Study On The Meshing Characteristics Of Hypoid Gears

Gear is an important mechanical part. Since the simulation is a necessary part of the gear in order to ensure reliable operation of the gear, the simulation of gear meshing is carried out with a great practical significance. The subject is supported by the National Natural Science and Technology Foundation: Dynamic characteristics of the helical gear is based on mixed lubrication theory, including the establishment of hypoid bevel gear parametric model, the analysis of kinetic contact under different conditions, and the meshing characteristics of hypoid gears. Completed as follows:Firstly, the actual processing method is determined by spiral bevel gear generating mechanism and structural characteristics of hypoid bevel gear. The tooth surface equations are established by the coordinate transformation and gear basic parameters. Discrete point data, which is obtained by solving those equations by mathematical software, is filed into 3D surface modeling software to obtain a 3D model of gears. Correct meshing of the gears provides a correct model for the subsequent finite element analysis.Secondly, more accurate 3D finite element model is established after model meshing and mesh quality inspection in finite element software. The curve of Von Mises stress changing with time in different condition is outputted by changing the boundary conditions of hypoid bevel gears contact stress analysis. The results obtained conclusions that speed and load influences stress, the stress increase with the speed rise or load increase.Finally, meshing points are obtained by using the finite element method, analyzing the load on the engagement position and the contact tracks. After extracting the meshing force and deformation in the stress analysis process, the curve of mesh stiffness over time is obtained. Compare different load stiffness curve, that light load mesh stiffness changes significantly and the mesh stiffness increase with the increase of load in most instances.Generally, accurate finite model of Gleason system hypoid bevel gears is established in this paper, and gears dynamic performance is studied under different conditions. That contributes to improving production efficiency and quality of the gear transmission efficiency. Hypoid gear contact analysis in this paper, which provides a reference for optimizing the tooth surface accuracy factor and indicates the direction of the tooth surface modification, is a useful exploration in the field of research and the optimization of tooth surface.