ROTARY TOOL UNIT, FRICTION STIR WELDING METHOD, DOUBLE-SKIN PANEL ASSEMBLY, AND FRICTION STIR WELDING METHOD FOR DOUBLE-SKIN PANEL ASSEMBLY

摘要

The present invention provides a kind of joint method, when being engaged using twin shaft shoulder stirring-head type tool to a pair of of metal plate, is able to suppress the generation of joint defect and can be engaged well. Rotate tool unit(2)With twin shaft shoulder stirring-head type tool(5),The twin shaft shoulder stirring-head type tool(5)By first axle shoulder(11),Second shaft shoulder portion(12)Be formed in first axle shoulder(11)With the second shaft shoulder portion(12)Between pin(13)It constitutes,It is characterized in that,Rotate tool unit(2)With being fixed on friction-stir device(1)Collet portion(1a)On cylindric holder(3),It is inserted into holder(3)Internal and and holder(3)The sliding axle rotated integrally(4),First axle shoulder(11)It is fixed on sliding axle(4)Front end twin shaft shoulder stirring-head type tool(5)And so that sliding axle)(4)Relative to holder(3)The mode to slide axially is formed in holder(3)With sliding axle(4)Between sliding members(6).