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EML 6267 Assignment #6 Spring 2009
Please remember to put your name on your assignment.
Due: Monday, 3/23/09
1.
(20 pts.) Complete problem 5 from chapter 4 of the text. List the
K
t
and
K
n
values for
the Fourier approach. Please use plot limits of zero to 25000 rpm and zero to 6 mm.
2.
(20 pts.) Complete problem 6 from chapter 4 of the text.
3.
(60 pts.) The textbook provides the derivation for the six cutting force coefficients
k
t
,
k
te
,
k
n
,
k
ne
,
k
a
, and
k
ae
when the radial depth of cut is equal to the tool diameter
(slotting). Determine expressions for the four coefficients
k
t
,
k
te
,
k
n
, and
k
ne
for
arbitrary radial depths of cut (i.e., arbitrary start and exit angles). Perform the
following steps:
a)
(10 pts.) Expressions for the mean
x
and
y
direction forces as a function of
φ
s
,
e
,
N
t
,
b
,
f
t
, and the force model coefficients are provided in Eqs. 4.7.15 and 4.7.16.
Organize these equations in slopeintercept form (similar to Eqs. 4.7.18 and 4.7.19).
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 Spring '08
 Schmitz

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