CAM Design Handbook
Emphasizing computer-aided design and manufacturing techniques, as well as sophisticated numerical control methods, this book allows engineers and technicians to utilize cutting edge design tools.
TABLE OF CONTENTS CAM Design Handbook
Chapter 6: ELEMENTS OF CAM PROFILE GEOMETRY
Harold A. Rothbart, D.Eng.
SYMBOLS
A = follower overhang, in
B = follower bearing length, in
d h = hub diameter, in
d s = shaft diameter, in
F = force normal to cam profile, lb
l = distance from force F n to follower axis, in
L o = external load on follower
N 1 N 2 = forces normal to follower stem, lb
Q o Q b = reactions at pivot point Q, in
r = radius to cutter center. in
r b = base circle radius, in
R g = cutter or grinder radius, in
R r = roller follower radius, in
s = follower rise, in (other chapters usually shown as y)
T = total torque on system, lb/in
W = radius of follower stem, in
? = pressure angle, deg
? m = maximum pressure angle, deg
? = angle for radius r, rad
? = distance from normal force F n to pivot point Q, in
? = coefficient of friction
? c = coefficient of friction between cam and flat-faced follower
? = radius of curvature, in
? c = radius of curvature of cam profile, in
? k = radius of curvature of pivot curve, in
? = cam angle for rise, s, rad
6.1 INTRODUCTION
This chapter introduces...
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