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MECHANISMS
3.Rotary motion mechanisms
Friction drives
Pulleys with belt
Gear mechanisms and cogwheels
Worm gear
Gear mechanisms with a chain
Gear train
Pulley trains with belt
Linear motion mechanisms
2.1 Levers: a lever is a rigid bar that is supported by a fulcrum
F is the force or effort applied at one end of the bar
R is the resistance load which acts at the other end of the bar
d is the distance from F to the fulcrum
r is the distance from R to the fulcrum
Types of levers:
MECHANISMS
USES: Transporting people from A to B
Telling the time
entertaining children in the park
lifting and carrying objects
Other mechanisms
5.2 Mechanisms
By compression
By traction
by torsion
5.3 Connecting mechanisms
Clutches
Fixed connections
Movable connections
5.4 Supports: bushings and bearings
In bushings
Bearings
5.1Mechanisims for controlling and directing motion
Band brake
Drum brake
Disc brake
4.Mechanisms that transform motion
Ffrom rotary into linear
Rack and pinion system
Nut and bold system
Winch and crank handle
4.2 From rotary into reciprocating motion
Crank-link-slider
Crankshaft
Cam
Eccentric cam
2.2 Fixed pulley
Moveable pulley
Compound pulley
