Mechanical (AQA GCSE Design and Technology): Flashcards
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Practise the cards
13 cards from this deck
Mechanical stock forms definition
Mechanical stock forms definition
Standardised components & systems used in engineering
Purpose of mechanical stock forms
Purpose of mechanical stock forms
Save time & reduce manufacturing costs
Function of chain & sprocket systems
Function of chain & sprocket systems
Transmit rotary motion between two points
Key advantage of chain/sprocket vs belt systems
Key advantage of chain/sprocket vs belt systems
Superior strength, no slip, maintain rotation direction
Single pulley mechanical advantage
Single pulley mechanical advantage
1:1 - only changes direction, doesn't reduce effort
Mechanical advantage (MA) meaning
Mechanical advantage (MA) meaning
How much a system multiplies your input force
How to calculate MA in pulley systems
How to calculate MA in pulley systems
Count number of ropes directly supporting the load
Two-pulley system mechanical advantage
Two-pulley system mechanical advantage
2:1 - force required is 1/2 of load weight
Four-pulley system mechanical advantage
Four-pulley system mechanical advantage
4:1 - force required is 1/4 of load weight
Nyloc nuts special feature
Nyloc nuts special feature
Polymer insert prevents loosening from vibration
Main function of washers
Main function of washers
Spread loads across surfaces & protect materials
Plain & bush bearings application
Plain & bush bearings application
Lower-speed applications, reduce friction & wear
Ball & roller bearings application
Ball & roller bearings application
High-speed, high-load applications like car wheels