HELICALLY CORRUGATED HOLLOW PROFILE AND METHOD AND DEVICE FOR ITS PRODUCTION

摘要

The hollow shape profile (1) with at least single-threaded helix along whose inside and outside surface is executed at least single-threaded helix with steep lead while shapes of its inside and outside sections are mutually derived. The method of the production of hollow shape profile (1) executed by the drawing process that consists in the shape profile (1) drawing by the rectilinear motion of the drawing truck through at least one form drawing die (7) and with at least one form broach (2), both performing positive rotary motion around the drawn profile longitudinal axis. The principle of the form drawing die (7) or form broach (2) to the executing of the production method said shape profile (1) consists in fact, that either drawing die (7) and form broach (2) consist from at least one-part body equipped along its periphery with at least one convex or concave blade (6). The said blade (6) can be formed as at least single-threaded helix.