How to further optimize the gear structure of B3SH17-45 industrial gearbox to improve transmission smoothness

To further optimize the gear structure of B3SH17-45 industrial gearbox to improve transmission stability, the following aspects can be taken into consideration:

Gear parameter optimization

Shape modification design: Drum shaped teeth can be used for slight modification along the tooth width direction to compensate for shaft deformation, installation errors, and stress concentration at the tooth end caused by thermal deformation; Top/root trimming can also be performed to remove a small amount of material from the top or root of the tooth, avoiding meshing impact and reducing noise and vibration.

Increase coincidence degree: If the strength allows, appropriately increase the tooth width, reduce the modulus, or optimize the helix angle of the helical gear to improve coincidence degree, reduce single tooth load and transmission fluctuation, and enhance smoothness.

Pressure angle optimization: Appropriately increasing the pressure angle, such as to 25 °, can improve tooth root strength and bending stiffness, reduce the influence of elastic deformation on meshing, but attention should be paid to the impact on bearing load.

Improve machining accuracy

Improving gear manufacturing accuracy: reducing tooth pitch, tooth profile, runout, and tooth orientation errors, using gear grinding technology to improve gear accuracy, high-precision gears can improve transmission accuracy, smoothness, and load uniformity.

Optimize tooth surface smoothness: Improve tooth surface smoothness through grinding, honing, and other methods. Teeth with high smoothness can reduce friction and vibration, thereby reducing noise and improving transmission smoothness.

Improve gear structure design

Increasing the tooth width of gears: Increasing the tooth width of gears can increase the contact area of gears, reduce the unit contact load, improve the bearing capacity and anti tooth indentation ability of gears, and thereby improve transmission stability.

Adopting a reasonable tooth profile: involute or circular arc tooth profiles can be used to reduce lateral loads on gears, reduce root stress concentration, and improve transmission stability.

Optimize assembly process

Ensure fit accuracy: Ensure the fit accuracy between the gear and the shaft, use transitional or small interference fit to avoid clearance, and use high-precision positioning end faces to ensure that the gear end face runout is within the allowable range.

Accurately adjust the axis: Use a laser centering instrument or precision dial gauge to carefully adjust the parallelism and center distance of the two axes, ensuring smooth meshing of the gears.

Choose appropriate materials and heat treatment processes

Choose high-quality materials: Use gear materials with high strength, high stiffness, and low friction coefficient, such as alloy steel, to improve the load-bearing capacity and anti tooth surface peeling ability of the gear, and reduce the deformation of the gear during transmission.

Optimizing heat treatment process: By using quenching, tempering and other heat treatment processes, the surface hardness and toughness of gears are improved, their load-bearing capacity and wear resistance are enhanced, and the comprehensive performance of gears is improved, thereby enhancing the smoothness of transmission.