How to model a face cam (or) drum cam? pl's post a step by step tutorial

Try this. Request : Drum cam .
Steps are here.

  1. Step 1:

    1. Draw 150mm dia circle on top plane.

  2. Step 2:

    2. Extrude it to 100mm.

  3. Step 3:

    3. Create a reference plane, tangent to the cylinder surface and parallel to the front plane.

  4. Step 4:

    4. Start a sketch on the new plane. Draw a horizontal construction line with a length of "100Xpi".

  5. Step 5:

    5.Draw the sketch shown, using Lines and Tangent arcs.