For the phenomenon of meshing interference

impact and end contact of spur bevel gear in working

the idea of orthogonal design for isometric modification is put forward

the principle of isometric modification and its manufacturing process is introduced.In order to optimize the effect of modification

the amount of isometric modification

modification height and the modification area of these three factors most affect the effect on modification are identified

three levels of each factor are selected for orthogonal experimental design

and then three-dimensional solid models of standard gears and modification gears are established by SolidWorks

based on gear dynamic FEA simulation analysis with ANSYS/LS-DYNA

the various factors affect the degree of importance on the effect of isometric modification is identified

and then the optimal isometric modification parameters are obtained.Through the simulation analysis

the results indicate that optimal isometric modification not only reduce meshing interference

impact and vibration effectively but also can avoid the edge effect

the load distribution is homogenized

and the bearing capacity of gear pair is improved

it has the comprehensive effect of profile modification and longitudinal modification.The conclusion can provide some references for perfecting isometric modification theory of straight bevel gear.