Verfahren zur Herstellung einer Profilschiene

摘要

The support rail profile for the vehicle seat is formed from flat metal strip (1) which first has the edges rolled up into lips (4) by shaped rollers. The tops of the lips are then shaped into gear racks by a profiled roller (8). Any lateral spreading of the lip thickness is rolled to its original thickness prior to rolling into the completed C-shape. For a high quality toothed profile the tooth profile is re-applied after the third rolling process, to restore the lip thickness. The pairs of rollers are synchronised for optimum rolling quality.