Existence area of spur gear meshing with a given overlap coefficient

Abstract

Widespread use of gear hydraulic machines, and in particular hydraulic pumps, is explained by their high manufacturability and simplicity of design. However, the presence of the pinched volume of the pinion hydraulic machine, due to the realization of the zone of two-pair meshing at the overlap coefficient ε_α>I, leads to a decrease in the volumetric efficiency of the hydraulic machine, as well as requires technological and design measures to unload the pinched volume, which ultimately affects the labor intensity of the manufacture of the hydraulic machine, reduces the resource of operation.