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research-article

Hierarchical Fuzzy Primitive Surface Classification from Tessellated Solids for Defining Part-to-Part Removal Directions

[+] Author and Article Information
Nima Rafibakhsh

Oregon State University Corvallis, OR, USA
rafibakn@oregonstate.edu

Matthew I. Campbell

Oregon State University Corvallis, OR, USA
matt.campbell@oregonstate.edu

1Corresponding author.

ASME doi:10.1115/1.4038144 History: Received January 31, 2017; Revised September 19, 2017

Abstract

This paper is arranged in three sections: the first section is a hierarchical method based on clustering and a fuzzy membership system where the tessellated 3D models are classified into their containing primitives: cylinder, cone, sphere and flat. In the second section, Automated Assembly Planning (AAP) is considered as the main application of our novel hierarchical primitive classification approach. The classified primitives obtained from the first section are used to define the removal directions between mating parts in an assembly model. Finally a fuzzification method is used to express the uncertainty of the detected connections between every pair of parts. The acquired uncertainties are used in a user interaction process to approve, deny or modify the connections with higher uncertainties.

Copyright (c) 2017 by ASME
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