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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
118 Fundamentals of Machining Processes
5.2.4 Cutting Forces, Power, and Removal Rate
The main (tangential) cutting force F
v
(Newton) in the direction of the cutting
speed V can be calculated from
FkA
vs
c
=
where k
s
is the specic cutting energy in N/mm
2
. Therefore, the cutting
power N
c
in kW becomes
N
FV
c
v
=
×60 10
3
The motor power N
m
required is given in kW by
N
FV
m
v
m
=
×
60 10
3
η
where η
m
is the mechanical efciency of the machine tool used in the cut-
ting operation. The rate of material removal (VRR) in mm
3
/min is also
given by
VRR
=
10
3
VSt
or
VRR
av
dStN
where d
av
is given in mm by
d
dd
av
f
=
+
2
In turning, three components of force are shown in Figure 5.6
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Publisher Resources

ISBN: 9781466577022