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Fundamentals of Machining Processes, 2nd Edition
book

Fundamentals of Machining Processes, 2nd Edition

by Hassan Abdel-Gawad El-Hofy
August 2013
Beginner to intermediate content levelBeginner to intermediate
562 pages
16h 1m
English
CRC Press
Content preview from Fundamentals of Machining Processes, 2nd Edition
128 Fundamentals of Machining Processes
The specic cutting energy is
k
s
2
=191 N/mm
Cutting force, F
v
, is
F
v
=191 5 0.5= 477.5 N××
The machining time, for l 200 mm, l
a
= l
o
= 0
t
lll
f
m
ao
=
++
=
×
=
250
05 500
10
.
.min
Specic power consumption = 2.5/785 × 60 = 5.3 × 10
−5
kWh/mm
3
The surface roughness R
t
R
S
r
t
t
m==
××
×
=
2
8
05 05 1000
8125
25
..
.
µ
5.3 Drilling
Drilling is a method of machining by cutting used for making holes by
means of twist drills. The process involves two basic motions: the primary
rotary motion and the auxiliary linear feed motion. In the horizontal drill-
ing operation, the workpiece performs the rotary motion, while the tool
undergoes the linear ...
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Publisher Resources

ISBN: 9781466577022