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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
57Mechanics of Orthogonal Cutting
It follows that
r
t
t
c
c
==
sin
cos( )
ϕ
ϕγ
The shear angle φ can be calculated from the following equation:
ϕ
γ
γ
=
tan
cos
sin
1
1
r
r
c
c
The shear angle φ depends on the chip thickness ratio r
c
and the normal rake
angle γ. The shear angle increases with increasing the ratio r
c
and the rake
angle γ. Greater shear angles are preferred because they reduce the area of
shear plane and, therefore, the cutting force.
The chip thickness ratio r
c
depends upon the workpiece material, cutting
speed V, feed rate f, and the tool rake angle γ. As the rake angle increases,
r
c
also increases. Also r
c
increases with an increase of the ...
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Publisher Resources

ISBN: 9781466577022