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Mechanism - Coggle Diagram

- - - - Uses: lap counters, gear reduction systems, musical tuning keys and windscreen wipers
  - - - Uses: industnal machinery, engines and motors, bicycles, motorbikes and three-wheeled vehicles
  - - - The ratio between the rotation veloaues of the wheels depends on the number of teeth on each wheel. It's expressed by this equation:
  - - - Uses: industnal machines, vehicle engines, washing machines and dulls
  - - - Uses: machine tools, robotics, vehicle gearboxes and some electnca appliances
  - - - The first wheel is called the primary drive wheeL When it moves, it turns or drives the second or output wheel, causing it to move as well
      - The first wheel is called the primary drive wheeL When it moves, it pulley I ax les turns or drives the second or output wheel, causing it to move as well
  - - - Pulleys 2 and 3 rotate at the same velocity
    - - Whe n the wheels and the gears have the same diameter or the same number of teeth, they rotate at the same velocity.
      - Whe n they' re different sizes, th» smallest rotates more quit.kly
        The ratio of the velocities of the two wheels is given by the gear ratio.
- - - - .
        
        • F is the force or effort appbed at one end of the bar.
        
        • R i s the resistance or load which acts at the other end of the bar.
        
        • d i s the distance from F to the fulcrum
        
        • r is the distance from R to the fulcrum
    - - Class 2
        
        The resistance ii between the fulcrum and the effort applied.
      - Class 3
        
        The effort apphed is between the fulcrum and the reustance.
      - Class 1
        
        The fukrum is between the effort appied and the resistance.
- - - - By traction. The spnng is stretched, in a bed frame for example.
      - By torsion. The spnng is twisted, in a clothes peg for example
      - By compression. The spnng is compressed, in a chair for example
- - - - transporting people from A to 8
      - telhng the time
      - entertaining children in the park
      - lif tmg and carrying objects
- - - - This is a set of connecting rods attached to a jointed axle. Each of the ioints of the axle acts as a crank.
        
        Uses; combustion engines and sewing machines
    - - This is basically a rotaung object that pushes a follower as it moves
        
        Uses; combustion enfpnes (it regulates the automatic opening and closing of the valves that let fuel and gases in and out), automatic systems
    - - This is composed of a crank and a rod called a connecting rod or link.
        
        Uses: internal combustion engmes, windscreen wipers and machine tools.
    - - This consists of a wheel with an off centre rotation axle that doesn't coincide with the centre of its circumference
        
        Uses: sewing machines, windscreen wipers
  - - - This consists of a bolt or threaded bar and a nut that has the same intenor diameter as the diameter of the bolt.
        
        Uses: presses, taps, car jacks, screw tops for bottles
    - - A crank is a bar attached to an axle that is used to turn it. A winch and crank handle system consists of a drum that rotates and a crank handle that allows to pull or lift obiects.
        
        Uses; roller bhnds, coffee grinders, crushing machines and cranes
    - - This uses a pinion that is a small cogwheel, mounted on a rack that is a toothed belt or bar
        
        Uses: bench dolls, corkscrews, vehicle steenng