US 3,979,937 AGranted

Paired-roll straightening machine

OwnerJury Lukich Semenenko, Nikolai Vasilievich Tumanovinventors

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Abstract

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.

Claims6

Dependent claims

A paired-roll straightening machine comprising:

a bed frame;
stands stationarily installed on the bed frame in a row one after another;
two driving shafts mounted in each of the stands one above the other;
a roll positioned on each of the shafts so that the rolls of the shafts of one stand form a pair of rolls, while the rolls in each pair are installed one above the other to form a pass whose cross section corresponds to the cross section of an article being straightened, propelled through the passes of the roll pairs of all stands;
some of the pairs of rolls are adapted for propelling the article;
the remaining pairs of rolls are adapted for bending the article in at least one given plane during straightening;
a drive provided for each roll of the bending pairs so that each roll of the bending pair is rocking in the given plane for bending the article during straightening;
and means for rotating each of the shafts of the stands.

5 more elements

Dependencies are inferred from the claim text.