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Design Methodology for Assembly and Disassembly Based on Rating Factors

[+] Author Affiliations
Devdas Shetty, Vishwesh Coimbatore, Claudio Campana

University of Hartford

Paper No. IMECE2005-81450, pp. 575-581; 7 pages
  • ASME 2005 International Mechanical Engineering Congress and Exposition
  • Manufacturing Engineering and Materials Handling, Parts A and B
  • Orlando, Florida, USA, November 5 – 11, 2005
  • Conference Sponsors: Manufacturing Engineering Division and Materials Handling Division
  • ISBN: 0-7918-4223-1 | eISBN: 0-7918-3769-6
  • Copyright © 2005 by ASME


Design engineers need an automated tool to effectively analyze the ease of assembly & disassembly of the subassemblies and the innovative products they create. A good assembly design makes it easier to service, easier to repair and maintain. Due to current environmental regulations the designers are forced to think about the life cycle of a product, recycling and reuse aspects of the products from the very beginning. This creates an environment for efficient implementation of design for manufacturing tools and techniques. A New Design for Assembly / Disassembly (DFA/DFD) Evaluation methodology explained here enables the designer to review the design for assembly and disassembly difficulties by considering several contributing factors and their importance to successful product creation. The technique is based on the criteria of “Rating Factors”. A spreadsheet format is used to create the front end interface for the user and to include all the influencing factors. The major parameters considered for the study are access, tool, task, re-use, removal, recyclability. Since the product maintenance is an important factor additional maintenance related issues such as spare parts, waiting time, priority and cost are considered as rating factors. The new methodology was compared with other existing techniques and found to be valid and useful to manufacturing industries.

Copyright © 2005 by ASME



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