ROLLING STAND OF THREE-ROLL SCREW ROLLING MILL Russian patent published in 2001 - IPC

FIELD: rolled tube production. SUBSTANCE: rolling stand of three-roll screw rolling mill includes frame, drums arranged in frame, mutually spaced by 120 degrees and carrying rolling rolls; mechanism for mounting them, holders with guides placed between roll pairs; mechanism for moving them mounted in turnings of frame and jointly connected with guide holders. Mechanism for moving upper guides and their holders are provided with electromechanical drive units. Mechanism for moving lower guide includes shaft, adjustable stop engaging with shaft through slide block and two-support beam joined with holder of lower guide by means of ball bearing and having rocking motion drive with power cylinder. One support of beam is joined with frame; its other support is joined with shaft. Stand provides enhanced efficiency due to elimination of manual operations and lowered time period for maintenance and repairing procedures, namely reduced time period for radial adjustment of guides. EFFECT: improved design, enhanced efficiency. 3 dwg