TPT March 2010

T echnology U pdate

Tube forming performance for safety parts production

Cut pipes in orbital welding quality

TUBE and Pipe bending and forming machinery expert Felss Burger GmbH, Germany, recently delivered another FU01- 50 tube-forming machine to a customer in the USA. The turn key solution has 16 NC controlled stations feeding six metre tubes Ø 22x2mm, cuts pieces to 200mm length, chamfers, forms, stamps, punches, checks, measures and sorts. The system produces a highly safety critical tube element for use in seat belt restrainers. With a patented process the wall of the tube is first partly thickened. This allows the tube to be widened and the resulting part maintains a wall thickness of 2mm throughout the product. The tube widening is done in several steps as the tube diameter is increased and then formed to a characteristic asymmetric “nose”. Keeping the wall thickness constant is key for this product due to the fact that in case of a car accident an explosive propellant will discharge a pressure of well above 300 bar (4,500 PSI) which activates the seat belt restrainer without destroying

the tube. The installed machine’s robust and controlled processes allow more uptime and more output. This highly productive unit achieves output capacity up to 20 parts per minute in a 7/7 mode. All processes are precisely controlled and run with little operator attention allowing cost effective multi-machine operations. Felss Burger has installed its online machinery access, which allows software to be updated, 24hour/day trouble shooting as well as visual check capabilities via webcam. In combination with Felss Burger’s tube bending units, such as FB61-21, tubes can also be precisely bent three dimensionally. Additionally, in case of dynamically changing pressures in a tube, Autofrettage unit FA02-83 can be added to significantly increase fatigue strength of a tube. Felss Burger GmbH – Germany Fax: +49 83619 20610 Email: info@felss-burger.com Website: www.felss-burger.com The main feature of the machines is sturdiness that, together with the use of high quality component parts (Siemens motors, PLC and operator panels, Bosch- Rexroth hydraulic components, and Moog pumps) ensures reliability. Another feature of the machines is the ‘follow-on’ jaw closing system, which mechanically ensures that all four jaws move at the same time, and allows the creation of any square end size with just one type of jaw. The Siemens operator panel, which is connected to the PLC by a loop, allows

OrbiCut

Fully automatic cutting process Pipe is stationary

whereas cutting inserts rotate outside the pipe Cutting result suitable directly to orbital welding without filling wire

Afonat hydraulic squeeze pointers

POLITECNICA’S range of Afonat hydraulic squeeze pointers provides a complete technological solution for making the tong- holds of drawn pipes.

CUTTING I COLLARING I WELDING technologies for processing tubular parts

Tel: +358 20 7121 444 Fax: +358 20 7121 449 maarit.aalto@lacol.com www.larikka.com

the setting and control of all the functions and parameters of the machine (including cycle selection, jaw opening/ closing measures and speed ratio, automatic lubrication adjustment, stroke counter and recipe management). Politecnica Italia Srl – Italy Email: info@politecnicaitalia.it Website: www.politecnicaitalia.it

See you in Düsseldorf! Visit us Stand 6 A 49

A machine from Politecnica’s Afonat range

105 9.12.2 09 21.42 ›

www.read-tpt.com larikka2.indd 1

M arch 2010