3D data export for Additive Manufacturing - improving geometric accuracy
2016 (English)In: 26th CIRP Design Conference, Amsterdam: Elsevier, 2016, 518-523 p.Conference paper (Refereed)
3D data exchange between different CAD systems and from design to manufacturing has largely moved to ISO STEP based formats. The Additive Manufacturing (AM) process today requires an approximate, planar triangle tessellated 3D model as an input. Improving accuracy in STL file exports is done differently in different CAD systems. Poor tessellation accuracy results in built parts with poor geometric accuracy because of errors in source data. In this study, results of tessellation from six different CAD systems are compared. Roundness accuracy for the different settings is calculated. Results show that tessellation effects may be visible even when roundness requirements are fulfilled. A method for 3D data exchange for AM using STEP and geometric requirements is proposed until better accuracy AM formats can be used.
Place, publisher, year, edition, pages
Amsterdam: Elsevier, 2016. 518-523 p.
Procedia CIRP, ISSN 2212-8271 ; 50
Additive manufacturing, 3D printing, STL, STEP, tessellation, accuracy, roundness
Research subject Mechanical Engineering
IdentifiersURN: urn:nbn:se:oru:diva-53932DOI: 10.1016/j.procir.2016.05.046ISI: 000387666600087ScopusID: 2-s2.0-84986558119OAI: oai:DiVA.org:oru-53932DiVA: diva2:1055796
26th CIRP Design Conference, KTH Royal Institute of Technology, Stockholm, Sweden, June 15-17, 2016