A mechanism made by connecting rigid parts. They can change the magnitude of a force, change the direction of a force or transform it into a totally different motion.
push/pull
A linkage that maintains in the direction of the input motion so that the output travels in the same direction
Bell crank
Changes the direction of the input motion through 90 degrees
why is bell crank used
Used to change horizontal motion to vertical motion or vice versa
Why are rotary systems used
To drive mechanisms and machinery
What do rotary systems do
Transfer the direction of force along different parts and through changes the angle and direction
Why is a cam used
To change rotary motion into reciprocating motion through the use of a follower
Why is a crank used
To rotate a shaft, which rotates the follower up and down
Circular cam or eccentric cam
Steady rise and fall
Pear cam
Rapid rise and fall followed by long dwell (rest)
Snail cam
long dwell followed by steady rise and sudden drop
