Тернопольский Национальный Технический Университет Имени Ивана Пулюя
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A method of manufacturing broad-sheet screw blanks, in which a toothed blank is cut off, which consists of grooves and tooth plates connected by grooved ridges, with subsequent forming a helical coil and its calibration for a pitch. Forming the helical spiral is carried out by asymmetric reduction of the grooved ridges on their width by means of rolls that form between them a wedge-shaped slit.
UAU201008776U2010-07-142010-07-14Method of manufacturing broad-strip screw blanks
UA56795U
(en)