Method for producing a jig for tubes having bent sections, and resulting jig

Abstract

The invention relates to a method for producing a jig (M) for the thermal forming and/or inspection of a tube (T) of neutral axis (x) and comprising a bent sections (c-c) connected by straight sections (d-d). The method consists in producing n individual jigs (M-M) each comprising a section of duct (') of planar neutral axis (χ) for guiding a tube segment formed by one of the n bent sections of the tube (T) and by a predetermined length of each of the straight sections (d-d) extending from said bent section, said predetermined length corresponding to either all or part of the length of the straight section; and assembling the n individual jigs (M-M) with the sections of guide duct in the continuation of one another and with a relative orientation of the individual jigs adapted to provide a relative orientation between the n planes defined by the neutral axis (χ) of the n sections of guide duct (′) that is identical to the relative orientation between the n bending planes (P, P, P) defined by the n bent sections (c-c) of the tube (T).