MACHINING OPERATIONS AND MACHINE TOOLS
MACHINING OPERATIONS
AND MACHINE TOOLS
1. Turning and Related Operations
2. Drilling and Related Operations
3. Milling
4. Machining & Turning Centers
5. Other Machining Operations
6. Shape, Tolerance and Surface Finish
7. Machinability
8. Selection of Cutting Conditions
9. Product Design Consideration
1
1. Turning & Related Operations
? Turning ¨C a machining
v
Rotational Speed: N =
process in which a
¦ÐDo
single-point tool remove
Do ? D f = 2d
material from the
Feed rate: f r = Nf
surface of a rotating
L
work piece. (Lathe)
Time of machining: Tm =
Material Removal Rate:
Do
v
Df
fr
MRR = vfd
d
L
f
2
Operations related to Turning
Contour turning
Facing
Taper turning
Cutoff
Threading
Chamfering
Form turning
Boring
Drilling
Knurling
3
Work Holding
? Mounting between
two centers (Dog &
Live center)
? Chuck
? Collet
? Face plate
4
Engine Lathe
Headstock
Tailstock
Tool
post
Carriage
Bed
Threaded
Lead Screw
5
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