Experimental Study of the Pin Loads in a Full Pinion Engagement Planetary Gear Train

Experimental Study of the Pin Loads in a Full Pinion Engagement Planetary Gear Train

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Very few experimental studies of full pinion engagement planetary gear trains have been published; therefore, their behavior under load is little known.In this paper, the results from the experimental studies of the above-mentioned gear trains are presented, whereby the bending stresses in the planet pins are displayed both in time and frequency domains by means of 3 Pack Tables fast Fourier transform (FFT).The experiments are conducted on a mechanical closed-loop test rig, which was designed especially for the experiments.

The bending stresses in the pins are measured by strain gauges, which are mounted in a double half-bridge configuration, thus showing the stresses in two perpendicular planes.The torque applied is 200 Nm.The radial run-out errors of the planets are measured Hamag and their relation to the pin loads are analyzed.