Cuttable Ruled Surface Strips for Milling

Kasper Hornbak Steenstrup, Toke Bjerge Nørbjerg, Asbjørn Søndergaard, Jakob Andreas Bærentzen, Jens Gravesen

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This paper proposes a novel pre-processing method for industrial robotic CNC-milling. The method targets a hybrid machining process, in which the main bulk of material is removed through robotic hot or abrasive wire cutting, after which regular CNC-machining is employed for removal of the remaining material volume. Hereby, the roughing process is significantly sped up, reduc-ing overall machining time. We compare our method to the convex hull and re-move between 5% and 75% more material; on most models we obtain a 50% improvement. Our method ensures that no overcutting happens and that the result is cuttable by wire cutting.
Original languageEnglish
Title of host publicationAdvances in Architectural Geometry 2016
EditorsSigrid Adriaenssens, Fabio Gramazio, Matthias Kohler, Achim Menges, Mark Pauly
Publishervdf Hochschulverlag AG an der ETH Zürich
Publication date2016
ISBN (Print)978-3-7281-3778-4
Publication statusPublished - 2016
EventAdvances in Architectural Geometry (AAG 2016) - ETH Zurich, Zurich, Switzerland
Duration: 9 Sep 201613 Sep 2016


ConferenceAdvances in Architectural Geometry (AAG 2016)
LocationETH Zurich
Internet address


  • Piecewise-ruled surfaces
  • CAD
  • Milling
  • Free form architecture


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