A computer control system for automatic TIG welding of aluminium alloy sheets

Aimed al the welding technological requirements of the missile shell, a computer control system for automatic TIG welding of aluminium alloy sheets has been developed in this paper. The hardware of the system is composed of the four sub-systems, i.e. welding power source. arc length controller, welding wire feeder and welding head traveller. The software of the system comprises the on-line executing program and the off-line serving program. The operating principle, specifications and control function of the system are introduced The experiments indicate that the system possesses rational hardware structure and practical software function, and has solved foe problem of high frequency interference to the computer control system. Therefore, the control system can satisfy the requirements of automatic TIG welding of the missile shell.