Page 453 - Cam Design Handbook

THB13 9/19/03 7:56 PM Page 441

CAM SYSTEM DYNAMICS—RESPONSE 441

FIGURE 13.21. Textile machine example.

Ê q ˆ Ê q ˆ 2 Ê q ˆ 3
y ¢¢ =-.0125 + .75 -.025 . (13.91)
Ë 60 ¯ Ë 60 ¯ Ë 60 ¯
Now let us find the system characteristics for the cam displacement from Eq. (13.83):
+
y = r + k y cy¢¢
c a r
The ramp height
S + L
r = r + 1 = 001in.
.
k
a
k
f
The spring ratio
k + k
k = s f =1016.
.
r
k
f