPED ARTICLE, INCLUDING SETTING OF SHAPING ANGLE IN UNDERCUT REGION

摘要

To select a shaping angle in three-dimensional shaping capable of minimizing a support part, or of eliminating the need for the support part.SOLUTION: There is provided a method of shaping a three-dimensionally shaped article 1 via lamination, sintering based on irradiation, and cutting; comprising a process for setting a shaping angle by the following steps of a CAD/CAM system, when comprising an undercut region 2. 1. A step of setting a model of the three-dimensionally shaped article 1. 2. A step of selecting a reference undercut angle. 3. A step of rotation at each angle unit under the model. 4. A step of calculating a total value of a projection area to a horizontal direction plane in an undercut region 2' intersecting with the horizontal direction plane at an angle smaller than the reference undercut angle, out of the undercut region 2. 5. A step of selecting a rotation angle when a total area thereof is minimum or reaches a predetermined reference. 6. A step of issuing a command so as to set shaping of a support part with respect to the undercut region when the total area that is minimum in the calculation of the foregoing 5 exceeds a reference value, or any one of the total area in the calculation of the foregoing 4 exceeds the reference value.SELECTED DRAWING: Figure 1