helical gear design software free download

The authors also assumed that the load is evenly distributed over the contact line and a simplified load distribution coefficient of ISO 425E was used in the study. and Chen and Lu investigated the gear meshing efficiency under the condition of elastohydrodynamic lubrication (EHL). established the theoretical calculation method of the transmission efficiency of the gear compound motion according to the gear meshing principle and obtained the calculation formula of the transmission efficiency. proposed a gear meshing power loss model by combining the load-bearing contact model and the hybrid elastohydrodynamic lubrication (EHL) model.

The method assumes that the load is evenly distributed on both surfaces of the double-tooth meshing and static load is used as a normal load for the tooth surface. Liang, Marimuthu and Muthuveerappan carried out load-bearing contact analysis of internal and external meshing gear pairs based on the finite element principle. Several techniques have been implemented to deal with the normal load of the tooth surface. To improve calculation efficiency, the normal load model of the tooth surface and friction coefficient model is included in the meshing power loss model.Īt present, the friction coefficient model of the tooth surface mainly includes: the Coulomb friction coefficient model, the Buckingham friction coefficient semi-empirical formula, the Benedict and Kelly friction coefficient model, and the Xu EHL friction coefficient model. Many domestic and foreign scholars have proposed several theoretical models to predict the gear meshing power loss. Power loss in a gear drive system includes windage loss, oil loss, bearing power loss, gear meshing power loss, and so forth, of which the gear meshing power loss is a major constituent.

Helical gear design software free download