TPT September 2015

Technology News

Rolling tube forming by transfluid THE demands for tube processing are increasing as geometries become increasingly complex and materials become ever stronger yet lighter. At the same time there are more demands for efficiency across all sectors. Rolling tube forming by transfluid offers a solution as it is a process that opens up special opportunities for forming and reduces the use of tools to a minimum. role, allowing the rolling or separating process across two rollers. One roller is positioned as support on the inside or outside of the tube while the counter roller delivers the form. transfluid Maschinenbau GmbH – Germany Website: www.tube-processing-machines.com C O N T R A S T

Rolling technology displays its particular strengths most clearly if forming is to be carried out on tubes that have already been axially pre-formed, if sharp-edged contours need to be created for sealing elements or if perfect surfaces are required. For tool-independent tube forming and for the creation of almost freely formed geometries all ‘t form’ bead rolling machines from transfluid have a servo- electric drive and an easily operated CNC control system, if required. This allows the functions of different axes to be moved in an overlapping fashion. As all the setting parameters are stored there are no complex adjustments and this saves valuable time. The forming process is possible both from outside to inside and from inside to outside. A further advantage of rolling tube forming is that even completely different geometries can be formed with a single tool, a clamping jaw and the rolling head. Tool wear is almost totally ruled out in a rolling process. The lubricants that are necessary in the forming process can also be reduced to a minimum. If very demanding forming is necessary on high-strength materials then a closed rolling head is used. The forming rollers are completely supported within this. The forming of highly complex geometries without space in the axial direction is carried out using three rollers that are included in an open structure. This means that the roller geometry can be carried out directly on a tube/flange connection. It is also possible to roll threads or add edge designs with the same roller head and the corresponding rollers, with or without forming, depending on requirements. Trimming of already-bent components can also be realised by rolling tube forming without cutting and almost without burrs. If complex geometries need to be formed almost without clamping length, then a roller head takes over this

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S eptember 2015