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MECHANISMS (ROTARY MOTION MECHANISMS (friction drives, pulleys with belt,…
MECHANISMS
ROTARY MOTION MECHANISMS
friction drives
pulleys with belt
gear mechanisms and cogwheels
worm gear
gear mechanisms with a chain
gear train
pulley trains with belts
MECHANISMS
CLASSIFICATION OF MECHANISM TRANSMITTING MOTION
LINEAL
ROTARY
TRANSFORMING MOTION
rotary to lineal
rotaring to reciprocaing
storing elements
controlling and regulating motion
joining elements
the driving force can be spring, an electric motor or our own muscles
OTHER MECHANISM
mechanisms for controlling and directing motion
mechanisms that store energy
connecting mechanisms
MECHANISMS THAT TRANSFORM MOTION
from rotary intu linear
from rotary into reciprocating motion
LINEAR MOTION MECHANISMS
mechanisms that transmitmotion and force in a straight line from one point to another
levers
F is the force or effort appbed at one end of the ba
R is the resistence or load which acts at the other end of the bar
is the distance from f to the fulcrum
r is the distance from R to the fulcrum
there are three types of levers, class 1, class 2 and class 3
A lever is a rigid bar that is supported by a fulcrum
pulleys
mobile pulleys
compound pulleys
fixed pulleys