The drive source of the industrial robot drives the movement or rotation of the joints through the transmission parts, and then completes the movement of the body, arms and wrists. Therefore, transmission components are important components of industrial robots. According to different transmission types, transmission components can be divided into linear transmission organization and rotary transmission organization. With so many active joints, precise movement and command transmission can also be done, and each part works closely together to complete complex jobs. Joints mainly refer to the most important basic components of industrial robots, and they are also the core components of movement: fine reducers. It's a precise power delivery mechanism. The speed converter of the gear is used to reduce the number of revolutions of the motor to the required number of revolutions and get a larger torque device, then reduce the speed and increase the torque. What are the characteristics of industrial robot joint drive chains?
1. The power supply of industrial robots is generally a communication servo motor. Because of the pulse signal drive, the servo motor itself is able to complete the speed adjustment
Industrial robots generally repeat the same process;
2. In order to ensure that industrial robots can reliably complete the process mission in production and ensure the quality of the process, the positioning accuracy and repeated positioning accuracy of industrial robots are required.
Therefore, it is necessary to improve and ensure the accuracy of industrial robot RV reducer or harmonic reducer.
3. Another function of the fine geared motor in industrial robots is to transmit greater torque. When the load is large, it is not cost-effective to blindly increase the power of the servo motor, and the reducer can increase the output torque in the appropriate speed range.
4. The servo motor simply generates heat and low-frequency oscillation when running at low frequency, which is not conducive to the long-term periodic operation of industrial robots, nor is it conducive to ensuring its accurate and reliable operation. The presence of fine geared motors allows servo motors to run at the right speed and reduce the speed precisely to the required speed for each part of the industrial robot, and then improve the stiffness of the mechanical body and output more torque.
What are the features of the joint transmission chain of industrial robots? Compared with ordinary reducers, robot joint reducers have the characteristics of short transmission chain, small size, high power, light weight and convenient control. There are two types of reducers widely used in joint robots: RV reducers and harmonic reducers. Advantages of synchronous belt transmission: no slipping, accurate transmission ratio, stable transmission; Large gear ratio range; The initial tension is small; Shafts and bearings are not susceptible to overload. However, the production and device of this transmission organization are strict, and the material requirements of the belt are high, so the cost is high. Synchronous belt drive is suitable for high reduction ratio transmission between motor and reducer.
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