Other

Jury Lukich Semenenko

Viktor Afanasievich Zazimko

Mikhail Vladimirovich Babasov

Iraida Ivanovna Reidemeister

Zelik Ilich Pertsikov

Valery Konstantinovich Eremeev

Nikolai Vasilievich Tumanov

Mikhail Samuilovich Levin

Leonid Mikhailovich Varava

A device mounted on a drawbench stand, comprising a case with at least one drawing die or draw head, and stock guides arranged along the drawing-off axis on both sides of the die. Mounted intermediate of the stock guides is a stock straightening gear, including a housing accommodating at least one drive rotor whose axis coincides with the drawing-off axis. The rotor carries the case with the die set up eccentrically in bearings and non-rotatably about its axis. As the rotor rotates during the drawing-off operation, the drawing die transmits alternating bending forces to the stock, the guides acting as supports while the stock is bent.

Device for drawing-off and straightening cylindrically shaped stock

The invention relates to rolls of a skewed-roll machine. The rolls include a back-up roll and a pressure roll, having their axes extending at an angle to each other and at an angle to the trueing axis. The back-up roll has a biconcave profile, the portions of this roll, adjoining its ends, having the same hyperboloidal concavity with the degree of curvature providing for the engagement of the roll with the narrow central portion of the article being trued. The central portion of the back-up roll has hyperboloidal concavity with a degree of curvature to perform the trueing by bending the thickened end portion of the article being trued. The other roll, i.e. the pressure one, has a convexo-concave profile with similar hyperboloidal concave portions adjoining its ends, providing for the engagement of the roll with the thickened end of the article being trued, the roll further having a convex central portion as a projecting strip of a curvilinear profile, with a radial projection having a height ensuring a bending torque which, at the bending of the narrow central portion of the article being trued is short of the maximum permissible value of the bending torque but is not short of the minimum permissible bending torque required for trueing the thickened end of the article being trued, provided that the plastic torque of the bending resistance of the cross-section of the thickened end portion of the article being trued exceeds the plastic torque of the bending resistance of the cross-section of the narrow portion by not more than 10%.

Rolls of a skewed-roll machine for trueing cylindrical metal articles

A paired-roll straightening machine designed for straightening rolled shapes, round and shaped tubes and rolled section stock comprises a number of stationarily installed stands mounting pairs of driving shafts which form passes by their rolls, corresponding to the cross section of an article being straightened. The rolls form pairs with some of the pairs intended for propelling the article and the remaining pairs for bending the article. Each roll of the pairs intended for bending the article is provided with an individual drive for rocking in a given plane. In addition, each bending pair of rolls is provided with an additional drive for combine rocking of both rolls of the pair in a plane perpendicular to the given one. This allows for multiplanar elastoplastic bending of the article to be performed in the course of straightening.

Paired-roll straightening machine

Growing community of inventors

Dnipro, Ukraine

Jury Lukich Semenenko