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Mechanisms - Coggle Diagram

- - - - This is a screw that moves a helical cogwheel which is set perpendicular to the screw.
      - Each time the screw rotates the gear moves foward as many teeth as grooves in the screw
      - This is used to reduce velocity as well as serving as a braking system
    - - They rotate simultaneosly by means of a metal chain or a toothed neoprene belt stretched over both wheels.
      - The chain transmits the rotary motion of axle 1 to axle 2 via gears 1 and 2.
      - These are two cogwheels with parallel axles that are a certain distance apart.
      - This system transmits greater forces without losing velocity because the chain is attached to the gear teeth so there is no slippage between chain and the wheel.
    - - Cogwheels ar sets of wheels that have teeth called cogs. They mesh toguether so that one wheel moves another.
    - - There are two or more pulleys
      - The rotary motion of axle 1 is transmitted to axle 2 via the stretched belt that connects them
      - Pulleys 2 and 3, attached to the same axle.
      - The motion of pulley 3 is transmitted to pulley 4 via the belt that connects them.
    - - These are two pulleys or wheels that are a certain distance apart.
      - Their axles are parallel and they rotate simultaneously because of the belt.
      - The rotation of one axle is transmitted to the other via the connected pulleys.
      - The two pulleys rotate in the same direction.
    - - When there are two wheels, each connected geared wheel rotates in the opposite direction to its partner.
    - - This is made up of two or more wheels that are in contact
        
        Wheel (1) is called the primary drive wheel. When it moves, it turns or drives the output wheel (2), causing it to move as well.
  - - - A fixed pulley is a wheel that has a. groove for a rope, chain or belt to go round it. It rotates around an axle that is fixed to an immobile surface.
    - - A moveable pulley has two pulleys, one is fixed while the other can move in a linear direction.
    - - A lever is. a rigid bar that is used with a point of support or a fulcrum
        
        Types
        
        Class 2
        
        The load is between the effort and the fulcrum
        
        Class 3
        
        The effort is between the fulcrum and the load
        
        Class 1
        
        The load and the effort are on opposite sides of the fulcrum
    - - This is a set of fixed and moveable pulleys, often called a block and tackle. If we use more pulleys it become more complex, but less effort is needed to move the load.
- - - - If the bolt rotates and the nut can't turn,the nut moves in a linear motion along the threaded axle.
      - If the nut rotates in a fixed position the bolt will move in a linear motion.
      - This consists of a bolt or threaded bar and a nut that has the same interior diameter as the diameter of the bolt
    - - The effort needed to turn the winch is less than if we tried to turn it directly.
      - The winch consists of a drum that rotates on its axle. It's used to pull or lift an object.
      - The crank is used to turn the winch)
      - If the crank handle is longer, we need less effort to lift the load.
      - This consists of a crank handle attached to the axle of a cylindrical drum (or whinch)
    - - This uses a pinon mounted on a rack. When the pinon rotates, the rack advances in a linear motion.
  - - - A crankshaft transforms the rotary motion of an axle into a reciprocating motion with different connecting rods moving at different times.
      - It can also transform the reciprocating motion of the rods into a rotary motion of the axle.
      - This is a set of connecting rods attached to a jointed axle. Each of the joints of the axle acts as a crank.
    - - A cam transforms rotary motion into reciprocating motion in the follower or bar. This is touched and moved by the edge of the cam when it rotates.
      - A set of cams fixed on the same axle is called a camshaft.
      - We can change the shape and the usable profits that are more or less pointed to produce more complex movements.
        
        slight elevations
        
        brusque falls, etc
        
        various jumps per rotation
    - - The slider outputs reciprocating motion
      - As the wheel rotates, the crank transmits the rotary motion to the connecting rod, which moves with a reciprocating motion.
      - This rod has articulated joints at each end
      - This crank-link-slider system can work in reserve, it can transform reciprocating motion or oscillating motion into rotary motion.
      - This is composed of a crank and a rock called connecting rod or link.
    - - This consists of a wheel with an off-centre rotation axle.
      - I transforms the rotary motion of the wheel into reciprocating motion in the connecting rod.
      - The distance between the centre of the circumference and the rotation axle of the cam is called eccentricity.