Surface Finish (Leaving Cert Engineering): Flashcards
📚Flashcards
Practise the cards
13 cards from this deck
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Practise the cards
13 cards from this deck
Surface finish quality determines
Surface finish quality determines
Final appearance & functionality of machined components
Tool below centre: rake angle effect
Tool below centre: rake angle effect
Reduces rake angle
Tool below centre: clearance angle effect
Tool below centre: clearance angle effect
Increases clearance angle
Tool below centre: effect on workpiece face
Tool below centre: effect on workpiece face
Dimple or depression
Can facing operations be done with tool below centre?
Can facing operations be done with tool below centre?
No - makes facing operations impossible
Tool above centre: rake angle effect
Tool above centre: rake angle effect
Increases rake angle significantly
Tool above centre: clearance angle effect
Tool above centre: clearance angle effect
Decreases/eliminates clearance angle
Tool above centre causes
Tool above centre causes
Excessive friction & heat buildup
Larger nose radius effect on finish
Larger nose radius effect on finish
Creates smoother surface finishes
Four benefits of cutting fluids
Four benefits of cutting fluids
Cooling, lubrication, swarf removal, tool protection
Spindle location on lathe
Spindle location on lathe
In the lathe headstock
Higher spindle speed effect on finish
Higher spindle speed effect on finish
Produces better surface finishes
Slower feed rate effect on finish
Slower feed rate effect on finish
Produces better surface finishes