2019/09/19 by Erva Ulu, Ulu, Erva, Nurcan Geçer Ulu +5
Engineering · Earth and Planetary Sciences · #3D Shape Modeling and Analysis #Manufacturing Process and Optimization #3D Surveying and Cultural Heritage
paper · pdf · doi:10.48550/arxiv.1909.11620
We introduce a method to analyze and modify a shape to make it manufacturable\nfor a given additive manufacturing (AM) process. Different AM technologies,\nprocess parameters or materials introduce geometric constraints on what is\nmanufacturable or not. Given an input 3D model and minimum printable feature\nsize dictated by the manufacturing process characteristics and parameters, our\nalgorithm generates a corrected geometry that is printable with the intended AM\nprocess. A key issue in model correction for manufacturability is the\nidentification of critical features that are affected by the printing process.\nTo address this challenge, we propose a topology aware approach to construct\nthe allowable space for a print head to traverse during the 3D printing\nprocess. Combined with our build orientation optimization algorithm, the amount\nof modifications performed on the shape is kept at minimum while providing an\naccurate approximation of the as-manufactured part. We demonstrate our method\non a variety of 3D models and validate it by 3D printing the results.\n