It is conceivable that the development of modern industry, machines gradually replaced labor, and many factories have gradually reduced the figure of labor, but therefore also greatly reduced the labor cost of factories. Next, we will introduce various aspects of industrial robots.
Industrial robots are multi-joint manipulators or multi-degree-of-freedom machine devices widely used in the industrial field. They have a certain degree of automation and can rely on their own power energy and control capabilities to achieve various industrial processing and manufacturing functions. Industrial robots are widely used in various industrial fields such as electronics, logistics, and chemical industries.
Industrial Robots Composition:
Generally speaking, industrial robots are composed of three major parts and six subsystems. The three major parts are the mechanical part, the sensing part and the control part. The six subsystems can be divided into mechanical structure system, drive system, perception system, robot-environment interaction system, human-computer interaction system and control system.
- Mechanical structure system
In terms of mechanical structure, industrial robots are generally divided into series robots and parallel robots. The characteristic of the series robot is that the movement of one axis will change the coordinate origin of the other axis, while the movement of one axis of the parallel robot will not change the coordinate origin of the other axis. Early industrial robots used tandem mechanisms. A parallel mechanism is defined as a closed-loop mechanism in which a moving platform and a fixed platform are connected by at least two independent kinematic chains, the mechanism has two or more degrees of freedom, and is driven in parallel. The parallel mechanism has two components, the wrist and the arm. The activity area of the arm has a great influence on the activity space, and the wrist is the connecting part of the tool and the main body. Compared with serial robots, parallel robots have the advantages of high rigidity, stable structure, large carrying capacity, high fretting accuracy and low motion load. In terms of position solution, the positive solution of the serial robot is easy, but the inverse solution is very difficult; while the parallel robot is the opposite, the positive solution is difficult, but the inverse solution is very easy.
- Drive system
A drive system is a device that provides power to a mechanical structure system. According to the different power sources, the transmission method of the drive system is divided into four types: hydraulic, pneumatic, electric and mechanical. Early industrial robots were hydraulically driven. Due to the problems of leakage, noise and low-speed instability in the hydraulic system, and the power unit is cumbersome and expensive, there are currently only large heavy-duty robots, parallel processing robots and some special applications that use hydraulically driven industrial robots. Pneumatic drive has the advantages of fast speed, simple system structure, convenient maintenance and low price. However, the working pressure of the pneumatic device is low, and it is not easy to accurately position, and it is generally only used for driving the end effector of the industrial robot. Pneumatic hand grips, rotating cylinders and pneumatic suction cups as end effectors can be used for workpiece picking and assembly of medium and small loads. Electric drive is the most widely used drive method at present. It is characterized by easy access to power supply, fast response, large driving force, convenient signal detection, transmission and processing, and can adopt a variety of flexible control methods. Direct drive motors are also used for input motors or servo motors, but the cost is higher and the control is more complicated. The reducer matching the motor generally uses a harmonic reducer, a cycloidal pin gear reducer or a planetary gear reducer. Due to the large number of linear drive requirements in parallel robots, linear motors have been widely used in the field of parallel robots.
- Perception system
The robot perception system converts various internal state information and environment information of the robot from signals to data and information that can be understood and applied by the robot itself or between the robots, in addition to the need to sense the mechanical quantities related to their own working states, such as displacement, speed and force Etc., visual perception technology is an important aspect of industrial robot perception. The visual servo system uses visual information as a feedback signal to control and adjust the position and posture of the robot. Machine vision systems are also widely used in various aspects of quality inspection, workpiece identification, food sorting, and packaging. The perception system consists of an internal sensor module and an external sensor module. The use of smart sensors improves the maneuverability, adaptability, and intelligence of the robot.
- Robot-environment interaction system
The robot-environment interaction system is a system that realizes the mutual communication and coordination between the robot and the equipment in the external environment. The robot and external equipment are integrated into a functional unit, such as processing and manufacturing unit, welding unit, and assembly unit. Of course, multiple robots can also be integrated into a functional unit to perform complex tasks. A
- Human-computer interaction system
The human-computer interaction system is a device for humans to contact and participate in robot control. For example: standard terminal of computer, command console, information display board, danger signal alarm, etc.
- Control system
The task of the control system is to control the robot’s actuator to complete the prescribed movements and functions according to the robot’s work instructions and the signals returned from the sensors. If the robot does not have information feedback features, it is an open-loop control system; if it has information feedback features, it is a closed-loop control system. According to the control principle, it can be divided into program control system, adaptive control system and artificial intelligence control system. According to the form of control motion, it can be divided into point control and continuous trajectory control.
Eternal Bliss Alloy Casting & Forging Co, Ltd.
what’s app:+0086-182 6227 4295