Тернопольский Национальный Технический Университет Имени Ивана Пулюя
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Shaping Of Tube Ends By Bending Or Straightening
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Abstract
A method of manufacturing corrugated screw blanks, at which at first U-shaped depressions are formed on a tape at an angle to the longitudinal axis of tape to form a corrugated tape. Then forming a helical spiral is carried out followed by stretching it for a pitch. Forming the helical spiral is carried out by asymmetric reduction of the corrugated tape on its width by means of rolls that form between them a wedge-shaped slit. In the case only deformation is performed of the external part of corrugated tape relative to the center of curvature, which does not exceed 95 % of its initial width.
UAU201008315U2010-07-052010-07-05Method of manufacturing corrugated screw blanks
UA56734U
(en)