Construction of radial plate cams to give uniform velocity to a roller follower |
| 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 and draw the roller follower in in the first position. |
| Step three: | Construct the displacement diagram as shown. Note that this time the displacement is aligned with the centre of the 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 roller follower in at each of these intersections |
| Step seven: | Draw the cam profile tangental to each of the different positions of the roller follower. |