FIELD: machine building.
SUBSTANCE: mandrel device contains forming surface in form of pressure enclosure having shaped of a rotation body and sector planks. The sector planks are installed with possibility to change the cone angle relatively to the axis of rotation of the generatrix. The sector planks are linked hingedly by means of the piston rods with cross slide installed with the possibility of reciprocative movement relatively to the enclosure geometrical axis. The sector planks are made dismountable to change the enclosure profile.
EFFECT: decreased time for enclosure dismounting from the mandrel.
3 dwg
