ECONOMICAL
The most economical roll for plates from 15-20 mm thickness up to 80-100 mm, and it is recommended for limited production volumes where the operators’ skills are a must.
The MCO is called “double pinch” because it performs the pre-bending of both ends of the plate without removing the material from the machine (impossible on any single initial pinch, asymmetric design).
POWERFUL TORQUE TRANSMISSION
As the side rolls raise widely and drop to pre-bend the two edges, the large free access allows you to form a high stock bar through the rolls, compared to other roll designs.
The three rolls are powered with three independent hydraulic motors, directly splined on the roll shafts, providing the most powerful torque transmission, and ensuring excellent plate feeding without the risk of plate slipping.
EASE OF USE
Other plate roll manufacturers have only the top roll OR only the two side rolls powered, making it difficult to feed properly with thin, narrow or large diameter cylinders. The idle rolls can be powered but only on request, and with small and low powered auxiliary motors.
All three rolls are efficiently safety braked, automatically, and hydraulically instead of using low efficiency, consumable brake linings common to other brands.
3 ROLL MAV
A 3-roll variable-axis plate rolling machine operating principle is conceptually like that of a press-brake with the top roll pressing the plate between the two side rolls. However, a 3-roll bending machine is much more flexible and accurate, as it can vary the distance between the bottom rolls. The DAVI MAV allows for individual, horizontal movement of both side rolls and vertical movement of the top roll. Additionally, each one of the 3 rolls feature rotation drives and can be tilted in every direction for cone bending.
OPTIMUM TORQUE TRANSMISSION
Particularly on a 3-roll machine, it is of great importance to hold as much grip as possible on the plate. Featuring standard motorised top and side rolls, DAVI all-rolls-drive technology guarantees the optimum torque transmission to the plate and distribution between hydraulic motors.
As a result, no mechanical brakes need to be installed; Roll speed is automatically and hydraulically synchronised; no risk of plate slippage/falling during pre-bending and the plate can always be positioned at the tangent point to achieve the shortest flat end.
CONE FORMING
Forming cones is always a challenge. However, thanks to three fully tilting rolls we are able to make this very demanding operation as accurate and shift as possible. The DAVI pendular shaft-mounted gearbox configuration allows for stress-free tilting of the rolls up to 100 mm (4”) every 3 metres (10 feet) roll length.
GEOMETRICAL ACCURACY
In combination with the standard three motorised rolls the DAVI MAV guarantees unparalleled performance in continuous cone rolling.
However, in the case of thick plates, the DAVI MAV will exhibit extraordinary cone forming performance due to the Progressive Bumping Mode. In this mode and similar to a press-brake, the cone will be formed by bumping the plate step-by-step with geometrical accuracy guaranteed by the exact positioning of all three rolls.
What Our Customers Say
Ben Holz, Bendworx
"As Australia’s leading steel processor, our machinery’s quality and capability are essential, and we need the best possible after-sales and ongoing support - I’m delighted to say that Ottotech Services provide all that and more. Their knowledge, passion, and pride in their work are obvious and appreciated, and we cannot recommend them highly enough."
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