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Mechanical Mechanisms 947760E5-2F47-4341-9BAE-79883D855F21 - Coggle…
Mechanical Mechanisms
Pulleys
Reverse pulley
Change direction using the belt
Regular pulley system
Pulleys rotate in the same direction
Stepped pulley
Change speeds
Idler pulley
Allows for tension on pulley belt
Linkage
Transfers motion from one point to another
Parrallel linkage
Motors
Gearbox
Set speed
Servo
Rotates through 180
High
Stepper
Used in cnc
Expensive
Inline
Cheap
Rotates 360 degrees
Ratio 120:1
Ideal for wheels
3v motor
Small
Ideal for fan
Cams and Followers
Converts rotational motion to linear motion
Straight line movement
Followe’re shape determines accuracy
Many shapes
Shape determines movement of follower
Gears
Ratchet and pawl
Only rotates in one direction
Rack and pinion
Rotation to linear motion
Compound gear train
Gear sizes determine speed
Bevel gear
Rotates through 45 degrees
Idler gear
Used to change direction of rotation
Used to fill in gaps between driver and driven gear
Spur gear
Difference sizes
Worm and worm wheel
Very slow
High torque
Chain and sprocket
Rotates in the same direction
Strong
Speakers
Buzzer
One sound
Piezo
Ideal for single tones
Micro speakers
Play tunes
Changes in direction and rotation
We can use various systems to change the direction of rotation or the axis of rotation in a belt.
