Tube bending machine - Electric swing

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E-Turn swing tube bending machine


Fully electric in-process right and left tube bending machine, with 3D graphic visual programming (VGP3D) Some features of E-TURN fully electric tube bending machine: No mechanical adjustment is needed In-process right and left bending, with fixed and variable radius Reduced time for programming and change-over Enhanced controllability and repeatability Increased productivity (by even 20% compared to hydro-electric machines) Widest flexibility, due to the reduced dimension of the bending head and of the free bending and variable radius positioning Increased feasibility of more complex structures Tools holders designed for the fully interchangeability with existing BLM machines Integrated machine load and load 3D interactive, graphic programming with touch screen (VGP3D) The E-Turn bending machine is available in four maximum tube OD (outside diameter) capacities (30mm, 35mm, 40mm and 52mm), bending machine versions: ET30 tube bending machine - maximum tube O.D. capacity from 6 to 302mm ET35* tube bending machine - maximum tube O.D. capacity from 6 to 352mm ET40* tube bending machine - maximum tube O.D. capacity from 6 to 402mm ET52* tube bending machine - maximum tube O.D. capacity from 6 to 522mm E-TURN, fully electric bending machine* with right and left in-process bending. E-TURN tube bending machine is managed by a powerful CNC with 3D Visual Graphic Programming (VGP) controlling and moving its 12 axes. E-TURN tube bending machinewidens the range of electric machines offered by BLM (E-BEND76 tube bender and TUBEFORM tube end former) to meet demands for the bending of small-medium sized tubes typically used for complex car components, hydraulic pipes, motorcycle and furniture. E-TURN tube bending machine has low power consumptions, up to 1/10 compared to traditional technologies since power is required only when axes move. "Office" noise level and, clean technology and low-level maintenance procedures. With E-TURN tube bending machine, BLM SPA has created a new market reference for high added value and high quality tube bending. BLM designed a swing tube bending machine that can bend both left and right-hand bends in the same cycle on the same tube. The BLM Swing Tube bending machine combines two bend heads on one machine, which can be rotated through 180 degrees to select the required bend head. Each bend head can also accept up to four sets of tooling for multi-radius components or to combine conventional draw bending with variable radius bending that allows for curves and sweeps to be generated within the component. With this function and flexibility on one machine. E-Turn all-electric CNC tube bending machine - has been designed specifically for the bending of small to medium sized tubes, typically used for complex car and motorcycle components, hydraulic pipes and furniture. Because the complete head can rotate through 180 deg, the E-Turn is capable of left- and right-hand bending in automatic cycle . Precise control of the E-Turn's 12-axis movements, courtesy of BLM's Visual Graphic Programming (VGP 3D) software, significantly reduces set-up times because all parameters are stored and can be re-called without further mechanical adjustment being necessary. Complex components requiring radii of less than 1 x diameter can be produced using the 'bend boost' device, which can have its power modulated during the bending process to avoid unsightly stress marks on high value components. The electric axes automatically adjust position, which enhances accuracy and repeatability, and components are not only produced 'right first time', they are repeatable batch to batch without undue reliance on operator expertise. This multi-tool stack tube bender - up to eight different bend tools can be mounted at any one time - brings with it fewer bend tool changes and less downtime. All-electric technology contributes a 20-50% productivity increase when compared with 'traditional' powered models of bending machine.

Electrically-driven machines to perform heavy machining operations can be found increasingly more in the machine tool sector in place of the classical hydraulically driven ones. Even the tube bending sector is experiencing this irreversible process.

In the “all-electric” tube bending machine that have been developed by the BLM GROUP, the position and strength at which tubes and tools have to be manipulated is controlled by electric motors and ball screws.

The machine's numerical control therefore goes from the typical 3 or 4 axes to a system that is able to control from 9 to 15 electrical servo axes, both in position and torque.

The tube bending CNC machine is able to handle axis synchronism and interpolation in order to perform complicated and very accurate set-ups.

Moreover, the torque/force control allows to compensate for the variations in the axis position given by errors in the pipe geometry of elongation of the material.

Contrary to a hydraulic pump (which is always on, no matter what the cycle condition is), electric motors absorb energy only when they are actually being used, thereby reducing consumption up to 1/10.

In addition, as “all-electric” tube bending machines do not use mineral oils,they are no added management and disposal expenses. Servo motors are silent and eliminate the problems of noise.

In an “all-electric” tube bending machine all this means that there are reduced downtimes and increased process repeatability.

BLM “all-electric” tube bending machines are equipped with a Boost features to push the carriage to produce power exceeding 5,000 kg thereby improving roundness as well as reducing the wall thickening on the outside edge of the tube.

The Boost also helps to reduce any pipe movements in the clamp jaws and reduces the pressure with a significant benefit on the surface quality of the finished tube. The power can be adjusted on the basis of the final quality of the product.

Similarly, the clamp and the pressure die power on the tube can also be varied by the operator according to the geometry and type of material being worked.