With the development of electronic technology, computer technology, numerical control and robotics, automatic welding robot, Since the 60 's began to be used in production, its technology has become increasingly mature, mainly has the following advantages:

1) stability and improve the quality of welding, welding quality can be reflected in the form of numerical;

2) Increase Labor productivity;

3) improve the labor intensity of workers, can work in harmful environment;

4) Reduce the requirements of workers ' Operation technology;

5) shorten the preparation cycle of product retrofit, reduce the corresponding equipment Investment. therefore, in all walks of life has been widely used.