Page 349 - Cam Design Handbook

THB11 9/19/03 7:33 PM Page 337

CAM SYSTEM MODELING 337

TABLE 11.1 Equivalent Linear and Rotary Spring Constants

Linear system Spring constant (K = F/x)
Cantilever Beam
F
x b 3
1 Ê ˆ h
h Eb Á ˜
4 Ë ¯ L
L

Simply Supported Beam
L / 2
F b
x 3
Ê ˆ h
h 4Eb Á ˜
Ë ¯ L
L
Beam Clamped at Both Ends
L / 2 F

b
x 3
Ê ˆ h
h 16Eb Á ˜
Ë ¯ L
L

Rotary system Spring constant (K = T/Dq)
1
Circular Bar in Torsion

πGd 4
T d T 32L

L

Coil Spring in Torsion
d
T T 4
Ed
64ND
D