TPT November 2011

B ending & T ube M anipulation

CNC mandrel tube and pipe bender ERCOLINA’S GB90/GB100 NC/CNC model bender series is suitable for bending tube, pipe, square and rectangular profiles to centreline radius as tight as 1.5D with minimum deformation.

cost. The heavy certified GS500 spheroidal steel structure of the GB90/GB100SCNC provides a rigid platform, minimising work piece vibration throughout the bend cycle. Ercolina’s patented KST clam shell clamping system is available on both the GB90 and GB100 models; the FST finger clamp system is only available on the GB90 model. Handheld bending control is certified

class 3 safety and all electrical components are UL, CSA and CE approved. Machines are available with full CNC seven axis control. CML USA Ercolina – USA Fax: +1 563 391 7710

Features include interactive touch screen with Windows-based control, offering easy operator access to auto and manual operating modes and system diagnostics. All commands are available in multiple language capability. Programmable auto mandrel positioning allows the operator to optimise extraction for improved bend quality. Clamping, pressure die and boost movements are programmable with manual override for easy setup. A USB port on the control panel allows saving and recalling of program files. Precision digital encoders on each axis display both absolute (ABS) and incremental (INC) position in inch or metric values. Programmable tooling interference zone with simulation mode monitors position and eliminates work head collision. Control accepts YBC as well as XYZ input values. A high capacity hydraulic reservoir with auto power save feature reduces energy DAVI profile bending machines are normally utilised to bend beams the hard way and big pipes. The pipe cold bending process in particular is becoming more and more common. In fact DAVI recently sold several machines for this purpose, including two very large units able to bend up to 20" SCH.40. Pipes are utilised in many sectors. The most common is as fluid conveyor, mainly in oil and gas and other energetic fields. Lately pipes are increasingly used as structural element in civil engineering, due to their shape and their mechanical properties, which improves the structures resistance to torsion. The DAVI profile bending machines are able to bend beams and pipes without deformation. However, this is possible only if the load is smoothly and properly distributed on the part to be bent, otherwise the profile will twist and deform, losing its mechanical strength. Even if a machine has suitable power, it does not mean that it can bend a beam and/or a pipe: it is also necessary to

Email: info@ercolina-usa.com Website: www.ercolina-usa.com

The redesigned Giga Bender (Model GB90 shown), and the KST clamping system from the Model GB100

Cold bending process for pipes and beams

apply the correct load and guide the profile properly while it is fed in the machine. The machine’s design is the key to success. The roll position, the dies and the accessories are key elements to preserve the mechanical characteristics of the product. Davi invested in the design of these machines for many years, building an unsurpassed experience held by the skilled technical department, utilising state-of-the-art tools, such as 3D CAD and FEM analysis to achieve the optimum solution to any customer’s requirement. These results, parts bent without deformation, is not obtainable by simply increasing the size of the cylinders and of the machines, a solution adopted by many other machine manufacturers, who do not invest in developing new concepts. Davi, always a step ahead in the sheet metal forming business, now is proposing a wide range of machines dedicated to profile bending, with unique features. This

range guarantees bending all pipes with dimension between 1" and 32". The largest one can be bent only on the very large and heavy machine, with 20½" shafts. Davi – Italy

Email: sbruni@davi.com Website: www.davi.com

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N ovember 2011

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