EoW September 2008

english technology news

Zwick’s latest tester can be spring loaded

Precision in electro-mechanical assemblies for the automotive, defence and aerospace industries, as well as sports and leisure activities. Depending on the application, random samples are tested after manufacture or, in some cases, 100 per cent testing is necessary. At wire 2008 Zwick exhibited a compression-spring tester for highly accurate measurement of precision springs from 1 to 2500 N. It has extremely good overall measurement technology characteristics, surpassing even the requirements of standard EN 7500. is used with the zwicki single-column materials-testing machine in conjunction with testControl electronics. The device possesses extreme vertical and lateral stiffness and comes already equipped with a precision load-cell. Overload protection prevents damage to the load cell in the event of block force being reached. Precision guides allow only vertical movement of the compression platens. The extremely stiff and patented load cell is insensitive to transverse forces and ensures that measuring errors due to elasticity under load or eccentric forces are reduced to a minimum. The instrument is designed for indirect spring length measurement, and this offers a very high level of accuracy as the already minimal axial deformation can be electronically compensated in real time. Direct measurement is available as an option and is recommended for high-precision testing of small springs. The instrument can be fitted with a CE conformable safety protection, and an anti-buckling guide spigot, matched to the spring geometry, can also be used. Special or tension springs can be tested using appropriate tooling and fixtures; the Zwick compression platens can be exchanged for suitable grips. springs are used The compression-spring tester

Zwick compression spring testing machine ▲ ▲

software adaptation. With a master testing program cyclical testing is also possible. Zwick programs are developed for integration into the IT infrastructure. Zwick GmbH & Co KG – Germany Fax : +49 7305 10200

Special testXpert® programs have been developed to suit both production control or final inspection, as well as research and development, so making the testing machine more universal. Using the standard testing program for quality control testing, most tests required by industry can be performed without

Email : info@zwickroell.eu Website : www.zwick.de

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EuroWire – September 2008