| y |
offset |
| ß1 |
angle of output shaft
with respect to joint axis |
| ß2 |
angle of input shaft
with respect to joint axis |
| ßom |
constant velocity angle |
| x |
slip |
| ßmax |
maximum angle supported
by joint |
| B |
distance between joint
axis and cross axis |
| |
|
|
Rotation of a double universal joint in an angular configuration
causes the output shaft to rotate irregularly due to the difference between
inclination angles ß1 an ß2 (see Figure 2).
In order to reduce this irregularity , the centre of the joint is moved
by a distance y (given by Formula 5). y (offset) is such that the joint
provides constant velocity operation at a given angle, known as the constant
velocity angle (see Formula 6).
The y offset induces axial movement (slip) which reaches a maximum value
equal to x (see Figure 2) at the maximum inclination angle ßmax. |
