
241Machining by Abrasion
CF
2
g
g
=
−−
d
t
d2
11
2
2
2
CF
g
td t
2
The arc length of the chip that is not deformed, l
g
, is the length of BC which
is given by
g
2
BC CF== +
2
d
=
Figure 8.15 also shows the shape of the chip thickness, h
g
, which is given by
h
C
t
H
E
O
v
g
v
w
F
BA
E
g
g
H
B
C
H
B
F
O
FB = t
CO = OB = d
g
/2
FO = d
g
/2–t
CB = l
g
C
E
g
FIGURE 8.15
Surface grinding depth exaggerated.