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A design support system to determine the machine eligibility for manufacturing frame assemblies

  • Author / Creator
    An, Shi
  • As offsite construction is trending, an increasing number of construction products are fabricated in a controlled factory environment. By using automated machinery, the productivity and accuracy of construction-oriented products have been improved. However, as BIM models do not provide manufacturing information, the planning of manufacturing processes for construction-oriented products are manual, time consuming, and relying heavily on the knowledge of manufacturing engineers. To achieve automated process planning, the planning system must be able to decide machine capabilities given the BIM models, specifications of machinery, and manufacturing rules defined by domain experts. This research develops a decision-support system that automatically determines a machine’s eligibility of manufacturing the light frame assemblies using the given specifications. First, common manufacturing features of frame assemblies and manufacturing rules are formulated using ontologies. Second, the geometries of the manufacturing features are determined using techniques of computational geometry. Furthermore, manufacturing locations are determined using previously formulated manufacturing rules. Lastly, whether or not a frame defined by the BIM is manufacturable using a given machine is determined by checking if the manufacturing features are within the effective range of the machine. The developed system is tested on wood and steel frame assemblies using semi-automated framing machines. It is proven that the system accurately determines manufacturing features and the machine eligibility.

  • Subjects / Keywords
  • Graduation date
    Fall 2019
  • Type of Item
    Thesis
  • Degree
    Master of Science
  • DOI
    https://doi.org/10.7939/r3-xpgk-7w10
  • License
    Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only. Where the thesis is converted to, or otherwise made available in digital form, the University of Alberta will advise potential users of the thesis of these terms. The author reserves all other publication and other rights in association with the copyright in the thesis and, except as herein before provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the author's prior written permission.