Round bar straightener-polisher machine of the type which has a pair of rotary rollers the lower of which is fixed while the upper of which moves at will in a vertical direction so as to determine the distance between the rollers, which distance will be occupied by the bar to be treated. On each side of the bar are corresponding lateral guides, also movable at will according to the gage of the bar, in order to avoid horizontal movement thereof. The movement of the upper roller and that of the lateral guides is controlled by a single control, for which two symetrically arranged tables which solidly support the corresponding lateral guides, turn with the center in its lower part, this turning being caused by movement of the frame of the upper roller, which transmits its movement to two yokes, one for each table and guide, each yoke being linked to a lever solidly connected to a horizontal shaft, which has respective heel-pieces or projections at its opposite ends, articulately coupled to corresponding lugs, fixed to each table. At the anterior end of one of the guides and at the posterior end of the other guide, successive small rollers, whose active areas are always in the same plane as the edges facing the lateral guides, are provided.
展开▼
