Automatic light steel channel frame roll forming machine,,  fully automatic, computer operated rollforming machine for different open profiles (purlines), such as U-, C-, Z- and  diverse widths and forms. The width adjustment of the rolls for profiling of purlins with diverse widths proceeds infinitely, using just one profilling unit. Cassette type design implies the production of different profile forms by changing the cassettes with their different profiling units. Through the integrated flying punching machine required assembly holes can be made during the production process.