MECHANISM FOR STRETCHING OF CIRCULAR SECTION BAR WITH SIMULTANEOUSE ROTATION AROUND LONGITUDINAL AXIS IN MACHINES OF NONSTOP METALS AND ALLOYS MELDINGS Russian patent published in 2008 - IPC B22D11/128 

FIELD: metallurgy.

SUBSTANCE: mechanism of bar stretching contains rotation driving and clamping rollers. The axis of rollers rotation are parallel situated by generates of radial surface of round bar, and their working areas made of the turns with non-typical cylinder craving with rectangular or trapezoid sideview. The screw cooperation of rollers work surfaces with the bar during line contact on generates of their cylindrical surfaces provides the forward storing-up product movement and its rotation (during faltering stretching - barring) from single driving gear, that simplifies its construction.

EFFECT: it is prevented the deformation of thin-walled hollow bars.

2 dwg