METHOD OF MANUFACTURING PIPE WITH BOTTOM PORTION AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2008 - IPC B21D41/04 B21D22/14 B21D51/24 

FIELD: technological processes.

SUBSTANCE: before deformation the stock is placed onto work holder, side surface of which is conjugated to the butt along radius, with projection of its end portion above work holder butt. At that metal volume of projected stock end portion corresponds to the metal volume of finished part bottom portion. The lever with forming tool is rotated relative to axis, which is located at a certain distance from the working surface of forming tool. Device for method implementation contains forming tool, which is located at the lever, installed with the possibility of rotation relative to axis, which is perpendicular to stock axis, work holder, side surface of which is conjugated to the butt along radius, which corresponds to the radius of finished part internal side surface conjugation with its bottom portion. Lever is installed on the holder with the possibility of rotation relative to axis, which is located at a certain distance from the working surface of forming tool, which corresponds to the radius of finished part internal side surface conjugation with its bottom portion.

EFFECT: capabilities are expanded.

2 cl, 4 dwg