What are the factors that affect the quality of High torque planetary geared electric motor?

The factors affecting the quality of High torque planetary geared electric motor are mainly as follows:

Design factors:

Gear design:

Gear parameters: reasonable tooth number, modulus, pressure Angle, tooth width and other parameters design, directly affect the High torque planetary geared electric motor transmission efficiency, bearing capacity and noise level. For example, an appropriate increase in tooth width can improve the load carrying capacity, but too wide may to partial load when the gear is running; A small pressure Angle can make the gear run more smoothly and make less noise, but it may reduce the transmission efficiency to a certain extent.

Gear accuracy: The manufacturing accuracy of gear, including tooth shape accuracy (such as tooth profile deviation, tooth pitch deviation, etc.), tooth orientation accuracy (helix deviation, etc.) and surface roughness, etc., is crucial to the quality of High torque planetary geared electric motor. High-precision gear engages more smoothly, reduces vibration and noise, and improves transmission accuracy and service life. For example, gear with high profile accuracy can better ensure contact area and uniformity during transmission and reduce wear.

Gear modification: According to the actual working conditions, the appropriate modification of the gear (such as tooth top modification, tooth root modification, etc.) can effectively improve the meshing performance of the gear, reduce noise, reduce vibration, and improve the bearing capacity and service life.

Structure design:

Box structure: the rigidity and strength of the box should be enough to ensure that during the operation of the motor, it can withstand the various forces and moments generated by the gear transmission to prevent deformation and rupture. At the same time, a reasonable box structure design should also consider the needs of heat dissipation and lubrication, such as the setting of heat ribs, reasonable oil passages, etc.

Shafting design: The diameter, length and support mode of the input shaft and output shaft should meet the transmission requirements and working environment of the motor. The rigidity and strength of the shaft are insufficient, which may cause the shaft to bend and deform, and affect the normal meshing of the gear. A good support method (such as the selection of the appropriate bearing type and installation method) can improve the rotation accuracy of the shaft and reduce friction and wear.

Internal space layout: Reasonable internal space layout can ensure accurate installation of gear, bearings and other parts, appropriate clearance, to avoid mutual interference and friction. At the same time, it is also conducive to the effective play of the heat dissipation and lubrication system.

Raw material factors:

Gear materials: Commonly used gear materials are good alloy steel (such as 20CrMnTi, 42CrMo, etc.), carburized steel and so on. The choice of materials should be considered according to the working load, speed, working environment and other factors of High torque planetary geared electric motor. For example, in the case of high load and high speed, it is necessary to choose high-strength and high-toughness materials; In some environments where corrosion resistance is required, materials with good corrosion resistance should be selected. The quality of the material directly affects the strength, hardness, wear resistance and toughness of the gear, and then affects the quality and service life of High torque planetary geared electric motor.

Bearing material: The quality of bearings has a great impact on the running accuracy and service life of High torque planetary geared electric motor. Commonly used bearing materials are high carbon chromium bearing steel, carburized steel and so on. Good bearing materials should have good hardness, wear resistance, fatigue resistance and dimensional stability. For example, bearings made of high-quality bearing steel can maintain stable operating performance under High speed and high load conditions, reduce friction and wear, and improve the overall quality of High torque planetary geared electric motor.

Other materials: such as box materials (cast iron, cast aluminum, etc.), sealing materials, etc., will also have an impact on the quality of High torque planetary geared electric motor. The box material should have sufficient strength and stiffness, good casting performance and processing performance; The sealing material should have good sealing performance and aging resistance to prevent oil leakage and external dust, moisture, etc., from entering the interior of High torque planetary geared electric motor.

Manufacturing process factors:

Gear processing technology:

Cutting processing: including hobbing, gear shaper, shaving, grinding and other processing methods. The precision and surface quality of the cutting process directly determine the precision and surface roughness of the gear. For example, using high-precision gear hobbing machine and reasonable processing parameters, can effectively control the tooth shape error and tooth spacing error; The grinding process can further improve the precision and surface quality of the gear and reduce the noise.

Heat treatment process: The appropriate heat treatment process (such as carburizing, quenching, tempering, etc.) can improve the hardness, strength and wear resistance of the gear, improve the internal organization of the gear, so as to improve the bearing capacity and service life of the gear. For example, after carburizing and quenching the gear, the surface hardness can be greatly improved, and the wear resistance is enhanced; And the tempering treatment can make the gear obtain good comprehensive mechanical properties.

Gear modification process: Accurate gear modification process, according to the design requirements of the gear to carry out accurate trimming, rounding and other operations, to ensure that the modification effect meets the design expectations, improve gear meshing performance and reduce noise.