MANUFACTURING TECHNOLOGY Offering material testing solutions
In October the 20th O testXpo, an international forum for materials testing, was hosted in Ulm, Germany.
ver 2,000 visitors and customers from around the world took the opportunity to familiarise themselves with the latest methods in materials testing. As ever, the event was organised by the Zwick Roell Group, together with
25 co-exhibitors from the field of quality assurance. The comprehensive range of exhibits was complemented by
specialist talks and practical demonstrations. The focus this year was on testing solutions from the plastics, metals, automotive, medical engineering, textile and paper industries. A feature of the testXpo is that visitors get hands-on time with
Zwick’s testXpert software, and have the opportunity to speak to service staff and find out about the innovative grips and other
tools available for materials testing. Highlights included the new laserXtens Array extensometer
for non-contact measurement of small and large strains, together with fully automatic robotic testing system roboTest. From the field of medical engineering, a compact testing system to determine behaviour during tightening is now available to manufacturers of bone screws. Zwick has also developed new automated systems for testing reinforcement steel and for puncture tests on multi-layer corrugated board. A key element in all tests is the new testXpert II testing
software, featuring simple, intuitive operation. TextXpert Research provides a uniform user interface
throughout, including parameterisation of the testControl II electronics, test definition, performance and evaluation. All data describing the test, such as sensor calibration, limits, PID parameters, set values and test data are stored in one file, allowing the test to be traced in full detail and if necessary repeated whenever required. “Operation is remarkably easy, with informative icons and a
clear menu structure to guide the operator through the program step by step, while the intuitive nature of the menus allows even the most demanding activities to be completed quickly and effectively. This sophisticated, well-thought-out operation concept is available for all applications and all servo-hydraulic testing machines, regardless of whether dynamic or static tests are involved.” With over 25,000 visitors, more than 1,300 exhibits and testing solutions and some 500 lectures in the course of the last 20 years, testXpo has become a fixture in the testing industry calendar.
Mobile station for SPC checks
Eldes snc di Bellotto Paolo & C. believes its Themis 2K Optical Version is a dream come true for every manufacturer of metallic parts needing to organise recurring measurements in production for statistic process control.
A
frame with up to five parts is provided, adjusted when the Themis 2K is set up for a new process. Both sides of the frame contain customisable parts to fix fasteners. An indenter can be used to infer, by optical measurement, the penetration. First the operator selects a process on screen; they then receive the related control plan and insert the frame in ‘load’ position. Each time a part is located in front of the camera the screen displays the image of the part. If the measurements
are correct, the sequence proceeds until all the parts are controlled. For those parts that are out of tolerance, the system prompts the operator to select whether the measurement is to be accepted or repeated. The Themis 2K can measure diameters, lengths and threads, as well as depth recess and holes on the shank. Parts can be rotated with a resolution of 1
/10 of a degree to detect ovalities, misalignments in complex parts, threading integrity, ‘key’ of a hexagonal head
and the corresponding measurement at 90° with respect to it, which provides the width measured on the edges. The Themis module offers complete SPC control, starting with immediate visualisation by the operator of the place of the new point acquired on the SPC chart. The user friendy touch screen monitor and the presence of an industrial PC on board displays the operator annexed files for the article. The operator can also see plans, characteristics, every kind of SPC alarm, as well as being able to easily insert comments and notes. The Themis module also allows the supervisor or quality manager to immediately see the situation of all the processes that are on-going on the related machines. The Themis station is not a standalone product: optical control is managed by the Themis-Quarta software solution, which
acquires and performs statistical analysis on dimensional measurements, where control plans, job order launches, SPC analysis and measurement tools are managed.
94 Fastener + Fixing Magazine • Issue 72 November 2011
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