Key components of industrial robots - KUKA robots

1. High-precision reducer

Fine reducer, in the field of mechanical transmission, is the central equipment between the power source and the executive organization, usually it puts the power of high-speed operation such as electric motor and internal combustion engine through the pinion on the input shaft, and meshes the large gear on the output shaft, so as to achieve the purpose of reducing the speed and increasing the torque.

Without a reducer, the robot articulated arm cannot work normally.

The fine reducer can be divided into standard precision and high precision according to the accuracy; According to the use, it can be divided into military and civilian; According to the operating environment, it can be divided into standard environment, low temperature environment, clean room environment and vacuum environment.

At present, there are few RV reducer manufacturers with large-scale production capacity and reliable product functions in the world, and the vast majority of the world's market share has been occupied by Japan companies. Although the price of domestic reducer is cheap and the supply period is short, there is a big gap between the product function and foreign products. Therefore, most of the domestic reducers can only be used for medium and low-end robots, and cannot meet the needs of high-end robot shopping malls.

To this end, the "Robot Development Plan" makes it clear that after carrying out high-strength wear-resistant material skills, processing technology optimization skills, high-speed smooth skills, high-precision device skills, reliability, and exploring life detection skills and new transmission mechanisms, we will carry out high-efficiency, low-component, long-term maintenance-free serialized reducers suitable for robot use.

Key components of industrial robots - KUKA robots

Key components of industrial robots - KUKA robots

2. Special servo motors and drives for high-performance robots

As an executive element in the control system, the servo motor is one of the primary factors affecting the operation function of the robot. The robot servo system is composed of three parts: servo motor, servo drive, and command organization, the servo motor is the executive organization, which is relied on to complete the movement, the servo drive is the power supply of the servo motor, and the command organization is to send pulses or give speed for the normal operation of the cooperative servo drive.

Now, AC and DC servo motors with high starting torque, large torque and low inertia are widely used in industrial robots. Domestic servo motors still need to make breakthroughs in the following aspects:

1. The shape is generally long, the appearance is rough, and it is difficult to use it on some advanced robots.

2. It is the improvement of the reliability of the signal connector, and the demand is optimized in the direction of miniaturization, high density and integrated design with the servo motor body, so as to facilitate the device, debugging and replacement.

3. It is another core skill - high-precision encoders, especially the multi-turn encoders used on robots, which rely heavily on imports, which is a big bottleneck that restricts the development of China's first-class robots.

4. It is a lack of basic research, including high-value encoder skills, industrial production skills of high-end motors, etc.

5. The industrial coordination of all parts of the servo system is insufficient, which makes it difficult to play the overall function of the servo motor and the drive system.

Servo motor is not only directly related to the competitiveness of domestic robot enterprises, in the long run, the development of the entire robot industry in China is of strategic significance. To this end, the "Robot Development Plan" particularly emphasizes that after the discussion of high magnetic material optimization, integrated optimization design, processing device process optimization and other skills, the efficiency of servo motors can be improved, power loss can be reduced, and high power density can be completed. Carry out high-torque direct drive motors, disc hollow motors and other special motors for robots.

3. High-speed and high-performance controller

Is it a human who directs the robot's work? No, it's the manipulator. The industrial robot manipulator mainly controls the movement position, posture and track of the robot in the working space, the operation sequence and the time of action.

The manipulator is the "decision-making organization" that issues orders, and is the brain of the active chemical plant. Mastering the dominance of the controller is equivalent to controlling the functions of the robot. In China, the four major families of the controller market accounted for 53%, during which Fanuc accounted for 16%, Kuka accounted for 14%, and ABB robots accounted for 12%. The proportion of domestic first-class controller shopping malls is less than 16%, which shows that in the field of controllers in China, the degree of domestic production is low.

At present, the following problems exist in domestic manipulator shopping malls:

1. There are complete types of robots that can be controlled by domestic controllers, but there is still a lot of room for improvement in terms of operation accuracy, stability, response speed, and ease of use.

2. The binding effect of the robot body and parts is strong, and the generally sophisticated robot companies can complete the independent development and control of the body and core components, so it is difficult to surround the domestic enterprises that simply do the controller.

3. The domestic controller is cost-effective, which is both an advantage and a disadvantage, and the advantage is that it can occupy low-end shopping malls and emerging categories that do not require high precision of robots; The downside is mainly manifested in high-end shopping malls, and the road is long and resistant.

To this end, the "Robot Development Plan" particularly emphasizes that through the development of high-performance joint servo, oscillation pressing skills, inertia dynamic compensation skills, multi-joint high-precision motion calculation and planning, etc., the motion accuracy in the process of high-speed variable load use is improved, and the dynamic function is improved. Carry out and master the skills of open manipulator software development channel to improve the scalability, portability and reliability of robot manipulators.

Fourth, sensors

The sensor is a kind of detection equipment, which can sense the measured information and convert it into electrical signals or other measurable signal output according to certain rules, so as to meet the requirements of information transmission, processing, storage, display, recording, and control.

The precise operation of industrial robots depends on an accurate understanding of their own state, the operating object and the operating environment, which is done through sensors.

Due to the late start of the industry and the pressure of competition, China's sensor development is still facing three major dilemmas.

Key components of industrial robots - KUKA robots

Sections viewed

Contact

working hours