Thermal effects are still the largest single source of dimensional errors and apparent non-repeatability of technological equipment.The thermal stability of robots and machine tools, both in the phase of machining as in that of testing and reception, most also be connected with quality assurance and quality management. The author has studied more than 20 years the optimisation of thermal behaviour of machine tools and he had his doctorate in this field. Also, the author has used, for the first time in Romania, the thermographical study at the machine tools, and has determined on this way the...
The paper presents a novel approach for generating multipurpose models of machining operations combining machine learning and search techniques. These models are intended to be applicable at different engineering and management assignments. Simulated annealing search is used for finding the unknown parameters of the models in given situations. It is expected that the developed block-oriented framework will be a valuable tool for modelling, monitoring and optimisation of manufacturing processes and process chains. The applicability of the proposed solution is illustrated by the results of...
This paper presents a new finish check inspection method for detecting defects for crystal glassware. The visual inspection system utilizes the image comparison approach that involves the well-known template matching techniques, where the pattern under test is compared with a reference pattern. The algorithm utilizes tonal measures of mean and deviation of the gray levels, combined with an algorithm that determines the discrimination factor between pattern under test and reference pattern; the tonal measures used for quality control of glass are the average image intensity of each row of the...
Top management is faced today with new challenges imposed by the global competition. Business excellence, achieved through the application of TQM concept, is one of possible answers for successes achieved at the global market world. Adapting these axioms the paper describes the development of a TQM-VM model (for business excellence) and its software, that may be used for: (i) the assessment of existing business excellence, and (ii) the design or re-engineering of business systems incorporating business excellence criteria as well. The paper also presents an example of the assessment of a...
Satisfying consumers` requirements for product quality, price and production times constitutes nowadays a vast and sophisticated field of activities which penetrate all business functions of a company. These requirements present a serious problem to companies. It is very important that the management insists on introduction and perfection of individual methods at all company’s levels and provides continuous on-job training of the staff. In a dynamic and competitive marketing and globalization environment, benchmarking, TRIZ, QFD and FMEA have proved to be efficient tools of the TQM system....
In many segments of today’s industry, process monitoring and traceability are essential if the stringent requirements demanded in many standards are to be met. In conjunction with STEINEL’s piezoelectric force sensors and a high sophisticated measuring system the evaluation software PiezoWin2 is available. This software gives the user a modern data monitoring and statistics program that is designed to simplify and enhance reliability in process monitoring. PiezoWin2 is used in the automotive and aircraft wiring industries as well as in the telecommunication. In this industries crimp...
An approach to characterizing the measurement credibility and a methodology of statistical evaluation of measuring signals for measurement experiments in undersea environment has been proposed.
Ensuring a high quality and totally defect free production is a crucial issue in flexible manufacturing systems (FMS) because interruptions are expensive in those systems. AutoComp project examines possibilities to build an autonomous measuring and compensation system for a FMS. The system involves, besides a device itself, also analysis of measurement, calculation of compensation tables and activation of new parameters in a numerical controller (NC).
The paper deals with the importance, role and creation of the firm or organisation culture in quality management and environmental management. This two areas are very important for good image of any organisation and for the managers must be the number one. The most significant impact on the implementation QMS and EMS has the organisation culture, which is an integrating element of the all organisation systems.
Industrial processes continually require both operational performance and safety improvements, and these two requirements highlight the need for means of fault diagnosis. The development of condition-based maintenance techniques as opposed to planned maintenance or reactive (after failure) maintenance practices is a tendency that has shown impressive growth and promises to dominate the scenario in the near future. Instruments play an essential role in the achievement of the expected results, but the instruments themselves can be sources of unreliability and fault within industrial plants. An...