With the eMOB 52 2 Bend, which features our powerful Premium Linear System, AMOB provides its customers with uncompromising high-end tube bending technology. Most notably, this means maximum positioning accuracy when feeding the workpiece and reproducibility of bending shapes, combined with optimum machine availability and system efficiency. From a drive technology perspective, the focus is on the technical properties of gearboxes and linear systems, such as reduced backlash, high torsional and tilting rigidity as well as high dynamics for short cycle times. The goal was to achieve optimum performance and availability of bending processes combined with maximum dimensional accuracy of the bent tubes. 

As one of the world’s leading manufacturers of machines for the metalworking industry, the Portuguese company based in Porto covers the complete application spectrum – from simple, manually operated machines to fully electric CNC systems for highly complex machining processes.

Close cooperation between AMOB and WITTENSTEIN alpha

The engineers at AMOB called upon the drive technology experts at the Iberian subsidiary of WITTENSTEIN alpha at an early stage in the design phase to establish the process for enhancing the eMOB 52 2 Bend. This is a fully electric 11-axis tube bending machine in which the different bending directions and radii are controlled by means of a rotating head and which is capable of processing tubes with diameters ranging from 5 mm to 52 mm. During the course of the cooperation, two objectives were defined:  The first was to further enhance the overall system rigidity, maximum processing speed, positioning accuracy when feeding the workpiece and the reproducibility of bending shapes compared to the current performance levels. The second was to simplify the design of the machine structure using a modified drive concept in the area of the pusher and booster axes. Thanks to the Premium Linear System, AMOB
was able to achieve both objectives.

The combination of the Premium Linear System components – RP⁺ planetary gearbox and innovative INIRA^® rack – ensures significantly improved, very high system rigidity along the entire length of the main axes in the new generation of the eMOB 52 2 Bend tube bending machine. With fewer drive components than before and requiring less assembly and adjustment work, the Premium Linear System was able to achieve best results in terms of speed, dynamics and precision. This shows in a more balanced machine characteristics overall. In addition, loss movements were significantly reduced, allowing the machine to be controlled reliably even with short cycles or fast movements. The solution is also economical, as the drive components offer a high level of quality for a fair market price.

AMOB is extremely happy with the cooperation and intensive exchange with WITTENSTEIN alpha. In particular, the team from AMOB praised the high levels of experience with regard to implementation and project management while also complementing the technical consulting capabilities. The use of cymex^® 5 was valuabale in increasing the overall system efficiency. It meant that the correct gearbox sizing was determined quickly, which made the whole process much quicker and easier. Since this successful project resulted in better machine output results, AMOB uses gearboxes from WITTENSTEIN alpha from the alpha Value Line and the alpha Advanced Line in other axes as well.