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Design Basics

or how to put together simple

things simply

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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)

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Permanent Attachment

Welding (later)

Brazing (later)

Rivets Glue

Epoxy

Superglue Solvent-based adhesives

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Temporary Attachment

Wood screws

Sheet metal screws

Machine screws Set screws

Thumb screws

Go to www.mcmaster.com !!!

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Temporary Attachment:

Fastening with Screws

Wood screws

Sheet metal screws

Machine screws Set screws

Thumb screws

Go to www.mcmaster.com !!!

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Screws & Bolts

Terminology

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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

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Screws & Bolts

How to create threads:

tap and die set

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Supports, Enclosures,

Pressure Vessels

Supports

Take load

Look nice

Enclosures

Visually clear or not

Thermal isolation

Pressure isolation

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Supports, Enclosures,

Pressure Vessels

Supports

Take load

Look nice

Enclosures

Visually clear or not

Thermal isolation

Pressure isolation

Make them SIMPLE!

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Supports, Enclosures,

Pressure Vessels

Supports

Take load

Look nice

Enclosures

Visually clear or not

Thermal isolation

Pressure isolationhttp://www.parker.com/sg/sgcatalogs.asp

Parker Seals

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Things that MOVE

pergatory.mit.edu/2.007

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pergatory.mit.edu/2.007

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pergatory.mit.edu/2.007

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pergatory.mit.edu/2.007

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pergatory.mit.edu/2.007

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pergatory.mit.edu/2.007

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Linear Motion

pergatory.mit.edu/2.007

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Linear Motion

pergatory.mit.edu/2.007

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Linear Motion

McMaster-Carr

Order online

CALL for help!

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Bearings & lubrication

Rotational & Linear Motion

NEVER put aluminum on aluminum!

USE a BUSHING or BEARING

pergatory.mit.edu/2.007

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Commercial Solutions

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MK Automation

www.MKprofiles.com

easy attachment modular

not too cheap

GREAT for

enclosures, structures

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Macrobench and Microbench

NOT cheap

GREAT alingment

GREAT for optics Different sizes available

www.linos.com

Force sensor

100 m nozzle

Drug cylinder

Shaft coupling

Position sensor

Pressure sensor

Voice Coil actuator

Shaft couplingForce sensor

100 m nozzle

Drug cylinder

Shaft coupling

Position sensor

Pressure sensor

Voice Coil actuator

Shaft coupling

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Dexion

Easy to use

Not very structural

Not as pretty as other options

www.dexion.com

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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