TPT July 2014

Technology News

Lifting table for tube bending machines from Germany

run-in beforehand. The bending tools may be changed particularly quickly; the pressure die is simply hung into the T-grooves, the clamp dies slid into the circular guide, and the tie rods may be swivelled after the locking pins have been released. The concept may be adapted to existing tool systems. The fact that maintenance-intensive gas-pressure springs are no longer needed to support the bending head and ball-bearing spindles means that the 80CNC-EMR reduces main- tenance requirements, while the machine’s entirely new enclosure and the concept that uses a separate switch cabinet also allow optimum access for maintenance. Lang Tube Tec GmbH – Germany Fax: +49 6251 98908 27 Email: info@lang-tubetec.com Website: www.lang-tubetec.com

work flows because all axes are moved simultaneously. The user interface is so intuitive that the Lang Tube Tec’s CNC-E series may even be operated by people without previous CNC training. Because the clamping and feeding forces are torque- controlled, the machine automatically compensates for fluctuations in tube batches. A high-performance simulation program allows the tubes’ bending properties to be checked in advance so that any necessary corrections may be made before they are worked. It also allows binary-coded 3D models to be imported to prevent any input errors. The tools and bending programs used with the 80CNC-EMR may be programmed quickly. All parameters are stored in the memory, so the machine is always ready for use and does not have to be

LANG Tube Tec has launched the new 80CNC-EMR, described as the world’s first fully electrically-powered automatic bending machine to use a lifting table that creates vertical shift of collet rotation and mandrel retract at the same time. The integrated booster for applying additional pressure on the pipe while it is being bent is also driven on the lifting table during the same stage of work. Other features of the CNC-E series include the drive-click system for storing motor parameters, and the entirely new control with intuitive graphic user interface and torque-controlled tube clamping. “The new machine concept will enable our customers to break entirely new ground in regard to machine rigidity and machining quality,” said head of sales Sabine Neff. “It will also help considerably reduce set-up times, which will in turn increase productivity.” The technological advances mean that it is suited to the automotive and commercial vehicle sectors, as well as in the fields of aerospace and shipbuilding. Lang Tube Tec states that, compared with the otherwise conventional methods where collet rotation and mandrel retract shifting are effected separately, its innovation realises the benefits of greater rigidity, 100 per cent synchronicity of both units’ movement and the advantage that the high booster forces may be applied directly and centrally. “Our new concept means that we’re able to prevent the high levels of torque from affecting the sensitive ball bearing spindles,” explained service and project manager Björn Brunner. The lifting table concept also offers benefits over conventional machining processes where the bending head is moved vertically. Even with increasing machine sizes, users will still be able to position the tubes at the ergonomically optimised operating height of 1,150mm and carry out tool changes without straining their backs. Both minimise set- up times and ensure that the machine can be taken quickly into operation so that jobs can be completed quickly. The new machine control with the Siemens Simotion CNC also stands for the speedy and safe execution of

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J uly 2014