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 ? a machining process in which a single-point tool remove material from the surface of a rotating
Rotational
Speed:
N
=
v
Do
Do - Df = 2d
Feed rate: fr = Nf
work piece. (Lathe)
Do
v
Time of machining: Tm =
Material Removal Rate:
L fr
MRR = vfd
Df
d
f
L 2
Operations related to Turning
Contour turning
Chamfering
Facing Taper turning
Form turning
Cutoff Threading 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
Threaded Lead Screw
Bed
5
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