FIELD: technological processes, metal working.
SUBSTANCE: invention is related to plastic metal working and may be used for bending of shaped tubes. Billet is bent successively by sections in bending device. Besides, prior to bending, two opposite sides of billet are rolled inside to specified depth and configuration. Then its bend end is flattened along unrolled sides, is inserted into bending device slot, and bending is carried out by unrolled sides. For bending device is used that comprises template with working surface and slot for billet installation, auxiliary templates with working surfaces, bending element on axis. Template is fixed on faceplate having openings for serial installation of auxiliary templates one after another. Bending element is fixed relative to axis against rotation by fixator and is installed above faceplate with the possibility of plank adjustment in longitudinal direction in guide fixed on bed plate. Puncheon-fixator is mounted into wall of template groove with sharp edge for billet fixation.
EFFECT: higher efficiency and quality of produced items.
2 cl, 18 dwg, 1 ex
