Gears Constraint

By a rewquest of Taif Shams. this tutorial deal with gears constraint

  1. Step 1: Pitch circles

    In each of gears, you must draw pitch circle. they will be used to set constraints.

    Pitch circle is an imaginary circle that intersects the teeth of a gear at the actual points where 

    the teeth mesh with another gear: the pitch circles of two enmeshed gears are tangent.

    Select pitch circles, Mate , mechanical mates, gear.

    Write the ratio between picth diameters.

    That is all.