Gree robots passed the review with servo motors, and China made another crack on the "card neck"

The core technology with independent intellectual property rights is the “life gate” of the enterprise.

With the continuous upgrading and development of modern industrial technology, the level of intelligent manufacturing has become one of the important symbols of the manufacturing power. Industrial robots are the core equipment of the intelligent manufacturing execution layer, and are the hardware foundation for completing the final production stage of intelligent manufacturing. A representative product of advanced manufacturing.

Due to the lack of core technology, the servo motor of the core components of industrial robots in China has long relied on imports, which has restricted the development of the Chinese robot industry. The "Made in China 2025" plan has deployed the goal of robotic servo motors: by 2020, the performance, accuracy and reliability have reached the level of similar foreign products.

In order to change this passive situation, Gree started from three aspects of power density, cogging torque and current loop design, and independently developed high-performance servo motors and actuators for industrial robots, which were reviewed by the expert group of scientific and technological achievements appraisal. It has reached the "international advanced" level, in which the performance indexes of servo motor power density and overload capability have reached the "international leading" level.

Then, what is extraordinary about this self-developed servo motor for the stunned Gree industrial robot?

1, ultra-low torque ripple, accurate positioning

As we all know, the positioning accuracy of servo motors is an important indicator, and torque ripple is an important factor to ensure positioning accuracy. Gree industrial robot servo motor through the self-developed low cogging torque and torque ripple system design technology, effectively reduce the cogging torque and torque ripple of the servo motor, further improve the servo system control accuracy, the motor's cogging Moment and torque ripple performance are comparable to those of the industry's leading companies.

2, compact, responsive

Conventional servo motors use universal brakes, the structure is solidified, and the motor is limited in size. To this end, Gree independently developed the brakes, innovatively making the entire servo system play an overall collaborative design, making the motor structure more compact. The servo motor of Gree industrial robots is only 111mm in length, shorter than a cola, leading the industry, power The density is as high as 282.5W/kg, which is the highest in the industry. Combined with a 20-bit high-resolution absolute encoder, it greatly enhances the flexibility and precision of industrial robots.

3, wide operating range, stable operation

Gree industrial robot servo motor has a wide operating range, the maximum speed can reach 6500r/min, and the instantaneous overload capacity is 3.5 times rated torque, reaching the highest level in the industry, greatly improving the ability of servo motor to meet different load requirements. The reliability and stability are further enhanced.

4, excellent temperature rise characteristics, safe and reliable

As the motor power density increases and the structure is miniaturized, the motor temperature rise exceeds the standard and becomes the main bottleneck. Gree industrial robot servo motor adopts the axial heat transfer path system design technology to ensure the high power density and miniaturization of the servo motor, and control the motor temperature rise to a reasonable range.

Core Technology

Self-adhesive structure and process technology of stator core with no buckle point yoke

Integrated design technology of brake and motor end cover

Design Technology of Motor Axial Heat Transfer Path System

Low cogging torque and torque ripple system design technology

As a national enterprise, Gree does not forget its original heart, keeps its mission in mind, always adheres to the development path of independent innovation, and constantly injects strong power into China's industrial development with its own core technology, empowers more Chinese enterprises, and promotes China's manufacturing power. Transforming to a manufacturing powerhouse.

In the future, Gree will continue to exert its strength in the development of independent innovation. "With key common technologies, cutting-edge technology, modern engineering technology, and disruptive technological innovation as a breakthrough, we will dare to take the road that our predecessors have not taken, and strive to achieve key core technology independence. Controllable, firmly in the hands of innovation initiative and development initiative."