An optical system based on fringe projection method has been developed for the measurement of the cross-section area of formed sheet metal, which is generally susceptible of being reduced, and sometimes leads to necking and tearing during forming process. A better understanding of the material and component behaviour is a challenge to experimental measuring methods. To realise such a method the part to be measured is digitised in different orientations by a fringe projection system. With the help of a newly developed inspection technique, the estimation of wall thickness in the critical zones of formed sheet metal part will be implemented by evaluating the measured data, taken in different orientations from the fringe projection system, and the result would be displayed for visualisation. This method allows fast, objective and non-destructive inspection of formed metal sheet and the detection of its defects. This measurement system can be integrated in automated operating procedure for 100% inspection and also enables the speeding up of mass production. This work presents an evaluation strategy and first measuring results.

We have started developing novel systems and key technology as “Nano-CMM project”. In this project, our intention is developing the CMM with nano meter resolution to measure three-dimensional positions, orientations and parameters of three-dimensional features. For developing Nano-CMM, we evaluate properties of stages for Nano-CMM by thermal drift and tilt angles. In this report, the thermal drift and tilt angles of stages of Nano-CMM were evaluated. Then we made the new prototype of Nano-CMM made of low thermal expansion iron steel to reduce the influence of thermal drift and we also propose new construction of Nano-CMM for reducing the effect by tilt angles.

The permanent increasing of quality standards, world wide competition, as well as the legislation of regulation of the product responsibility, require not only a proper documentation of the measurement data of the production, but also the continuous supervision of measuring and test equipment. Especially in modern flexible and intelligent production environment, measuring devices are often connected directly with the manufacturing process. This causes direct or indirect influences on the quality level, therefore the supervision and management of measuring and test equipment is becoming a significant part of the quality management for the entire production.
The supervision of measuring equipment is an essential quality requirement for modern production especially at the higher demands of micro and nanotechnology. The efficiency of the confirmation can be increased and expenses can be reduced substantially through computer assistance with flexible checking intervals. A special method developed for this purpose allows increasing of the flexibility level and efficiency of a system for the intelligent management and supervision of measuring devices.

In this paper, a task-specific measuring capability criterion is described, applicable to select or validate measurement systems that provide data to set the process aim, when the techniques known as "sequence of values" or "difference chart" are used. The criterion is based on the estimation of the "uncertainty of the process mean", which characterizes the dispersion of the values that could reasonably be attributed to the process mean after the setting procedure. The proposed criterion is compared with the discrimination ratio and with the uncertainty per tolerance ratio, showing that the last one fails to predict the measuring capability for aim-setting operations.

Products with cylindrical surfaces are manufactured in many (e.g. paper, chemical, steel, heating or shipping) industries. It is required that regular estimations of cylindricity profiles be made during the production process. The reference methods can be used for measurement of cylindricity. The cylindricity deviation includes the roundness deviation in different cross-sections of an object, the relative change of its diameter and the noncentricity of profiles in relation to the nominal axis of the object. The reference measurement systems applied nowadays enable measurement of roundness profiles in relation to fixed points of support in different cross-sections of the measured object. Furthermore, it is possible to evaluate the relative difference of the diameters. However, in traditional reference measurement systems there is no possibility of measurement of the non-concentricity of profiles. That is why appropriate reference systems for measurement of cylindricity have had to be developed.