Introduction to the principle application of five-rod parallel robots

Since the advent of industrial robots , robots using serial mechanisms have dominated the market. Serial robots have a simple structure a large operating space, so they are widely used. Due to the limitations of serial robots themselves, researchers have gradually turned their research direction to parallel robots. Next, let's take a look at the principles applications of five-bar parallel robots.

1. Interpretation of the principle structure of parallel robots

1. The robot has 2 degrees of freedom;

2. Input: The pink crank, whose motion is programmed to obtain the trajectory of the green tool head;

3. The design of the parallel manipulator is usually shorter simpler than that of the serial manipulator, making it rigid preventing unnecessary movement;

4. The positioning error of one arm of the parallel manipulator is averaged with the other arms, rather than accumulated;

5. Due to its characteristics, parallel robots have been widely used in fields that require high rigidity, high precision large load without requiring a large working space.

2. Characteristics of parallel robots

1. The parallel structure is supported by 6 rods at the end. Compared with the cantilever beam in series, it has greater rigidity more stable structure.

2. Due to its high rigidity, the parallel structure has a much higher load-bearing capacity than the series structure under the same dead weight volume.

3. The error on the end piece of the series mechanism is the accumulation amplification of the errors of each joint, so the error is large the precision is low. The parallel type does have such an error accumulation amplification relationship, the micro-motion precision is high.

4. The drive motor transmission system of the serial robot are mostly placed on the moving arms lower arms, which increases the inertia of the system deteriorates the dynamic performance, while the parallel robot places the motor on the base to reduce the motion load.

5. In terms of position solution, the forward solution of the serial mechanism is easy, but the inverse solution is difficult. The forward solution of the parallel mechanism is difficult, but the inverse solution is very easy, the robot online real-time calculation needs to calculate the inverse solution. 　　

3. Application of Parallel Robots

The emergence of parallel mechanisms has expanded the application scope of robots. With the continuous deepening of parallel robot research, its application field is becoming more more extensive. The application of parallel robots can be roughly divided into six categories: motion simulators, parallel machine tools, industrial robots, micro-motion mechanisms, medical robots manipulators.

1. Sports simulators. The most widely used are flight simulators.

2. Parallel machine tools. The most attractive application of parallel mechanisms is as parallel machine tools.

3. Industrial robots. With the rapid development of industrial modernization, the continuous improvement of processing technology, the continuous advancement of technology, the application of industrial robots has been recognized accepted by more more companies.

4. Micro-motion mechanism. Micro-motion mechanism is an important application of parallel robots.

5. Medical robots. Medical robots have become a new technology field that has attracted the attention of both the Medical Surgery Society the Robotics Society.

6. Manipulator. The parallel robot can be used as a docking mechanism between spacecraft space docking device.

The above is an introduction to the principle application of five-bar parallel robots. How much do you know about them? Shenzhen Huiwen Intelligent Co., Ltd. has a professional management engineering technical team. The core members are mainly universities such as the Chinese Academy of Sciences, Beijing University of Aeronautics Astronautics, Harbin Institute of Technology. With professional technology service capabilities, we can provide you with intelligent robot product solution design, OEM, ODM sales services of related parts. We are willing to work with you to create a better future in the field of robots!