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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