Expert’s common factor of painting motion in auto repair painting process

Abstract

This study aimed to develop a learning system for studying the coating and painting tasks performed in automobile repair. This study analyzed and compared the characteristics of skilled spray gun handling for automobile repair painting with those with little experience. The spray gun movements and postures of 10 participants were measured using a motion capture system. The results showed the distance between the door and the experts’ body to be approximately 1 m. The experts kept their axillae closed, bent an elbow, and set the distance between the door and the spray gun to approximately 0.22 m. The experts’ spray gun running speed was faster than that of non-experts, and the speed reduced at the door panel edge. The experts’ body movement realized a uniform thickness coating.