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Measurement Definition
Drive Setup/Control
Figure 5-58
Relationship of each parameter in solving skew angle
Assuming that pivot to center (PC), pivot to gap (PG) and the radius (r) are known
parameters, by applying the Law of Cosine in solving triangles we will be able to establish
the following equations.
Equation 5-29
Using the Law of Cosine
From the given illustration we can see that radius r is perpendicular to tanget line a-b.Thus,
solving for skew angle we can subtract angle A from the right angle.
Equation 5-30
By substituting equation 4-16 to 4-17 we can prove equation 4-18.
Equation 5-31
312
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2
2
2
PC
=
PG
+
r
Ð
skew
=
90
(
r
--------------------------------------------
skew
=
90
Ð
acos
×
2rPG
cos
A
Ð
A
)
2
2
2
+
PG
Ð
PC
(
)
2rPG
Chapter 5
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