Design Basics or how to put together simple things simply.

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Design Basics or how to put together simple things simply

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Transcript of Design Basics or how to put together simple things simply.

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

Design Basics

or how to put together simple things simply

Page 2: Design Basics or how to put together simple things simply.

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)

Page 3: Design Basics or how to put together simple things simply.

Permanent Attachment

• Welding (later)

• Brazing (later)

• Rivets

• Glue– Epoxy– Superglue– Solvent-based adhesives

Page 4: Design Basics or how to put together simple things simply.

Temporary Attachment

• Wood screws

• Sheet metal screws

• Machine screws

• Set screws

• Thumb screws

Go to www.mcmaster.com !!!

Page 5: Design Basics or how to put together simple things simply.

Temporary Attachment:Fastening with Screws

• Wood screws

• Sheet metal screws

• Machine screws

• Set screws

• Thumb screws

Go to www.mcmaster.com !!!

Page 6: Design Basics or how to put together simple things simply.

Screws & Bolts

• Terminology

Page 7: Design Basics or how to put together simple things simply.

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

Page 8: Design Basics or how to put together simple things simply.

Screws & Bolts

• How to create threads: tap and die set

Page 9: Design Basics or how to put together simple things simply.

Supports, Enclosures, Pressure Vessels

• Supports – Take load– Look nice

• Enclosures– Visually clear or not– Thermal isolation– Pressure isolation

Page 10: Design Basics or how to put together simple things simply.

Supports, Enclosures, Pressure Vessels

• Supports – Take load– Look nice

• Enclosures– Visually clear or not– Thermal isolation– Pressure isolation

Make them SIMPLE!

Page 11: Design Basics or how to put together simple things simply.

Supports, Enclosures, Pressure Vessels

• Supports – Take load– Look nice

• Enclosures– Visually clear or not– Thermal isolation– Pressure isolation

http://www.parker.com/sg/sgcatalogs.asp

Parker Seals

Page 12: Design Basics or how to put together simple things simply.

Things that MOVE

pergatory.mit.edu/2.007

Page 13: Design Basics or how to put together simple things simply.

pergatory.mit.edu/2.007

Page 14: Design Basics or how to put together simple things simply.

pergatory.mit.edu/2.007

Page 15: Design Basics or how to put together simple things simply.

pergatory.mit.edu/2.007

Page 16: Design Basics or how to put together simple things simply.

pergatory.mit.edu/2.007

Page 17: Design Basics or how to put together simple things simply.

pergatory.mit.edu/2.007

Page 18: Design Basics or how to put together simple things simply.

Linear Motion

pergatory.mit.edu/2.007

Page 19: Design Basics or how to put together simple things simply.

Linear Motion

pergatory.mit.edu/2.007

Page 20: Design Basics or how to put together simple things simply.

Linear Motion

• McMaster-Carr– Order online– CALL for help!

Page 21: Design Basics or how to put together simple things simply.

Bearings & lubrication

• Rotational & Linear Motion– NEVER put aluminum on aluminum!– USE a BUSHING or BEARING

pergatory.mit.edu/2.007

Page 22: Design Basics or how to put together simple things simply.

Commercial Solutions

Page 23: Design Basics or how to put together simple things simply.

MK Automation

www.MKprofiles.com

• easy attachment• modular• not too cheap• GREAT for enclosures, structures

Page 24: Design Basics or how to put together simple things simply.

Macrobench and Microbench

• NOT cheap

• GREAT alingment

• GREAT for optics

• Different sizes available

www.linos.com

Force sensor

100 μm nozzleDrug cylinder

Shaft coupling

Position sensor

Pressure sensor

Voice Coil actuator

Shaft couplingForce sensor

100 μm nozzleDrug cylinder

Shaft coupling

Position sensor

Pressure sensor

Voice Coil actuator

Shaft coupling

Page 25: Design Basics or how to put together simple things simply.

Dexion

• Easy to use

• Not very structural

• Not as “pretty” as other options

www.dexion.com

Page 26: Design Basics or how to put together simple things simply.

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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