Dynamics analysis of a crowned gear transmission system with impact damping: Based on experimental transmission error

The impact characteristics of a crowned gear transmission system are investigated with experimental static transmission error (TE) and backlash. The effects of load, input speed and impact force exponent coefficient n on the dynamic characteristic of system are investigated. The numerical simulations show that the static TE can be combined with a backlash parameter. Under low speed conditions, the dynamic load is mainly connected with the high frequency component of TE, which can be effectively suppressed with the increase of tooth surface accuracy and the improvement of tooth profile error and roughness. Under high speed conditions, the shaft frequency component of TE has a dominate influence on dynamic load in the resonance area. Parameter n is decreasing and the dynamic load coefficient is increasing especially in the resonance area. When n is 1.0, a loss contact impact area exists in the system and the amplitudes of shaft frequency component in dynamic TE are almost equal, which indicates that dynamic characteristics are little affected by load and parameter n when there is no loss contact. It proves that the nonlinear impact model is sufficient to study the rattling process of gear pairs.