Tube bending system

A tube bending system for bending a processing target tube into a predetermined shape, the processing target tube including a metal tube having two ring-shaped projections, respectively formed at each of two end portions of the metal tube, and including two flare nuts respectively mounted at an outer periphery of the metal tube so as to correspond to one or another of the two ring-shaped projections, the tube bending system comprising:

• a bending machine that bends the processing target tube;
• and
• a tube delivery unit that receives the processing target tube and delivers the processing target tube to the bending machine, wherein the tube delivery unit includes:
• a shift-to-end mechanism that performs a shift-to-end manipulation on the processing target tube to move the two flare nuts to the end portion sides of the processing target tube such that one of the two flare nuts abuts one of the two ring-shaped projections and the other of the two flare nuts abuts the other of the two ring-shaped projections;
• and
• an inspection mechanism that captures an image of a positioned state in which, by the shift-to-end manipulation, the flare nuts are abutted against the ring-shaped projections, and detects an abnormality based on a result of the imaging of the processing target tube that is to be bent in the bending machine.