Rolling tube formation

Technology . Complex forms at low tool costs

The question about efficiency always requires new responses. Only in this way can the continuously increasing challenges of demanding systems ensure profitability. This is exactly where rolling tube forming offers special options.

It remains an exciting subject. It has been mentioned in t time(s) more than once for a good reason. This time, it is entirely in the limelight. The goal of rolling technology is to create complex forms with minimal tool costs. All of our t form SRM systems use electrical servo drives for this purpose. The simply control enable functions of the various axes to be activated overlapping. This enables the design of nearly any formed geometry. Another important feature of our rolling technology is the mapping of completely different processes with just one tool: the rolling head. This nearly completely eliminates tool wear. Lubricants that are used during the forming process are also able to be reduced to a minimum.

Highly tensile materials and shapes with flanges Essentially, our SRM systems are

able to execute different functions independent of the tool. For very demanding forming with highly tensile materials, a closed rolling head is available, which completely supports the forming rollers. If a very compact geometry is being formed, for example which does not feature any space in the axial direction, then three rollers are used to form, which are mounted in an open structure. This makes it possible to execute the rolling geometry directly on the tube/flange connection.

It is also possible to use the same roller head to roll threads or to attached knurls on components. Always with the same form, naturally. Follow-up cuts on curved components may always be made chip-free and nearly burr-free with rolling technology.

Practical examples

An additional roller head enables rolling and cutting processes via two rollers. In this case, a roller is positioned as a support on the outside or the inside of the tube. The counter-roller is applied to add the form. This process makes it possible to form complicated geometries nearly without any span lengths.

Forming and cutting

An interior support or forming roller may be used starting at a tube interior diameter of 12 mm. In this case, the most diverse tool pairings may be used, for example to make forming and cutting at the same time possible. This technology has the additional advantage that it produces excellent surface properties during forming. Often, cost-intensive form spanning pieces are not needed for previously bent tubes. In this case, the stresses that are transferred to the tube during the rolling process are extremely low.

If the rolling technology reaches its limit for special forms, then previously compressed tubes may naturally be fed into the rolling process. The rolling machines is also combinable with a heading machine. These transfluid® combination machines securely execute even the most extreme forms.