Product Disassembly
description
Transcript of Product Disassembly
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Product Disassembly
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Product Disassembly
Disassembly or teardown of a product is a major step in the Reverse Engineering process.
It uncovers the principles behind how a product works.
It is always fun to tear apart a product, but nothing will be accomplished if data is not collected during the process.
To gather this data we will use a Product Teardown Chart.
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Product disassembly will answer the following questions:
• How do the parts interact?
• What are the good and bad features…of the product’s form?
…of the product’s function?
• What has caused the product to succeed or fail?
• Are the materials appropriate?
• What manufacturing process was used?
• What is the estimated cost of the product?
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Why do we perform disassembly?
• To analyze an existing product and determine its components and interrelationships.
• To determine strengths and weaknesses of parts.
• To understand how it works.
• To develop electronic documentation.
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Product disassembly
is a major step in the
Reverse Engineering process.
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Why does Industry Reverse Engineer?
• The original manufacturer of a product no longer produces a product or replacement parts for the product.
• Some bad features need to be “designed out.”
• To strengthen the good features of a product.
• To analyze the good and bad features of competitors’ products.
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Reasons for Reverse Engineering (Cont.)
• To create CAD models and documentation that were not available, or sufficient to support new manufacturing processes, such as Computer Numerical Control/CNC.
• To update obsolete materials or antiquated manufacturing processes.
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Sample Product Disassembly Display
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It all starts with the Inquiry Process.
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Initial Product Selection
• An item to disassemble is selected.• It could be as simple as a children's toy,
or as complex as a fishing reel.
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Gathering Data
• Carefully disassemble the product.• Measure the parts and record information
using the Product Teardown Chart shown on the next slide.
• Determine material properties.
inquiry discovery
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Suggested supplies to assist disassembly:
• Small drill• Calipers• Screwdriver set• Socket set• Wrenches• Wire cutters• Needle nose &
regular pliers• Radius gauge
• Hand saw / miter box & back saw
• Scale• Protractor• Handout – Product
Teardown Chart• Hand tool to
compress springs
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Take measurements and record data…
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• Use resources such as www.HowStuffWorks.com to help explain how the product operates.
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Visualization
• Create thumbnail sketches.
• Develop pictorial sketches which are extremely important at this stage to show how the part is assembled, and how the mechanism works.
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• Compare your theory/hypothesis of how the product functioned to its actual operation.
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Create solid models of each part for your presentation display.
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Analyze the product
• How do the parts interact?
• What are the good and bad features?
• What has caused the product to succeed or fail?
• Are the materials appropriate?
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Fully document each part…
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Fully document each part…
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Discuss and Brainstorm
• Discuss your team’s findings and brainstorm for improvements.
• Determine with your team, if more information is needed.
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Prepare to Present
• Prepare with your team to explain to the class how your product functions and justify ideas for improvement.
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Final Presentation
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Reflect on the disassembly process
• Did the disassembly process help you to understand the product and lead you to ideas for redesign to enhance its marketability?
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References
Ashby, Michael, and Johnson, Kara. (2002). Materials and Design: The Art and Science of Material Selection in Product Design. Butterworth-Heinemann
Dominick, Peter G., et al. (2000). Tools and Tactics of Design. John Wiley and Sons.
How Stuff Works. (September 24, 2005). [On-line]. Available: http://www.howstuffworks.com
Ingle, K. A. (1994). Reverse Engineering, NY: McGraw-Hill.New Product Development Solutions. Web site.
http://www.npd-solutions.com/ Otto, Kevin, and Wood, Kristin. (2000). Product Design: Techniques in
Reverse Engineering and New Product Development. Upper Saddle River, NJ: Prentice Hall.
Samuelson, P., and Scotchmer, S. (2002).The law and economics of reverse engineering. Yale Law Journal. (September 24, 2005). [On-line]. Available:http://www.yale.edu/yalelj/111/111-7ab2.html