2020/04/28 by Tim Kuipers, Kuipers, Tim, Eugeni L. Doubrovski +6 · 2 citations
Computer Science · Engineering · #3D Shape Modeling and Analysis #Additive Manufacturing and 3D Printing Technologies #Computer Graphics and Visualization Techniques #FOS: Computer and information sciences #FOS: Electrical engineering #Graphics (cs.GR) #J.6 #Robotics (cs.RO) #Systems and Control (eess.SY) #electronic engineering #information engineering
paper · pdf · doi:10.48550/arxiv.2004.13497
openalex publication_date 2020/04/28 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
3D printing techniques such as Fused Deposition Modeling (FDM) have enabled\nthe fabrication of complex geometry quickly and cheaply. High stiffness parts\nare produced by filling the 2D polygons of consecutive layers with\ncontour-parallel extrusion toolpaths. Uniform width toolpaths consisting of\ninward offsets from the outline polygons produce over- and underfill regions in\nthe center of the shape, which are especially detrimental to the mechanical\nperformance of thin parts. In order to fill shapes with arbitrary diameter\ndensely the toolpaths require adaptive width. Existing approaches for\ngenerating toolpaths with adaptive width result in a large variation in widths,\nwhich for some hardware systems is difficult to realize accurately. In this\npaper we present a framework which supports multiple schemes to generate\ntoolpaths with adaptive width, by employing a function to decide the number of\nbeads and their widths. Furthermore, we propose a novel scheme which reduces\nextreme bead widths, while limiting the number of altered toolpaths. We\nstatistically validate the effectiveness of our framework and this novel scheme\non a data set of representative 3D models, and physically validate it by\ndeveloping a technique, called back pressure compensation, for off-the-shelf\nFDM systems to effectively realize adaptive width.\n