Page 402 - Cam Design Handbook

THB12 9/19/03 7:34 PM Page 390

390 CAM DESIGN HANDBOOK

Follower acceleration x F = 1
F = 0

F = 2

FIGURE 12.23. Acceleration response for cycloidal cam with T = 0.15, undamped, and different
degrees of driveshaft flexibility.

(
M y ˙˙ + c ( y ˙˙ - y ˙˙) + k y - y ) = 0
5
I
4
f 1
f
5
5
4
1
(
M y ˙˙ - c ( y ˙ - y ˙ ) + c y ˙ + k ( y - y ) - k y - y ) = 0
f 4 f 1 5 4 f 4 vc 4 3 f 5 4
2
1
M y ˙˙ + c y ˙ + k ( y - y ) - k ( y - y ) + F + k y = 0
F
fc 3 f 3 rb 3 2 vc 4 3 p rs 3
2
˙˙
M y - k ( y - y ) - F cosa = 0
r 2 rb 3 2 n
˙
˙˙
M y + c y + k y + F cosa = 0 (12.28)
vs 1
n
c 1
vs 1
along the x-axis
M x ˙˙ - k ( x - )+ k x = 0
x
fc 3 rb 2 3 hc 3
x
M x ˙˙ + k ( x - )+ F sina = 0 (12.29)
r 2 rb 2 3 n
M x ˙˙ + c x ˙˙ + k x - F sina = . 0
c 1 hs 1 hs 1 n
For torsional movement of the drive shaft (see Fig. 12.26)