Introduction of Mesh Impact in Gear Transmission
2021-09-15
When a pair of gears is processed, when meshing, the teeth of the gears will generally deform elastically after being subjected to force, which will have a certain impact on the meshing of the gears. When the teeth of the two gears mesh, the previously meshed gear The load force of the teeth is usually relatively reduced, and they deform back toward the load position, thereby giving the gear an acceleration.
Then add the bending deformation and design and manufacturing errors of the original meshing gear teeth, so that the gear teeth cannot collide with each other during the entire process from meshing in to meshing out, and a meshing impact force will be formed. At this time, the gears will arouse circular vibration. , radial vibration, axial vibration, resulting in noise, and then transmitted through the air and other media, so the meshing impact force and vibration generated in the process of gear meshing is the cause of noise.
When the mechanism of gear vibration and noise in gear processing, the gear can be regarded as a spring mass vibration system, the gear acts as a spring, the gear acts as a mass, and the pitch line impact force and meshing impact force can be regarded as external forces, causing the gear to generate circumferential vibration, and the bearing Radial and axial vibrations are generated by the gears induced by the shafting, and the bearings and housings are transmitted to the gearbox, causing the vibration of the wall of the box, and even the vibration of the entire device, which is radiated into the air as gearbox noise.
The above is an introduction to the impact of meshing in gear transmission.
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