From CAM Design Handbook
Jorge Angeles, Ph.D.
Dept. of Mech. Eng. McGill University CANADA
Carlos S. L pez-Caj n, Ph.D.
Depto. de Ing Mec nica Universidad A. de Quer taro MEXICO
J. Jes s Cervantes-S nchez, Ph.D.
Depto. de Ing. Mec nica Universidad de Guanajuato MEXICO
a = radius of camshaft
a i = scalar component of w i
A = cam area
A i = component of w i
A G = cubic spline matrices
A xi D yi = cubic spline coefficients at the ith point P i
b i = vector component of w i
c = radius of balancing hole
c = fixed component of follower displacement
c = centroid vector
c 1 = x component of centroid location
c 2 = y component of centroid location
c 3 = z component of centroid location
C = closed cam surface contour
d = component location along axis of rotation
e = follower offset
e = counterweight radius component
e n = unit normal vector
e t = unit tangential vector
e ? = polar circumferential unit vector
e ? = polar radial unit vector
E = 90 degree CCW rotation matrix
f = counterweight centroid location
f s = centrifugal force
F(O,x,y,z) = 3D cam coordinate frame
h ik = polynomial coefficient
h = radial difference vector
I o = cam inertia...
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Harold A. Rothbart, D. Eng. SYMBOLS A = follower acceleration, in/sec 2 F = friction force to cam surface, lb F a = inertia force, lb F k = kinetic friction force, lb F n = force normal to cam...
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Exercises 3.1 Centroid: Consider a node with unknown coordinates located in a square region of side d, with four reference nodes on the corners of the square. Consider three cases, when the reference...