From CAM Design Handbook

Overview

Jorge Angeles, Ph.D.

Dept. of Mech. Eng. McGill University CANADA
angeles@cim.mcgill.ca

Carlos S. L pez-Caj n, Ph.D.

Depto. de Ing Mec nica Universidad A. de Quer taro MEXICO
carlos@citlali.imt.mx

J. Jes s Cervantes-S nchez, Ph.D.

Depto. de Ing. Mec nica Universidad de Guanajuato MEXICO
jecer@salamanca.ugto.mx

SYMBOLS

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...


Products & Services
Linear Bearings
Linear bearings are used in applications where a component needs to be moved along a straight line with high accuracy.
Steady Rests and Follower Rests
Steady rests and follower rests are lathe accessories that hold a long workpiece steady during turning. Steady rests are mounted to the bed and do not move with the lathe. Follower rests attach to the saddle and move along with or follow the lathe.
Vector Network Analyzers
Vector network analyzers (VNA) measure the complex transmission and reflection characteristics of two-port devices in the frequency domain.
Cam Manufacturing Services
Cam manufacturing services fabricate cams to customer specifications and often provide design assistance.
Computer Numerical Control Software (CNC)
Computer numerical control software (CNC) is used to create tool paths for CNC machine control systems, or to turn a personal computer (PC) into a CNC controller.

Topics of Interest

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...

Harold A. Rothbart, D. Eng. SYMBOLS c e = p 0 + p i = distance between centers of rotation, in C = a constant D = effective diameter of rollers, in E = distance from cam center to circular arc center...

Cecil O. Huey, Jr., PhD Professor of Mechanical Engineering Clemson University, Clemson, South Carolina Dermin Tsay, PhD Professor, Department of Mechanical Engineering National Sun Yat Sen University...

SYMBOLS [3], [4] a radius of circular area of contact, m (in) A acceleration of the follower, m/s 2 (in/s 2) follower overhang, m (in) A c arc of pitch circle, m (in) b half the band of width of...

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...