Welding robots are industrial robots engaged in welding (including cutting and spraying). According to the International Organization for Standardization (ISO), industrial robots are defined as standard welding robots. Industrial robots are a multi-purpose, reprogrammable automatic control manipulator (Manipulator) with three or more programmable axes for Industrial automation. In order to adapt to different uses, the mechanical interface of the last axis of the robot is usually a connecting flange, which can be connected with different tools or end effectors. Welding robots are equipped with welding tongs or welding (cutting) guns on the final shaft flange of industrial robots to enable welding, cutting or thermal spraying.
Welding robot mainly includes robot and welding equipment. The robot consists of the robot body and the control cabinet (hardware and software). The welding equipment, for example, arc welding and spot welding, is composed of welding power supply (including its control system), wire feeder (arc welding), welding gun (clamp) and other parts. There should also be a sensor system for intelligent robots, such as laser or camera sensors and their control devices.
With the development of electronic technology, computer technology, numerical control and robot technology, the demand for automatic welding robots is increasing. Its advantages are: 1. Stability and improvement of welding quality, which can reflect welding quality in the form of numerical values; 2. Improve labor Productivity; 3. Improve the labor intensity of workers, can work in a harmful environment; 4. Reduce the requirements for workers’ operating technology; 5. Shorten the preparation cycle of product retrofitting and reduce the corresponding equipment investment.
Therefore, it is widely used in various industries.
History and development of welding robot
According to statistics, welding robots serving the field of welding processing account for about half of the industrial robots in service worldwide. Welding robots are industrial robots that perform welding tasks instead of welders in the welding production process. Among these welding robots, only a few are specially designed for a certain welding method, and most welding robots are constructed by attaching certain welding tools to general industrial robots. In a multi-tasking environment, a single robot does not only perform welding operations, but can also complete a variety of tasks including welding, including picking, handling, and installation. The programmer can input corresponding program instructions to the robot. The robot can automatically replace the tools on the manipulator according to the program instructions to complete the corresponding tasks. Therefore, in a sense, the development history of industrial robots is the development history of welding robots.