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mechanism - Coggle Diagram
mechanism
Cams
used in cam timers of car engines, locking devices, brake
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Snail cam
as it turns, the cam follower rises at a steady rate and drops suddenly
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Pulleys
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lift loads, transmit motion/power
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Pulley and Belt system
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Round belt
flat belt, rectangular in cross section
Advantage: simple & inexpensive, suitable for high speed, quick and easy to slide into position
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Belt sanders, conveyor belts ect.
Vee belt
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Washing machine, cement mixers ect.
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Chain and sprocket
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Bicycles, motorcycles ect.
Gears
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Bevel Gear
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by using gears of different sizes, speed of rotation and torque can also be changed
car gear boxes, food mixers,drilling machines
Worm Gear
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compact mechanism, smooth and quiet
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Springs
Compression
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retractable pens, bed mattresses, battery holders
Tension
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weighing scales, trampolies
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Cranks
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bicycle paddles, sheet metal rollers
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Fasterners
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Split Pins
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two ends are bent apart once inserted, locking it in place
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Rack and Pinion
rack is the flat, pinion is the gear
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car steering mechanism, lowering and raising mechanism
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Screw
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adjuctable spanners, glue sticks, taps, lipstick
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Types of Mechanism
First
effort(down) , fulcrum, load(down)
Second
fulcrum, load(down) , effort(up)
Third
load(down) , effort(up), fulcrom
Linkages
Reverse Motion Linkage
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top rod moves left, bottom rod moves right. The fixed pivot is the centre of rotation
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Parallel Motion Linkage
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large rod at the top moves left, the two small rods move right
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Mechanism Advantage
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if MA is greater than 1, output force is larger than input force.
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