Decelerators for humanoid robots: Reduce speed and increase torque, doubling demand
With the continuous iteration of AI technology, technology giants and entrepreneurial pioneers have successively entered the humanoid robot industry. As one of the important terminal applications of AI, humanoid robots are expected to experience rapid development. As an essential component of humanoid robots, precision reducers may benefit greatly, and there is a vast space for domestic substitution. Enterprises with related product layouts or plans to enter the field of precision reducers are expected to experience rapid growth.

Introduction to reducer

1、 Definition: A reducer is a device located between the power source and the actuator, which is a power transmission mechanism that uses a gear speed converter to reduce the number of revolutions of the motor to the desired number and obtain a larger torque.

2、 Function:

Reduce speed: During the operation of the equipment, the motor can provide a higher speed, but different application scenarios and functional requirements require matching different speeds. Therefore, a reducer is needed to slow down the output speed of the motor.

Increasing torque: The decrease in speed results in an increase in torque, allowing the motor with a constant rated output power to cope with larger loads and resist greater resistance.

Increasing transmission accuracy: The reducer can improve the transmission accuracy of the motor, reduce transmission errors and return errors, and is suitable for occasions with high requirements for transmission accuracy.

Increasing load capacity: The deceleration motor increases the output torque through the reducer, enhancing the system's adaptability to loads and enabling it to withstand larger loads and impact loads.

3、 Classification of reducers: reducers can be divided into three categories based on their purpose and accuracy:

Universal reducers are widely used in various fields to meet basic power transmission needs;

Specialized reducers, mainly large and extra large, are mostly non-standard and industry-specific products, including marine gearboxes, metallurgical gearboxes, wind power gearboxes, engineering machinery gearboxes, etc;

Precision reducers with small return clearance and high transmission accuracy are commonly used in high-end fields such as robots and CNC machine tools, including precision planetary reducers, RV reducers, and harmonic reducers.

1、 Precision reducers mainly include: planetary RV、 harmonic drive

The planetary reducer is mainly composed of planetary gears, sun gears, and internal gear rings. It has a compact structure and high transmission efficiency, and is suitable for the body rotation joints with low precision requirements in robots;

RV reducer, with a wide range of reduction ratios and strong load-bearing capacity, has good rigidity and overload impact resistance, and is widely used in heavy-duty positions such as robot bases, arms, shoulders, etc;

Harmonic reducer, based on the elastic deformation principle of flexible wheels, is small in size, light in weight, and has high transmission accuracy. However, its load-bearing capacity is relatively weak, making it more suitable for industrial robot arms, wrists, hands, and other components in industries such as 3C, semiconductor, and medical equipment.