Study the essential causes of gear pair vibration
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The gear speed and load are the two surface causes that affect the vibration of the gear pair. Based on the root mean square of the vibration acceleration of the gear under different working conditions, the essential causes of the vibration of the gear pair are studied, so that the arc teeth under different working conditions The research on the vibration reduction and noise reduction of bevel gears laid the foundation. The influence of geometric transmission error, nonlinearity of meshing stiffness and nonlinearity of bearing stiffness on the vibration of the transmission system.
Neglecting manufacturing tolerances, geometrical transmission errors are always the main cause of normal vibration of the gear pair. Under different working conditions, geometric transmission error and meshing stiffness have different degrees of influence on gear vibration. Under high-speed conditions, regardless of the load size, geometric transmission error is the most important factor causing gear vibration; in low-speed conditions, both affect gear vibration. Torsional vibration causes axial and radial vibration of the gear pair, but the torsional vibration is essentially caused by the change in meshing stiffness. Different loads will cause changes in the support stiffness of the system, but the change is not obvious from the whole, and the nonlinearity can be neglected when solving the dynamic equation.