| 摘要 |
PURPOSE: To provide a tube bending device capable of bending a tube up to a required bending angle by a relative displacement in the angular direction between a mandrel and a forming means. CONSTITUTION: A tube bending device 10 comprises a mandrel having a bending groove 24 arranged extending around a bending axis line A, a forming means, a means 76 which relatively displace the said matters, and a means to restrict the displacement at bending operation, and further comprises a plurality of abutment surfaces 104-110 having the means of restricting the displacement located on the mandrel or the forming means and angularly spaced with regard to the bending axis line and a stop member 114 which is located on the other of the mandrel or the forming means and selectively adjustable to engage any one of the abutment surfaces.
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