Method for three-dimensional shaped product with setting shaping angle in undercut region

摘要

A method for a three-dimensional shaped product produced by lamination, irradiation-based sintering and cutting, when undercut regions are present, comprising the steps of:1. setting a model for the three-dimensional shaped product;2. selecting a standard of undercut angle;3. rotating the model in angle units;4. calculating a total projected area on a horizontal plane of the undercut regions having angles crossing the horizontal plane which are smaller angles than a standard of undercut angle;5. selecting a rotation angle such that the total projected area is either smallest or a prescribed standard value is reached;6. when a minimum total area in step 5 is larger than a predetermined standard value or all of the total projected area in step 4 is larger than the predetermined standard value, sending a command to set a shaping region of a support section for supporting the undercut region.