Turning is a machining process where a cutting tool removes material from a rotating workpiece, primarily generating external surfaces, while the process for internal surfaces is called boring. The document outlines the components of a lathe, including parts like the headstock, tailstock, and feed rod. Overall, it categorizes turning and boring as part of a broader family of machining processes.

1. Turning
S.Gunabalan
Associate Professor
Mechanical Engineering Department
Bharathiyar College of Engineering & Technology
Karaikal - 609 609.
e-Mail : gunabalans@yahoo.com

2. Turning

3. Turning
• Turning is a machining
process in which a
cutting tool move
against the rotating
work piece to removal
material.

4. Turning
• "turning" is reserved for
the generation of
external surfaces -
cutting action.
• Cutting action when
applied to internal
surfaces (holes) is called
"boring".

5. Turning
• "turning and boring"
categorizes the larger
family of similar
processes.

6. Parts of the Lathe

7. The Lathe

8. The Lathe
Head stock
Spindle
Feed rod
Bed
Compound rest
and slide(swivels)
Carriage
Apron
selector
Feed change
gearbox
Spindle
speed
Lead screw
Cross slide
Dead center
Tool post
Guide ways
Tailstock quill
Tailstock
Handle

9. The Lathe
Bed
Head Stock
Tail Stock
CarriageFeed/Lead Screw