Work Holding (Leaving Cert Engineering): Flashcards
📚Flashcards
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15 cards from this deck
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Practise the cards
15 cards from this deck
What secures workpieces during turning?
What secures workpieces during turning?
Work holding methods on a lathe
How does a self-centring chuck work?
How does a self-centring chuck work?
Automatically centres workpiece as jaws close
Standard self-centring chuck jaw count
Standard self-centring chuck jaw count
Three jaws
Best application for self-centring chuck
Best application for self-centring chuck
Cylindrical components requiring concentric turning
Four jaw independent chuck: key feature?
Four jaw independent chuck: key feature?
Each jaw adjusted individually
Four jaw independent chuck main use
Four jaw independent chuck main use
Eccentric turning operations
Collet chuck main advantage
Collet chuck main advantage
Secure holding with quick release
Collet chuck limitation
Collet chuck limitation
Each diameter needs specific collet size
Where does the revolving centre sit?
Where does the revolving centre sit?
In the tailstock
Revolving centre benefit
Revolving centre benefit
Rotates with workpiece, reduces friction and vibration
Where is fixed steady attached?
Where is fixed steady attached?
Bolted to lathe's slideways
How many fingers on fixed steady?
How many fingers on fixed steady?
Three adjustable fingers
Where does travelling steady attach?
Where does travelling steady attach?
Cross slide
Tool on centre definition
Tool on centre definition
Tool tip aligns exactly with workpiece centreline
Effect of tool height too low?
Effect of tool height too low?
Tool becomes blunt and ineffective