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How Roll Forming Machines Work

Posted by Eng. Abdel Karim on

What is a roll forming machine?

A roll forming machine commonly known as metal forming machine makes some specific configurations out of long stripes of metal, mostly coiled steel. To bend the metal as necessary, the required cross-section profile of the piece is specifically designed for the machine. Apart from roll forming, these machines perform several metalworking duties that include material cutting and roll punching.

For the most part, roll forming machines, work in a continuous cycle. The material is inserted in the machine where it makes its way through the stages of each operation, ending with the formation of final product.

How a roll forming machine works

A metal is bended at the room temperature in roll forming machine using number of stations where fixed rollers guide the metal and make necessary bends. Each set of rollers bend the metal more than the previous station, as the strip of the metal travels through the roll forming machine.

This enhanced method of bending the metal ensures that the correct cross-sectional configuration is achieved while maintaining cross-sectional area of the work piece. Roll forming machines become a good choice for manufacturing large quantities or very long pieces as the operating speed is between 30 to 600 feet per minute.

If any specific part requires precise finishing work, roll forming machines are good at creating it. In most of the cases, the finished product features an excellent finish and very fine detail, depending upon the material being shaped. Engineering machines for sale are available for this purpose.

The process and basics of roll forming

The basic roll forming machine has a line that can be separated into four major parts. The initial first part is the entry section, where the material is loaded. The material here is inserted in the form of sheet or fed from a continuous coil. The next section is the station rollers where the actual roll forming takes place. The metal shapes at the location where it makes it way through the process. Station rollers not only shape the metal but are the main driving force of the machine.

The cut off press is the next section of a basic roll forming machine. Here a metal is cut to a pre-determined length. Flying die cut off techniques are common here due to the speed at which the machine works and a fact that it is a continuous working machine. The exit station is the final section, where the finished part exits the machine onto a roller conveyor or table and is manually moved.


Roll forming is an adjustable process. It is also applicable to projects of varying time duration. Additionally, roll forming machine results in a precise uniform part.

  • roll forming machine
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