a. Based on the contact analysis model and hybrid lubrication analysis model of spiral bevel gear, the changes of friction coefficient and meshing efficiency of spiral bevel gear in a meshing cycle are studied by comprehensively considering the factors such as contact geometry, contact load, velocity vector, entrainment angle and real surface roughness.
b. In the process of a pair of meshing pairs of spiral bevel gears from meshing in to meshing out, the friction coefficient first increases and then decreases, and the friction coefficient is the largest at the node. When meshing near the node, the relative error between the simplified algorithm of friction coefficient and the empirical formula is large.
c. With the increase of rotating speed, the friction coefficient and contact load ratio gradually decrease, and its variation trend is consistent with Stribeck curve Under different rotating speeds, the error of friction coefficient obtained by empirical formula is large, while under mixed lubrication and full film lubrication, the calculation method of friction coefficient in literature [8] is similar to the calculation results.
d. In a meshing cycle of spiral bevel gear, the meshing efficiency first increases and then decreases. Near the meshing point, the transmission efficiency begins to increase again because the next pair of teeth begin to mesh.
e. With the increase of rotating speed, the meshing efficiency of spiral bevel gear increases gradually Under mixed lubrication and full film lubrication, the meshing efficiency is solved by the friction coefficient formula, which is similar to the result of the accurate algorithm.