The development of welding robot can be divided into three generations at present:
The first generation of robots, currently widely used in teaching and reproduction of industrial robots, such robots do not adapt to changes in the environment.
Second-generation robots, based on the perspective of the reproduction of the robot to increase the sensory system, to adapt to the environment, such as sensing robots.
Third-generation robots, that is, intelligent robots, have their own ability to develop and understand human instructions in a certain way, perceive the environment, identify the operating objects, and plan their own operation steps to complete the welding task.
Industrial robots can be classified as follows:
First, in accordance with the way of driving classification:
1) Pneumatic drive
2) hydraulic drive (handling, spot welding robot)
3) Electric drive
Second, in accordance with the controlled movement classification:
1) point control type, such as spot welding robot
2) Continuous trajectory control, such as arc welding robot, thermal spraying robot.