MANDREL FOR MANUFACTURE OF BENT TUBULAR PRODUCTS OF COMPOSITE MATERIALS Russian patent published in 2002 - IPC

FIELD: equipment for manufacture of bent tubular products of composite materials. SUBSTANCE: the mandrel has annular tapered disks and is provided with rectilinear tubular sections with through longitudinal holes at the ends. On one end the sections are completed with flanges with covers provided with through holes, hinge-fastened journals and means for tensioning of flexible members. The end tapered disks are installed between the rectilinear tubular sections and joined to them and to one another with the aid of bosses made on the adjacent ends on one side, on the other side- with the aid of cavities corresponding to them. The tapered disks are joined to one another by means of flexible members pulled through the through holes and fastened on the covers by the means for tensioning. EFFECT: manufacture of branch pipes with different bend angles. 3 cl, 4 dwg