Page 173 - Cam Design Handbook

THB6 8/15/03 2:40 PM Page 161

ELEMENTS OF CAM PROFILE GEOMETRY 161

Dwell
Follower arc or angle

4
2
1
3
0
0 30 60 90 120 deg. Dwell
Cam angle q
(a) Timing chart.

B 4
Base circle
3
1 2
2 Prime circle
1
O
1¢
3

A

Cam profile
2¢ 4

3¢

4¢
(b) Cam layout.
FIGURE 6.1 Cam with oscillating follower.