RONIKolli7 is an automated feasibility analysis for tubes and profiles that are processed on CNC bending machines. It is the result of 25 years of continuous improvement and refinement.

With the RONIKolli7 software framework 3R offers not only a computerized feasibility analysis with generation of CNC-data, but also a construction platform for tube geometries, for processing on modern tube bending machines. For precise monitoring and support of the fabrication process the entire bending operation is simulated and tested for collisions.

RONIKolli7 supports both simple mandrel bending machines as well as modern right- and left-bending machines with multiple bending heads and levels. In addition to standard rotary draw bending RONIKolli7 also simulates roller and induction bending

RONIKolli7 is available in several languages, including English, French, Japanese, Swedish, Dutch and Russian.


Feature overview

  • Tube bending simulation with collision and interference check
  • Simulation of machines with multiple bending heads and levels
  • Support of mandrel, roller, and induction bending machines
  • Generation of CNC-data and transfer to the bending machines
  • Import of tube geometries from third-party systems
  • Automatic testing of multiple pipelines on different machines
  • Bending with flanges


RONIKolli7 simulates the bending process of a tube geometry on one or more virtual bending machines. In case of interference or collision during the bending sequence the software independently searches for solutions. In addition the user can intervene manually at any time and adjust the bending process. The search for a suitable bending sequence is dependent on the machine type. The more complex the bending machine is (e.g. right / left bending machines with multiple heads and levels),the more options are taken into account for testing by RONIKolli7.


Among others the following options are tested:

  • Reversed rotation direction
  • Addition of a correction feed
  • Reversed bending direction
  • Change of bending head
  • Change of bending level
  • Change of bending sequence (dependent on machine type)

Machine Editor and Tool Editor

With the Machine Editor users can easily create a virtual model of their machine and its environment.
The Tool Editor creates a virtual image of the bending tools, which is used with the model of the bending machine in the simulation.

Material Manager

The Material Manager administers the material-specific properties of the tubes, bars and profiles. Especially in unit production of tubes it is essential to achieve a precise bending result on first try.Using the Material Manager empirically derived data can be collected and recorded easily. The recorded information servesthe fitting accuracy of the pipelines to be bent, and the generation of CNC-data.

Generation of CNC-data

RONIKolli7 considers all relevant machine-, tool-, and material-specific parameters when generating CNC-data.
RONIKolli7 calculates the precise cutting length, considering the tube’s springback, the reduction in traction lengths caused by overbending and the bend’s radius increase, as well as the material stretching inside the bend.

Cycle Times

For each tube geometry RONIKolli7 determines a machine-dependent theoretical cycle time. This way the speed and efficiency of several machines can be compared directly.


A continuously growing number of interfaces enables the import and export of data. These interfaces allow the control of CNC bending machines as well as the import of tube geometries from third-party systems, like measuring systems or CAD-platforms.

Automatic testing of multiple pipelines on different machines

The RONIKolli7 framework can automatically test a large number of pipes on different machines and tool combinations. For every pipe RONIKolli7 automatically finds the right machine and tool. The entire simulation of all pipelines can be evaluated statistically.

Bending with flanges

Some bending machines are capable of bending pipes with flanges. Depending on the clamping device RONIKolli7 calculates the relative rotation of the flanges against each other (flange welding machine) as well as the rotation before the first bend in order to ensure the correct position of the first flange after bending has been completed.