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Mechanical Mechanisms - Coggle Diagram
Mechanical Mechanisms
Gears
Compound gear train
Gear sizes determine speed
Rack and pinion
Rotation to linear motion
Bevel gear
Rotates through 45 degrees
Rachet and pawl
Only rotates in one direction
Spur gear
Different sizes
Chain and sprocket
Rotates in the same direction
Strong
Idler gear
Used to change direction of rotation
Used to fill gaps between driver and driven gears
Worm and worm wheel
Very slow
High torque
Motors :
Servo
Rotates through 180 degrees
High Torque
Gearbox
Can set speed
Expensive
Inline
Rotates 360 degrees
Cheap
Most ideal for wheels
Ratio 120:1
Stepper
Used in CNC
Expensive
3V Motor
Ideal for fans
Small
Pulleys
Stepped pulley
Change speeds
Reverse pulley
Change direction using belt
Idler pulley
Allows for tension on pulley
Regular pulley system
Pulleys rotate in the same direction
Cams and followers
Many shapes that determine movement of followers
Straight line movement
Followers shape determines accuracy
Converts rotational motion into linear motion
Speakers
Buzzer
One sound
Piezo
Ideal for single tones
Micro speaker
Plays tunes
Linkage
Transfers one motion to another
Parallel linkage