Construction of radial plate cams to give uniform velocity to flat follower

consthree.gif (8596 bytes)

 

Step one: Draw two circles with the following radii: the minimum cam radius and the maximum follower displacement.
Step two: Divide these circles in 30° divisions.
Step three: Construct the displacement diagram as shown.  Note that the displacement diagram is aligned with the intersection between the minimum cam radius circle and the flat follower.
Step four: Index the 30° divisions.
Step five: From the displacement diagram project the displacement of the follower at 30° to intersect the 30° division.  Then from the displacement diagram project the displacement of the follower at 60° to intersect the 60° division.
Step six: Project all the other displacements from the displacement diagram onto the corresponding divisions.  Draw the follower in each of these postions.
Step seven: Draw the best curve to touch the follower in each of these positions.

 

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