FIELD: plastic working of metals.
SUBSTANCE: apparatus includes table; mandrel mounted on table; hydraulic cylinder for bending arranged on the same axis as mandrel and joined by means of tie rods with brackets mounted with possibility of rotation around axes normal relative to plane of table; rotatably mounted on bracket hydraulic cylinders for stretching blank. Said hydraulic cylinders for stretching are provided with gripping mechanisms. Additional brackets are mounted in plane parallel relative to surface of table. Said brackets are mounted with possibility of rotation around common axis normal relative to table plane, passing through axis of hydraulic cylinder for bending and joined through additional tie rods with hydraulic cylinder for bending. On additional brackets hydraulic cylinders for pressing down are mounted. On rods of hydraulic cylinders for pressing down bending rollers are mounted.
EFFECT: lowered springing value of blank material during deformation process.
2 dwg
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