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THEORY OF MACHINES AND MECHANISMS

John J. Uicker, Jr. / Gordon R. Pennock Copyright © 2011 by Oxford University Press, Inc.Joseph E. Shigley

C H A P T E R 6

Cam Design



Figure 6.1 Types of cams: (a) plate cam, (b) wedge cam, (c) barrel cam, and (d) face cam.



Figure 6.2 Plate cams with (a) an offset reciprocating knife-edge follower, (b) a reciprocating flatfacefollower, (c) an oscillating roller follower, and (d) an oscillating curved-shoe follower.



Figure 6.3 (a) Constant-breadth cam with a reciprocating flat-face follower. (b) Conjugate camswith an oscillating roller follower.



Figure 6.4 Displacement diagram for a cam.



Figure 6.5 Parabolic motion displacement diagram: (a) interfaces with uniform motion and (b) graphical construction.



Figure 6.6 Simple harmonic motion displacement diagram; graphical construction.



Figure 6.7 Cycloidal motion displacement diagram; graphical construction.



Figure 6.8 Cam nomenclature. The cam surface is developed by holding the cam stationary and rotating the follower fromstation 0 through stations 1, 2, 3, etc.



Figure 6.9 Graphical layout of a plate cam profile with an offset reciprocating roller follower.



Figure 6.10 Graphical layout of a plate cam profile with a reciprocating flat-face follower.

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