Nonzeropositive modification spiral bevel gear has higher strength

the gear tooth milling parameters can be designed for improving its contact ratio

and this design can correct the shortage of nonzeropositive modification design

which contact ratio declines with meshing angle increasing. For nonzeroposit ive modification design and conventional design

comparing their geometrical parameters and milling parameters

and the TCA analysis of the design parameter is carried out

and the gear tooth root stress is analyzed based on UG software. The gear milling machining and rolling check experiment are carried out

the experimental results showed that the high strength spiral bevel gear could be designed by using the local synthesis and the nonzeroposit ive design technology

and the experimental gears meshing process is well.