ANTI-VIBRATION PLUG FOR MACHINING TUBES AND METHOD FOR PLACING SAID PLUG INSIDE A TUBE Russian patent published in 2018 - IPC B23G1/52 

FIELD: instrument engineering.

SUBSTANCE: plug contains central body (2) with levers (3), which open radially outwards, intended to come into contact with the inner part of pipe (1), blocking screen (4), provided between central body (2) and levers (3), which blocks the inner part of pipe (1) in the open position of levers (3). Central body (2) has axial hole (5), in which piston (6) is located, which acts with the possibility of moving to peripheral part (8), which surrounds central body (2), and causes the movement of levers (3), peripheral part (8) being subjected to a pushing force, elastic element (10) applied in the direction, opposite to the direction in which piston (6) pushes.

EFFECT: automatic adaptation of the plug to pipes with different internal diameters is achieved.

5 cl, 6 dwg