Thus, with this paradigm shift, manufacturers are now asking: “which is the ideal positioner for my part?”
The answer is never straightforward, but we can say that the first thing to do is to analyze the variety and type of production:
- How many models do we have?
- Do we want to handle simple cylindrical structures like wind towers? Or do we want to handle tanks or even more complex tubular geometries such as jackets for monopiles or for oil platforms?
- What are the processes where these systems will be integrated? Welding, painting, pickling, ...?
- WIND TOWERS
Since the wind towers’ surface is mostly smooth, turning rolls (also known as roller beds) are usually the best option. Loading and unloading is easy, and setup is somewhat short.
There are several types of turning rolls:
- Fixed Turning Rolls
The diameter adjustment is manual, so fixed turning rolls are ideal for when we work always with the same model. It is also usually a more economic option.
- Self-Aligning Turning Rolls
The self-aligning turning rolls option has an automatic adjustment to the diameter of the structure. The part's own weight and dimensions force the rolls to move and accommodate the tower which ends up in an optimal centered support position.
- Fit-Up Turning Rolls
In this case, through a hydraulic system, it is also possible to adjust the height of the fit-up turning rolls. This is especially used when we have two shells and we want to weld them together. For this operation we must guarantee the best possible contact for the welding and, to do so, it is often necessary to also adjust the height.
Important information:
- When the turning rolls are integrated in more invasive processes (for example painting or metallization), some modifications needs to be made, in order to guarantee, not only the functioning of the equipment itself, but, above all, the safety of the workstation.
- The turning rolls can be motorized in translation to move them within the factory (with the use of rails).
Despite many manufacturers use traditional turning rolls for surface treatment, Motofil has developed special positioners for painting. In these positioners, the handling of the part is done without external contact, which results in a more effective painting process, with less need for corrections.