On the Relation between the Run-Out Errors and the Motion of the Center of Sun Gear In a Stoeckicht Planetary Gear

The authors considered a single-stage Stoeckicht planetary gear (Type 2K-H) as a model which took the tooth stiffness and the run-out errors of each gear and so on. And the authors statically analyzed the relation between the run-out errors and the motion f the center of the sun gear, and further compared the calculated results with the measured ones. The conclusions are as follows : (i) The motion of the center of sun gear draws a trochoid curve. (ii) In the torque of higher-speed shaft, there is a variation whose frequencies coincide with the number of the relative revolutions of each gear for carrier, and also there may be a variation whose frequencies coincide with the number of the revolutions which can be obtained by adding or subtracting these numbers of the relative revolutions.