The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 29, 1980
Filed:
Jun. 07, 1978
Vladimir N Vydrin, both ofChelyabinsk, SU;
Evgeny N Berezin, both ofChelyabinsk, SU;
Oleg I Tischenko, Temirtau, SU;
Vladimir G Dremin, Chelyabinsk, SU;
Grigory I Koval, Chelyabinsk, SU;
Other;
Abstract
The present invention relates to plastic working of metals and the reducing of a workpiece along its axis by a pair of shaped rolls with formation in the workpiece of a transitional length whose cross section gradually changes from a starting one to several cross sections of finished bars interconnected by webs. The reduction of the workpiece is alternated with its axial displacement through one feed step, whereas at the end of a transitional length adjacent bars are displaced one with respect to another in opposite directions perpendicularly to webs so as to separate the bars. Mill rolls used with the method have several grooves of a variable cross section which form passes for rolling bars. The profile of each groove in transversal (with respect to mill roll axis of rotation) cross section is formed of two mutually conjugated arcs successively coming into contact with the workpiece. The grooves have an arc for reducing the workpiece and an arc for dividing bars one from another. The centers of curvature of the arcs are located at different eccentricities with respect to the mill roll axis of rotation, with the directions of eccentricity alternating in adjacent grooves.