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3D data export for Additive Manufacturing - improving geometric accuracy
Örebro University, School of Science and Technology. Saab Dynamics, Development, Karlskoga, Sweden.ORCID iD: 0000-0003-3298-502X
Örebro University, School of Science and Technology.ORCID iD: 0000-0003-1408-2249
Örebro University, School of Science and Technology.ORCID iD: 0000-0003-1655-0392
2016 (English)In: 26th CIRP Design Conference, Amsterdam: Elsevier, 2016, 518-523 p.Conference paper, Published paper (Refereed)
Abstract [en]

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.
Series
Procedia CIRP, ISSN 2212-8271 ; 50
Keyword [en]
Additive manufacturing, 3D printing, STL, STEP, tessellation, accuracy, roundness
National Category
Mechanical Engineering
Research subject
Mechanical Engineering
Identifiers
URN: urn:nbn:se:oru:diva-53932DOI: 10.1016/j.procir.2016.05.046ISI: 000387666600087Scopus ID: 2-s2.0-84986558119OAI: oai:DiVA.org:oru-53932DiVA: diva2:1055796
Conference
26th CIRP Design Conference, KTH Royal Institute of Technology, Stockholm, Sweden, June 15-17, 2016
Available from: 2016-12-13 Created: 2016-12-13 Last updated: 2017-10-18Bibliographically approved

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Hällgren, SebastianPejryd, LarsEkengren, Jens
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CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf