Reliability Analysis of Position Accuracy of Welding Robot

In order to realize the high-quality work requirements of welding robots, based on the actual working conditions, the seven-degree-of-freedom series welding robot is taken as the research object, we design and determine the relevant technical parameters of it, and establish the kinematics model in D-H coordinate system. The micro-displacement synthesis method is introduced, and the static pose error model and reliability calculation model of the robot are established. The influencing factors of the accuracy of the welding robot's pose accuracy are analyzed and the sensitivity of the influencing factors was obtained. Finally, based on Monte-Carlo simulation method, the link parameters of the welding robot are taken as an example to verify the reliability of the position and accuracy of the welding robot, and the relevant results are obtained. The work in this paper is of some guiding significance in reliability design and assessment of a welding robot.