So how to control the noise source of the gear?

Gear noise refers to the noise generated by gear pairs or gear sets due to mutual collision or resistance during transmission. So how to control the noise source of the gear? The transmission gear manufacturer tells you how to operate:

1. Improve gear manufacturing: installation accuracy and reduce tooth surface roughness value, try to choose hard shaving. Advanced teeth grinding and electro-polishing plus art. Tightly control tooth shape errors, especially to prevent concave teeth near nodes.

2. Select the repair gear: Common repair methods include tooth shape repair and edge repair. Drum teeth or thinning teeth at both ends to reduce the width of the tooth top. Tooth shape repair can reduce the instantaneous top caused by gear bending deformation, effectively reducing noise.

3. Optimize the gear planning parameters, select the small modulus: the number of small teeth, select the non-integer transmission ratio, select the appropriate tooth space and helix angle, and appropriately increase the stacking coefficient. The unbalanced centrifugal force is proportional to the square of the velocity, and reducing the circumferential velocity reduces the effect between the teeth. Choosing a non-integer ratio prevents manufacturing faults from being periodically reflected onto the drivetrain, exacerbating oscillations and noise. The side clearance creates shocks, which increase the exhaust velocity when meshing, causing vibration and noise.

4. Improve the anti-vibration ability of the gear, including selecting the displacement gear and improving the mesh stiffness of the gear; When strength allows, minimize the width of the tooth to reduce the impact of tooth direction failure; The correct selection of the gear modulus, i.e. a smaller modulus should be used to carry smaller gears. For gears with large bearings, when the effect of gear tortuousness is greater than the impact of fault, a larger modulus should be selected.

5. Equipment balance block, suitable for high-speed and important occasions of the car gear can be installed balance block to eliminate the vibration source.