Center distance

The position and orientation of shaft 2 of the transmission ratio element is determined as follows:

The starting point is the position and orientation of the local coordinate system (CoSy) of shaft 1. The orientation of the coordinate system of shaft 2 is determined by the following steps:

1. CoSy rotation about the u_1 axis
2. CoSy rotation about the v_1-axis
3. CoSy rotation about (new) u_2-axis

For parallel shafts (angle of rotation about v_1 = 0°/ 180°), the position of shaft 2 is determined by the angle of rotation about the u_1 axis and the center distance.

For crossed shafts, the center distance is the shortest distance between the center axes of the shafts.