The Control System of Plane Curve Welding Based on PLC

A new welding control system based on PLC is proposed in this paper, which is very useful for complex curved plane surface welding. Its basic thought is to fit the welding geometric locus by straight line and resolve plane locus into components along three axes. The value of speed, distance and angle can be calculated into number of impulse and frequency of the drive servomotors, and these data are saved in the PLC data field. It is proved by practical application that this system is steady and reliable.