Wyniki wyszukiwania - BazTech

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Method for enhanced accuracy in machining free-form surfaces on CNC milling machines

Werner Andrzej

Acta Mechanica et Automatica

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2022

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Vol. 16, no. 2

103--110

EN

The present article describes a method for enhanced accuracy in machining free-form surfaces produced on CNC milling machines. In this method, surface patch machining programs are generated based on their nominal CAD model. After the pretreatment, coordinate control measurements are carried out. The obtained results of the measurements contain information on the values and distribution of observed machining deviations. These data, after appropriate processing, are used to build a corrected CAD model of the surface produced. This model, made using reverse engineering techniques, compensates for the observed machining deviations. After regeneration of machining programs, the object processing and control measurements are repeated. As a result of the conducted procedure, the accuracy of the manufacture of the surface object is increased. This article also proposes the introduction of a simple procedure for the filtration of measurement data. Its purpose is to minimise the effect of random phenomena on the final machining error correction. The final part of the article presents the effects of the proposed method of increasing the accuracy of manufacturing on ‘raw’ and filtered measurement data. In both cases, a significant improvement in the accuracy of the machining process was achieved, with better final results obtained from the filtered measurement data. The method proposed in the article has been verified for three-axis machining with a ball-end cutter.

2

Enhancing the accuracy of standard embedded RTC module with random synchronization events and dynamic calibration

Blazinsek I., Chowdhury A.

Przegląd Elektrotechniczny

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2016

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R. 92, nr 11

248--251

EN

This paper presents a three-step calibration method for improving the accuracy of the standard crystal oscillator, which is running the embedded RTC (real time clock) module in a standalone not networked sensor device. The first is the analysis and verification of the hardware design. The second step includes implementation of the static calibration procedure where special attention is given to the power use. In the last step the dynamic calibration procedure is implemented, based on the random synchronization events. The developed method should offer a mix of good stability and power efficiency, small footprint and competitive price.

PL

Zaprezentowano metodę kalibracji i poprawy dokładności generatora wykorzystywanego we wbudowanym module zegara RTC (real time clock).

3

Ul’trazvukovye scetciki gaza GUVR-011 i opyt ih primenenia

Stetsenko A. A., Nedzelskiy S. D.

Prace Naukowe Instytutu Nafty i Gazu

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2014

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nr 194

201--208

PL

Technologia ultradźwiękowa jest jedną z niewielu technologii, które umożliwiają pomiar różnych substancji: cieczy, gazów a nawet par. W ostatnich latach gazomierze ultradźwiękowe przyciągają rosnącą uwagę ze względu na zastosowanie w wielu dziedzinach gospodarki narodowej. W ciągu ostatnich 20-u lat przedsiębiorstwo "Energouchet'' opracowało przyrządy pomiarowe; systemy pomiarowe oraz urządzenia do transportu i pomiarów różnych nośników energii. Ultradźwiękowy przepływomierz GUVR-011 może być stosowany do technologicznęgo i handlowego rozrachunku gazu w przemyśle oraz innych przedsiębiorstwach energetycznych. Przepływomierz ten ma wieloletnią praktykę ruchową jako element układów pomiarowych i gazowych stacji pomiarowych w różnych instalacjach produkcji gazu, systemach przesyłowych, urządzeniach energetycznych oraz w przemyśle chemicznym i metalurgicznym.

EN

Ultrasonic technology - is one of the few technologies that allow measuring various substances: liquids, gases and even vapor. In recent years the ultrasonic flow meters compel increasingly greater attention as far as they are applied extensively in national economy areas. Within last 20 years "Energouchet" enterprise is developing measuring devices, systems and equipment for transporting and measurement of energy sources. Ultrasonic gas flow meters GUVR-011 may be used for commercial and technological gas accounting at industrial, utility and other enterprises, energy objects. This gas flow meter has considerable operation experience as part of the measuring systems and gas metering stations at different gas production objects, gas transporting system, energy objects, in the metallurgical, chemical and other industries.