| 摘要 |
PROBLEM TO BE SOLVED: To provide a metal tube expanding tool capable of reducing the force applied to a metal tube in tube expanding and preventing breaking of the metal tube. SOLUTION: In a tube expanding tool 1 to expand the metal tube by inserting the tool into a metal tube 10 and by hydraulically driving in the axial direction of the metal tube, a pressure receiving body 3, an outer periphery of which slides on the inner peripheral face 12 of the metal tube expanded and which is opened toward a rear side, is arranged to the rear side of an expanded tool body having a truncated cone with a small diameter side facing toward a front side. |
