Design And Motion Simulation Analysis Of A Robot Welding Workstation For Main Chord Bar Of Standard Section

With the increasing cost of human resources in China,all walks of life have set off an upsurge of intelligent transformation.The purpose of intelligent transformation is to use industrial robots to replace manual labor,so as to reduce costs and improve efficiency.Manual welding not only has high cost,but also the welding quality is not stable.Robot welding also has its disadvantages.A set of robot welding workstation costs a lot.The configuration of robot welding workstation,the design of positioner and welding trajectory planning are directly related to whether the robot welding workstation can operate stably after it is actually put into production,so as to achieve better welding quality and truly replace manual work.Therefore,this paper focuses on the reasonable configuration of robot welding workstation,the welding positioner suitable for the main chord,and the optimization of welding trajectory.Firstly,the requirements of the main chord welding workstation and the process characteristics of the main chord are analyzed,the combination of double robots and rotary positioner is adopted,and the standard equipment of the workstation is reasonably selected.In order to reduce the clamping time wasted by riveting and welding,and to reduce the error of repositioning,a riveting and welding integrated welding positioner is designed.Then,in order to ensure the stability of the positioner and ensure that all technical indicators of the welding robot workstation can meet the production program and relevant technical requirements of the main chord,the gear set,beam and fixture of the positioner are jointly simulated based on ADAMS and ANSYS to determine that their strength and service life are qualified.Finally,the synchronous welding program of the main chord is compiled based on PDPs,and the welding path is analyzed and the field welding test is carried out.It is concluded that the impact load of the robot joint can be effectively reduced by using the position and orientation transition processing,so that the movement of the welding gun at the transition is more stable.