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Mechanisms - Coggle Diagram
Mechanisms
Gears
compound gear train
Gear sizes determinate speed
Ratchet and pawl
Only rotates in one direction
Chain and sprocket
Rotates in same direction. strong
Rack and pinion
Rotation to linear motion
Bevel gear
Rotates through 45 degrees
Idler gear
used to fill in gaps between driver and driven gears
used to change direction of rotation
spur gear
Difference sizes
Worm and worm wheel
Very slow
High torque
Motors
Inline
cheap
Rotates for 360
Ratio 120:1
Ideal for wheels
Servo
High torque
Rotates through 180
gearbox
Set speed
Stepper
Expensive
Used in CNC
3v motor
Small
Ideal for fan
cams and followers
Converts rotation motion to linear motion
Straight line movement
Many shapes
Shape determines the movement of follower
Follower shape determines accuracy
Pulleys
Regular pulley system
Pulleys rotate in same direction
Idler pulley
Allows for tension on the pulley belt
Reverse pulley
Change direction using belt
Stepped pulley
Change speeds
Speakers
Buzzer
One sound
piezo
Ideal for single tones
Micro speaker
Plays tunes
Linkage
parallel linkage
Transfers motion from one point to another
