DEVICE FOR ROTATIONAL DRAW OF THIN WALL SMALL PARTS Russian patent published in 2015 - IPC B21D22/16 

FIELD: machine building.

SUBSTANCE: device contains casing with pole, two adjustable cartridges with clamping elements in cages and mandrel secured in the chuck of the machine front head. Casing is made in form of the bushing with creation of two cavities separated by partition. In various casing cavities the adjustable cartridges with clamping elements are installed, they are held in them by two compression nuts with thread, on which vernier scales with opposite count are applied. In each cartridge one of the support rings is made floating and supporting by the appropriate surfaces of the nut and casing partition via the thrust bearings. To support the clamping elements in cartridges the central clamp is installed. A set of balls moving on surfaces of hardened discs and movable support rings is used as the thrust bearings. The cages are made composite in form of non-detachable disks with preliminary flanged holes.

EFFECT: invention increases quality of the produced parts and facilitates the process.

5 cl, 4 dwg