FRICTIONAL AGITATION JOINING TOOL, MANUFACTURING METHOD OF DOUBLE SKIN PANEL JOINING BODY AND BODY STRUCTURE OF RAILWAY VEHICLE

摘要

PROBLEM TO BE SOLVED: To provide a frictional agitation joining tool capable of manufacturing a double skin panel joining body being a complete truss structure of continuously constituting a triangular shape in the width direction by including even a joint part, when viewed from the longitudinal direction.SOLUTION: A frictional agitation joining tool FS agitates and joins a joint part 30 of two double skin panels 10 and 20 butted in the width direction by frictional heat, by rotation of a pin-shaped agitation shaft 60 projecting between an upper rotary body 40 and a lower rotary body 50. In the frictional agitation joining tool FS, an upper slide plate 70 is installed via a thrust bearing B1 in a lower end part of the upper rotary body 40, and a lower slide plate 80 is installed via a thrust bearing B2 in an upper end part of the lower rotary body 50. The lower slide plate 80 has a curved surface part 80a continuously adjusted in the longitudinal direction to a shape of an apex angle part 32 of the triangular shape formed of the joint part 30 when viewed from the longitudinal direction of the double skin panels 10 and 20.