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Design Basics

This guide provides foundational knowledge on simple design principles for creating functional structures and attachments. Learn about permanent and temporary attachment methods, including welding, screws, and adhesives. Explore strategies for supporting and enclosing designs while ensuring they can move effectively, incorporating modular solutions for versatility. Discover common materials, sealing techniques, and ways to enhance structural integrity. Ideal for beginners and anyone looking to simplify their design processes while ensuring effective functionality and aesthetic appeal.

yoshio-beasley
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Design Basics

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  1. Design Basics or how to put together simple things simply

  2. Outline • Attaching things (permanently and temporarily) • Simple structural supports and enclosures, sealing (o-rings) • Designing things that have to move (bearings, tracks, jamming issues) • Modular solutions (MK, macrobench, dexion)

  3. Permanent Attachment • Welding (later) • Brazing (later) • Rivets • Glue • Epoxy • Superglue • Solvent-based adhesives

  4. Temporary Attachment • Wood screws • Sheet metal screws • Machine screws • Set screws • Thumb screws Go to www.mcmaster.com !!!

  5. Temporary Attachment:Fastening with Screws • Wood screws • Sheet metal screws • Machine screws • Set screws • Thumb screws Go to www.mcmaster.com !!!

  6. Screws & Bolts • Terminology

  7. Attachment with Screws & Bolts • Calculate forces according to textbooks like Mechanical Engineering Design by Shigley & Mischke to find the correct size until you have a good gut feeling Examples of attachment on blackboard

  8. Screws & Bolts • How to create threads: tap and die set

  9. Supports, Enclosures, Pressure Vessels • Supports • Take load • Look nice • Enclosures • Visually clear or not • Thermal isolation • Pressure isolation

  10. Supports, Enclosures, Pressure Vessels • Supports • Take load • Look nice • Enclosures • Visually clear or not • Thermal isolation • Pressure isolation Make them SIMPLE!

  11. Supports, Enclosures, Pressure Vessels • Supports • Take load • Look nice • Enclosures • Visually clear or not • Thermal isolation • Pressure isolation Parker Seals http://www.parker.com/sg/sgcatalogs.asp

  12. Things that MOVE pergatory.mit.edu/2.007

  13. pergatory.mit.edu/2.007

  14. pergatory.mit.edu/2.007

  15. pergatory.mit.edu/2.007

  16. pergatory.mit.edu/2.007

  17. pergatory.mit.edu/2.007

  18. Linear Motion pergatory.mit.edu/2.007

  19. Linear Motion pergatory.mit.edu/2.007

  20. Linear Motion • McMaster-Carr • Order online • CALL for help!

  21. Bearings & lubrication • Rotational & Linear Motion • NEVER put aluminum on aluminum! • USE a BUSHING or BEARING pergatory.mit.edu/2.007

  22. Commercial Solutions

  23. MK Automation • easy attachment • modular • not too cheap • GREAT for enclosures, structures www.MKprofiles.com

  24. Macrobench and Microbench • NOT cheap • GREAT alingment • GREAT for optics • Different sizes available www.linos.com

  25. Dexion • Easy to use • Not very structural • Not as “pretty” as other options www.dexion.com

  26. REFERENCES • BEST DESIGN TEXTBOOK EVER! • Mechanical Engineering Design by Joseph Shigley and Charles Mischke • Design Website • pergatory.mit.edu/2.007 • Parts/Info • www.mcmaster.com • www.parker.com/SG • www.MKprofiles.com • www.linos.com • www.dexion.com

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