CLAMPING DEVICE Russian patent published in 2005 - IPC

FIELD: machine engineering, possibly part clamping units and autonomous power drives in metal cutting machine tools.

SUBSTANCE: device includes cylinder, lid, screw and piston with threaded rod secured to it. Device also includes additional piston embracing cylinder and movable mounted on screw. Thread of said screw engages with lid and it may perform rotation relative to additional piston. Rod is movably mounted on screw and roller is mounted on said screw. Thread of rod has two different lead angles according to condition of its engagement with roller at first by means of thread with small lead angle and then by means of thread with large lead angle.

EFFECT: improved design having reduced outer size and enhanced operational efficiency.

1 dwg