Analysis of the End Effector Positioning Response of a Spot Welding Robot Arm Relative to the Specimen Point.

Abstract

This paper analyzes the response of the robotic arm's end effector in relation to the specimen target point, focusing on addressing the gap in robotic arm applications for spot welding and their utilization in batch production and group technology systems. The study proposes a novel design that enhances the functionality of manual spot welding machines, paving the way for the development of multi-arm robotic spot welding systems. Through this design, various potential target positions were tested, revealing an average response accuracy of the arm in achieving the target with an error below 0.05, indicating an accuracy rate of over 95%. These findings demonstrate that the robotic arm prototype is suitable for spot welding applications with high accuracy. However, it is noted that the arm remains semi-automatic and has not yet achieved full automation.