Mechanical TroubleShooting
Alignment
Lubrication
Power transmission system
Mechanical components
100
What is a sign of that is a mechanical component is damaged
cracks
fractures
knicks
lamination
rust
shear
100
What some of the consequences of misalignment of a shaft
excessive wear
missed timing
uneven wear
uneven loading
Objects landing in the wrong position
100
What is the purpose of lubrication
Absorb Shock
Reduce wear
Prevent Contamination and corrosion
Reduce Friction
Dissipate heat
100
What is the purpose of a power transmission system
To transmit speed power and direction from driver to driven system components
100
What is the purpose of a key
to join together a shaft and coupling and restrict movement between the mating components
200
When troubleshooting a mechanical system you see the belt driving into the side of the conveyor what could be the cause of this
misalignment
200
What are some of the methods of tensioning a belt
Belt tensioner
Take up roller
slotted holes
200
Does a sealed bearing need lubrication
no
200
Name 4 types of power transmission systems
Gear drive
Chain Drive
Belt Drive
Direct Shaft to Shaft coupling
200
What is the purpose of a bearing
to restrict axial and lateral movement while facilitating rotary motion
300
When troubleshooting a mechanical sytem what are you looking for
rust
dull teeth if your sytem has sprocket
damage to the belt fraying rips tears
squeeking or grinding noise
heat damage
missing bolts or fasteners
300
Why do we want our belt to be properly tensioned
to properly transmit speed and force from our driver to driven components whithout slippage or overloading
300
What are signs that a component needs lubrication
excessive wear
heat
squeeking or grinding noise
300
Why use a chain drive over a belt drive
Chain drives are used for heavier loads
300
Name a sign of a worn bearing
rough rotation
black oil
burnt smell
griunding noise
400
What is corrosion
Corrossion is mechanical wear caused through chemical reactions
400
What is another name for axial misalignment of a motor shaft
end float
400
What is the difference between oil and grease
oil is solid grease is semisolid usually made of animal fat
400
what is torque
Torque is rotational force
400
Name 4 types of couplings
rigid couplings
flexible jaw couplings
flexible couplings
universal coupling
500
Looking at this stress strain part what is your yield point? What is ultimate tensile strength?
yield point is the point where we switch from the elastic phase to the plastic phase where we experience permanent deformation and the ultimate tensile strength is how much force our material can take before it breaks
500
What is another name for radial misalignment of a motor shaft
run-out
500
What is viscosity
Viscosity is a measure of a fluids ability to resist flow something like honey would have a high viscosity, while something like water would have a low viscosity
500
Lets say we have an driver rpm of 1800 and a driven rpm of 1250 what is our pulley ratio
1800/1250 = 1.44
500
Name 3 types of belts
flat belt
ribbed belt
wedge belt