Research On Acquisition And Control Of Welding Seam Tracking Deviation Signal

With the rapid development of science and technology of our country,the production level has been greatly improved,but the precision of seam tracking is still a difficult problem to solve,this topic will use the visual tracking deviation signal acquisition method of V groove image processing and control related research.Based on the brief analysis of the welding seam tracking deviation signal acquisition and control status at home and abroad,the seam tracking and control system is designed.The welding robot body,the control cabinet,the CMOS camera,the laser,the computer and the components to be welded and so on are arranged reasonably and efficiently to ensure the seam tracking system can track the V-groove seam image with high efficiency and high precision.The correctness and rationality of the design of weld tracking system are verified by simulation welding of V-groove weld.The study of tracking and deviation signal acquisition and control is divided into two stages.In the first stage,the MATLAB software is used to process the image,and the second stage is to complete the tracking control command through the configuration of the interface parameters and the program design.In the aspect of V-groove image acquisition and processing,the difficulties of removing noise,breakpoint connection and thinning processing are analyzed.A series of program algorithms are designed to solve these problems by verifying the V-groove image.The algorithm can solve these problems.In the control system design,in order to enable communication between the computer and the robot,you need to set the parameters of the serial port,but also need to walk according to welding path prepared robot control program.After the parameter setting is completed,the workpiece is welded to verify the rationality of the system design.In the weld tracking test,the sample selection of V-groove low-carbon steel plate,plate thickness 20 mm,groove angle of 60 °,the gap size of 0mm.In order to be able to accurately measure the deviation,In the 300 mm long weld,every 20 mm interval selected a set of data,a total of 15 sets of data selected for testing.After the experiment,the 15 sets of data were measured,and the measured data were compared with the measured data before welding.The results show that the deviation range of the actual welding is ±1mm,which meets the design requirements.