Based on the traditional modeling of helical gear

a high accuracy modeling method of involute helical gear is proposed based on Pro/E

the geometric accuracy of helical gear model is improved

the meshing process of contact is more close to the true gear tooth contact

and the accuracy of the analysis result is improved.At the same time

the law of contact stress of area variation with the installation error and the influence of installation error of helical gear on tooth root bending stress is studied

it is plays a certain guiding role on design

manufacturing

installation of the helical gear.