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Non-Permanent Fasteners

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 All Shapes and Sizes

139 lb. bolt (one of 16) used for a

75,000kw generator 

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The Following Web Sites Offer Information

on Several Different Types of Fasteners:

www.nmri.go.jp/eng (Manufacturing Info.)

Brief tutorial on fabrication of fasteners

www.boltscience.com (General Info.)

Click on ³Bolting Info.´ (guide for theor y behind pre-load, etc.)

www.boltdepot.com (General Info.)

Use list of links to navigate site

www.mcmaster .com (Commercial Catalog)

Search for ³bolts´, choose type

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Permanent Fasteners

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Good Weld-

Uniform weld pools, even material 

bonding; this will allow weld material to

achieve maximum strength

Bad Weld-

Patchy weld pools, uneven bonding;

weld material strength iscompromised

Welding

The welder is  just as important, if not more, than the weld material

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Types of Welding

ManualMetal Arc Welding

Metal Inert Gas (MIG)

Electrical arc is formed between electrode and work

piece to produce heatTungsten Inert Gas (TIG)

Similar to MIG, typically more precise

Oxyacetylene (Gas) Welding

Uses chemical reaction to intensif y heat

For a catalog of welding rods and accessories visit:

www.mcmaster .com search for ³welding rod´

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Mechanical Springs

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Types of Springs

Compression

Tension

Torsion

Leaf Springs

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The Following Web Sites Offer Information

on Several Different Types of Springs:

www.efunda.com (General Information)

Use left toolbar for spring theor y and calculators

www.mcmaster .com (Commercial Catalog)

Search for ³spring´ and select desired type

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Rolling Contact Bearings

andJournal Bearings

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The Following Web Sites Offer Information

on Several Different Types of Springs:

howstuffworks.com (General Information)Navigate through the tutorial by clicking ³Next´

Roller Bearing Info

Journal Bearing Info

Maximum RPM Calculator 

mcmaster .com (Commercial Catalog)

Search for ³bearings´ and select desired type

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Gears

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Types of gears

Spiral Bevel GearsCrossed Helical Gears

Worm Gear 

Spur GearsBevel Gears

Helical Gears

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Basic Gear Terminology

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Involute Curve

The involute curve would be the result of tracing the path a string being

unwound from a circle.  This shape allows for proper meshing of gear teeth.

Click here to see the involute curve in motion. 

Making Gears Perform-Gear Teeth

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 Animation of Planetar y Gear set

Layout of Planetar y Gear set

Second Animation

Lexus Hybrid Planetar y Gear Set

Commercial catalog

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Clutches and Brakes

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Common Types of Brakes(Click on type for more information)

Disc Brake Drum Brake

Online Brakes Catalog

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Visit howstuffworks.com for an introduction to automobile clutches.

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Flexible Mechanical 

Components

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Introduction to Belts

 Applications of Belts and Chains:

Continuously Variable

Transmission (CVT)

Drill Press

Chain Driven CVT

V-belt Calculations

Creating "Gears" Using Belts

Commercial Catalog

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Shafts and Axles

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Drive Shaft

 Axle Shafts

Cam Shaft

Critical Speed Calculator 

Gear Shaft

Shaft Applications

Camshaft Tutorial

Commercial Catalog