The force mode of the gear of the miniature worm gear reducer

In the reducer gearbox, its input bearing is subjected to the axial force and torque transmitted from the motor shaft. The gear on the intermediate shaft bears the torque from the input end and the braking torque from the output end when braking and the braking torque from the output end when braking. The gear on the output shaft bears the torque transmitted from the intermediate shaft and at the same time bears the braking torque transmitted from the output end when braking.

Common materials and properties of gears for reducer gearboxes; in reducer gearboxes, the commonly used materials for gears are low-carbon alloy steel, and the reducer gear material is carburized steel. The performance requirements of carburizing steel are as follows.

1. The ability to accept carbon should be strong, and the surface can absorb enough carbon; the carburizing rate is fast; the carbon concentration gradient is gentle; the amount of retained austenite is appropriate; the carbides are massive, numbered, and uniform in size and distribution to ensure the carburized layer Have sufficient hardness, strength and toughness.

2. The overheating sensitivity should be small. When heated for a long time at the carburizing temperature, the austenite can still maintain a fine grain state in order to achieve direct quenching and prevent the mechanical properties from deteriorating due to the coarse martensite grains after quenching. .

3. There must be sufficient permeability to ensure that the core has high yield strength and toughness after quenching; in addition, a mild cooling medium can be used to greatly reduce the possibility of deformation and cracking of carburized parts.

4. Severe band structure, coarse inclusions and cracks are not allowed in the low-carbon alloy steel, especially on the surface of the carburized layer.