Design Of Integrated Control System For Laser Robot Welding

At present,China has been the world’s largest manufacturing country for 11 years.With the development of industrial technology and the increase of labor costs,Traditional processing manufacturing is gradually being replaced by intelligent manufacturing.Due to the high power density,high processing quality,high repetitive work efficiency of industrial robots,the laser robot welding has obvious advantages in the complex trajectory and multi-track welding of metal workpieces such as stainless steel.But there are still some shortcomings,such as single trajectory teaching method,poor human-computer interaction,and low integration in current practical applications.To solve the above issues,this paper designs a set of laser robot welding integrated control system based on industrial computer,which can meet the actual diversified production and processing requirements.The proposed system is composed of industrial robots,laser units and industrial computers.The control system in the host computer is designed based on C#.Then different terminal equipments are integrated in the same system for unified control.It makes the laser units and industrial robot control systems united,solving the problem of low efficiency during mass processing.And it is easy to integrate multiple types of lasers and industrial robot equipment to meet the differentiated needs.In view of the cumbersome online teaching trajectory process and the single trajectory teaching method in the actual machining process,the system has designed a variety of welding trajectory generation methods such as online teaching,DXF file import,offline programming,and "drawing" trajectory.To realize fast and convenient generation of welding trajectory,the non-uniform rational B sample and Multiple trajectory generation algorithms are proposed.At the same time,in view of the difficulty of obtaining optimal process data,the system is designed with multiple debugging methods such as single-step operation,run-to-point and interval operation,so as to facilitate debugging and quickly obtain optimal process data.Experiments of various trajectories generation and welding of high-speed rail gate cover have been made to verified the feasibility,practicability and convenience of each function of the system.The results can meet the diversified needs of actual welding processing.The application of the laser robot welding system will expand the application fields of laser welding,improve the efficiency and quality of the laser welding and lower the labor cost with good application value and prospects.