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TECHNICAL PAPERS

Automatic Assembly Feature Recognition and Disassembly Sequence Generation

[+] Author and Article Information
Raymond C. W. Sung, Jonathan R. Corney

Department of Mechanical and Chemical Engineering, Heriot-Watt University, Edinburgh, EH14 4AS, United Kingdom

Doug E. R. Clark

Department of Mathematics, Heriot-Watt University, Edinburgh, EH14 4AS, United Kingdome-mail: derc@ma.hw.ac.uk

J. Comput. Inf. Sci. Eng 1(4), 291-299 (Oct 01, 2001) (9 pages) doi:10.1115/1.1429931 History: Received August 01, 2001; Revised October 01, 2001
Copyright © 2001 by ASME
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References

Shah,  J. J., and Rogers,  M. T., 1993, “Assembly Modelling as an Extension of Feature-Based Design,” Res. Eng. Des., 5, pp. 218–237.
Anantha,  R., Kramer,  G. A., and Crawford,  R. H., 1996, “Assembly Modelling by Geometric Constraint Satisfaction,” Computer-Aided Design, 28, No. 9, pp. 707–722.
Bronsvoort, W. F., van Holland, W., and Jansen, F. W., 1995, Feature Modelling for Assembly, Graphics and Robotics, Straszer, W. and Wahl, F. (eds), Springer-Verlag, Berlin, 1995, 131–148.
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Homen De Mello,  L. S., and Sanderson,  A. S., 1991, “A Correct and Complete Algorithm for the Generation of Mechanical Assembly Sequences,” IEEE Trans. Rob. Autom. 7, No. 2, 1991, pp. 228–240.
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Sung, R. C. W., Corney, J. R., and Clark, D. E. R. 2000, Octree Based Recognition of Assembly Features, CD-ROM Proceedings of the ASME 2000 Design Engineering Technical Conferences and Computers and Information in Engineering Conference, 10–13 September, ASME, New York.
Sung, R. C. W. 2001, “Automatic Assembly Feature Recognition and Disassembly Sequence Generation,” Ph.D. Thesis, Heriot-Watt University, Edinburgh, Scotland.
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Figures

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Unobstructed projection of fi onto fj
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(a) octants, (b) octree structure, (c) linear octree
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VRML representation of octant list
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Two sections through the assembly model
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Possible traversal paths
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Octants found adjacent to the starting face (i.e. enclosing the cylinders)
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Adjacent octants with anti-parallel orientation to the search direction
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C-adjacent and S-adjacent faces on test model
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Disassembly sequence tree
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Internal and external S-adjacent faces
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Examples of contact and spatial adjacency
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(a) B-rep model, (b) octree representation, (c) S-adjacent feature, d) C-adjacent features
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Disassembly sequences for test assembly 1
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Disassembly sequences for test assembly 2
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Disassembly sequences for test assembly 3
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High resolution octree representation of test assembly 3

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