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Tytuł:
Improvement of production system reliability using selected KPIs
Autorzy:
Biały, Witold
Powiązania:
https://bibliotekanauki.pl/articles/104045.pdf
Data publikacji:
2020
Wydawca:
Stowarzyszenie Menedżerów Jakości i Produkcji
Tematy:
production
failure
reliability
KPIs
machine efficiency
produkcja
awaria
niezawodność
KPI
wydajność maszyn
Opis:
Machine failures in each production system cause an increase in costs and delays in order execution. Therefore, companies decide to introduce solutions that detect and immediately remove worrying symptoms before more serious consequences occur. Unfortunately, not all failures can be avoided – in such cases, the most important thing is the quick reaction of machine operators, maintenance and production managers. This paper identifies reliability indicators and presents the steps and effects of implementing selected KPIs (Key Performance Indicators), which aim at the production process. For the machines in which a failure occurred in the surveyed period, technical availability, Mean Times Between Failures (MTBF), Mean Down Time (MDT), technical object readiness, and the downtime coefficient were calculated.
Źródło:
Quality Production Improvement - QPI; 2020, 2, 1; 204-213
2657-8603
Pojawia się w:
Quality Production Improvement - QPI
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Approach for the Developmentof Energy-Efficient Machine Tools
Autorzy:
Neugebauer, R.
Frieß, U.
Paetzold, J.
Wabner, M.
Richter, M.
Powiązania:
https://bibliotekanauki.pl/articles/971148.pdf
Data publikacji:
2009
Wydawca:
Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:
energy efficiency
machine tool
product development
Opis:
The life cycle costs of machine tools are much higher determined by their energy costs than what is often roughly assessed. The growing demand for consumer goods and especially possibilities of individual mobility in major parts of the developing world - e. g. Asia - will lead to serious problems in meeting the demand for an abundant energy supply and will increase the cost for energy further in the near-term future. Harder efforts are necessary to "reach more with less" - using less energy than today to reach a defined goal in production. The paper deals with a methodology to design machine tools with a high "energy efficiency". Based on the property-driven design methodology by Weber a systematic approach is shown to enhance the design of machine tools. Energy efficiency is a new additional and central property in the design process. To attain these given properties characterisations are determined by the engineer to fulfil these properties. On the developing-path the characterisations are defined in more detail step by step, and after each step it is assured if the accounted properties where met by the defined characteristics. The approach is to first analyse existing machine tools and therefore define prior energy consumers. The identified major consumers are afterwards systematically addressed to reduce their energy consumption. The result is an enhanced machine tool with state-of-the-art energy usage. This addresses the objectives of the EU and takes pressure of the energy supply by reducing the energy demand in production.
Źródło:
Journal of Machine Engineering; 2009, 9, 2; 51-62
1895-7595
2391-8071
Pojawia się w:
Journal of Machine Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Statistical evaluation of impact factors to the energy consumption of machine tools
Autorzy:
Wittstock, V.
Kolouch, M.
Paetzold, J.
Powiązania:
https://bibliotekanauki.pl/articles/100171.pdf
Data publikacji:
2013
Wydawca:
Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:
energy efficiency
machine tool
statistical analyses
Opis:
In this paper, a method for the evaluation of the energy consumption of machine tools is presented. For this purpose, the energy consumption of various machine tools has been investigated experimentally. In order to increase the evaluation basis, measured values of energy consumption were also taken from literature. The evaluation contains an analysis of various factors concerning the productivity and the size of the investigated machine tools. This analysis is capable of detecting the impact factors to increase the energy-efficiency of production systems. It can further reduce the effort required for data acquisition when various machine tools are compared.
Źródło:
Journal of Machine Engineering; 2013, 13, 2; 79-91
1895-7595
2391-8071
Pojawia się w:
Journal of Machine Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Man-algorithm Cooperation Intelligent Design of Clothing Products in Multi Links
Autorzy:
Han, Chen
Lei, Shen
Shaogeng, Zhang
Mingming, Wang
Ying, Tang
Powiązania:
https://bibliotekanauki.pl/articles/2056307.pdf
Data publikacji:
2022
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Biopolimerów i Włókien Chemicznych
Tematy:
intelligent algorithm
cooperation
clothing design
machine learning
efficiency
Opis:
The changes in technology have led to a synchronous change in the clothing design method, as well as media and artistic aesthetics in the same period. The intelligence algorithm is constantly increasing its participation in development and production in the clothing industry. In this study, a variety of intelligent algorithms, including the parameterised numer state algorithm, Generative Adversarial Networks, and style transfer were introduced into the multi-links of clothing product design and development, such as clothing shape, print pattern, texture craft, product vision, and so on. Then, an innovative clothing design method based on the cooperation of the intelligent algorithm and various human functional roles was constructed. The method improves the efficiency of the multiple links of clothing design, such as generating 10000 printing patterns every 72.12 seconds, and completing the migration of 92.7 frames of the garment process style every second. To a certain extent, this study realizes the scale economy of clothing design and reduces its marginal cost through the unlimited computing power brought about by Moore’s law of digital technology, which provides a reference for the exploration of clothing design in the era of industry 4.0.
Źródło:
Fibres & Textiles in Eastern Europe; 2022, 1 (151); 59--66
1230-3666
2300-7354
Pojawia się w:
Fibres & Textiles in Eastern Europe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Availability Study of a Longwall Shearer Including Phases of its Operation
Autorzy:
Brodny, Jarosław
Brzana, Estera
Powiązania:
https://bibliotekanauki.pl/articles/2064591.pdf
Data publikacji:
2021
Wydawca:
STE GROUP
Tematy:
mining machines
efficiency
machine availability
OEE
industrial automation
Opis:
The mining production process includes a number of sub-processes, the most important of which is mining the rock mass. In this process, increasingly modern mining machines are being used to replace human labor and to achieve high productivity. Full utilization of the potential of these machines is of great importance for the efficiency of individual stages and the whole process of mining production. In the process of mining the rock mass, the use of machinery of a mechanized longwall system is of fundamental significance. Their availability, efficiency and reliability significantly affect the efficiency of the whole mining production process. The paper refers to the availability of a longwall shearer as the basic machine of a mechanized mining system. Based on the analysis of diagnostic signals, recorded by the industrial automation system, the availability of the longwall shearer was determined for 10 selected cycles of its operation. The analysis also included the phases of these cycles, treated as separate periods of the shearer’s work. This division is a consequence of a great difference in the character of the shearer’s work in particular phases of the operating cycle. The analysis covered the phases of cutting, mining and shunting. The determined temporal waveforms and the shearer’s availability in these phases show their great diversity. Therefore, the results indicated the necessity to analyze the operation of mining machines in their characteristic periods, which can be the basis for minimizing unplanned interruptions in their operation and improving the efficiency of their use.
Źródło:
Multidisciplinary Aspects of Production Engineering; 2021, 4, 1; 200--211
2545-2827
Pojawia się w:
Multidisciplinary Aspects of Production Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Software-defined workpiece positioning for resource-optimized machine tool utilization
Autorzy:
Ströbel, Robin
Probst, Yannik
Hutt, Louisa
Fleischer, Jürgen
Powiązania:
https://bibliotekanauki.pl/articles/2200260.pdf
Data publikacji:
2023
Wydawca:
Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:
resource efficiency
workpiece positioning
CNC machine tool
optimisation
Opis:
Advancing climate change, tense world markets, and political pressure steadily increase the demand for resource-optimized production solutions. Herby, the positioning of the raw material in the machine tool is an important factor that has received little attention. Traditionally, this is done centrally on the machine table, which leads to locally increased wear of the feed axis. Furthermore, positioning directly influences energy consumption during machining. Consequently, the longest possible component utilization through optimum wear and energy optimization creates a direct conflict of objectives. To solve this conflict, this paper presents an automated approach for software-defined workpiece positioning and NC-Code optimization regarding the axis-specific energy consumption and the spindle condition of ball screws. An approach for mapping the energy consumption and the directly measured spindle condition is presented. Both represent input variables of the cost function. Approaches for the optimization of the position as well as for the practical implementation are proposed.
Źródło:
Journal of Machine Engineering; 2023, 23, 1; 71--84
1895-7595
2391-8071
Pojawia się w:
Journal of Machine Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Calculation of the performance indicators of machine and tractor aggregates using biofuel
Kalkulacja wskaźników wydajności maszyn zagregowanych z ciągnikiem zasilanym biopaliwem
Autorzy:
Anisimov, V.
Ryaboshapka, V.
Ivanovs, S.
Powiązania:
https://bibliotekanauki.pl/articles/334657.pdf
Data publikacji:
2016
Wydawca:
Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Maszyn Rolniczych
Tematy:
biodiesel fuel
machine
tractor
efficiency
biopaliwo
maszyna
ciągnik
wydajność
Opis:
The existing methods for the calculation of the performance indicators of machine and tractor aggregates (MTA) do not take into account the effect of biodiesel fuel on their operation and therefore require corrections considering the key and associated factors. The aims of the investigation are clarification of mathematical dependencies in case another kind of fuel is used and development of a methodology for the calculation of the efficiency of the MTA. As a result of simulation of the MTA draft indicators, the effect of biodiesel fuel on the tractive characteristics of the MTA power unit has been investigated under different operating conditions.
Istniejące metody kalkulacji wskaźników wydajności maszyn zagregowanych z ciągnikiem nie biorą pod uwagę wpływu biopaliwa na ich pracę i dlatego wymagają korekt po rozważeniu kluczowych i powiązanych czynników. Kierunki badań są wyjaśnieniem matematycznych zależności, jeżeli inny rodzaj paliwa jest używany i rozwój metodologii dla kalkulacji skuteczności maszyn zagregowanych z ciągnikiem. Jako wynik symulacji wskaźników maszyn zagregowanych z ciągnikiem w fazie projektu, wpływ biopaliwa na pociągowe cechy bloku energetycznego maszyn zagregowanych z ciągnikiem został zbadany na mocy innych warunków eksploatacyjnych.
Źródło:
Journal of Research and Applications in Agricultural Engineering; 2016, 61, 3; 16-20
1642-686X
2719-423X
Pojawia się w:
Journal of Research and Applications in Agricultural Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Technical Efficiency of Polish Companies Operating in the Machinery Manufacturing Sector
Autorzy:
Kozłowska, J.
Powiązania:
https://bibliotekanauki.pl/articles/409346.pdf
Data publikacji:
2016
Wydawca:
Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
Tematy:
technical efficiency
machine manufacturing
DEA method
services in manufacturing company
Opis:
The machinery sector plays an important role in the economy of each country providing the technology, machinery, equipment and production lines for other manufacturing sectors. Nowadays, these companies often introduce also services to their portfolio, thus exceeding the boundary between the manufacturing sector and the service sector. These actions are caused by the global trend of shifting towards a service economy and harsh competitive conditions in the market place. The aim of this article is to assess the condition of the selected group of companies operating in the sector of machinery and industrial equipment manufacturing in terms of technical efficiency, and to examine whether the number of services offered by them correlates with the efficiency score. The analysis was made using DEA (Data Envelopment Analysis), which as a non-parametric method, is widely used for studding the efficiency of both business institutions and public organizations, for which the relationship between inputs and achieved outputs (i.e. the production function) is unknown. Data for the study were drawn from the EMIS (Emerging Market Information Service) database, and the sampling was made in accordance with the DEA methodology taking into account factual and statistical methods. Both, companies that offer a wide range of services and those that limit the range of services to warranty support, were analyzed, and then the results were compared and discussed.
Źródło:
Research in Logistics & Production; 2016, 6, 5; 443-453
2083-4942
2083-4950
Pojawia się w:
Research in Logistics & Production
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of Industrial Automatics Systems for Monitoring of Operational States of Machines
Autorzy:
Brodny, J.
Powiązania:
https://bibliotekanauki.pl/articles/2064989.pdf
Data publikacji:
2018
Wydawca:
STE GROUP
Tematy:
production process
industrial automatics systems
longwall shearer
efficiency
machine diagnostics
Opis:
In the recent years, industrial automatics practically was used in all domains of economy. Particularly, it concerns to manufacturing processes and technological processes. It seems that in these systems, very important meaning have measuring and control devices, installed practically in all production machines. Operational parameters of machines, registered by these systems are the kind of source of very important information, which not always are utilized in proper way by the users. Particularly, it concerns mining branch, where more technically advanced machines are used. However, not always their users utilize the big potential of these machines. For this reason, in the paper there are presented results of studies, enabling the application of industrial automatic systems to analyze operation states of machines, based on registered parameters of these machines. Longwall shearer was submitted to detailed analysis as the most important machine in mining exploitation process. There are presented proposals for application registered data for determine effectiveness of its utilization and to diagnose its technical condition. Presented paper is aimed to realize and encouraging users to wider practical use of the capabilities of industrial automation systems. This should improve efficiency and safety of production processes.
Źródło:
Multidisciplinary Aspects of Production Engineering; 2018, 1, 1; 315--321
2545-2827
Pojawia się w:
Multidisciplinary Aspects of Production Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Future sustainable maritime sector: energy efficiency improvement and environmental impact reduction for fishing carriers older than 20 years in the fleet. Part II
Autorzy:
Yalama, Viktor
Yakovleva, Olga
Trandafilov, Volodymyr
Khmelniuk, Mykhailo
Powiązania:
https://bibliotekanauki.pl/articles/32906972.pdf
Data publikacji:
2022
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
blue economy
energy efficiency
fishing carrier
vapor compression refrigeration machine
Opis:
For the maritime sector to be sustainable and to have an intact blue economy, shipowners should be ready to implement Ship Energy Efficiency Management Plans alongside energy efficiency projects. The problem for organizations and shipowners having fishing carriers older than 20 years is highlighted and the following challenges arise for decision-making authorities. To keep such ships in the fleet for the next decade, shipowners should deploy energy efficiency projects for marine system retrofitting to improve energy efficiency and meet environmental regulations. An energy audit is performed and an energy efficiency program is proposed with guidelines for regulations that are currently coming into force. To improve energy efficiency, reduce the environmental impact, and cut fuel consumption costs, marine system retrofitting is done, in a particular case, with two options proposed. The first is a cascade refrigeration system with hydrocarbons and carbon dioxide, where the shipowner gains an energy efficiency improvement of about 20%. The second option is a two-stage refrigeration system with ammonium as the environmentally friendly refrigerant, which improves the energy efficiency by about 26%. Technical and economic issues have been discussed.
Źródło:
Polish Maritime Research; 2022, 3; 78-88
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of efficiency of cascade power machines of locomotives
Ocenka ehffektivnosti kaskadnykh ehnergeticheskikh ustanovok lokomotivov
Autorzy:
Starcheous, Y.
Voronov, O.
Kovtun, A.
Powiązania:
https://bibliotekanauki.pl/articles/793114.pdf
Data publikacji:
2013
Wydawca:
Komisja Motoryzacji i Energetyki Rolnictwa
Tematy:
cascade power machine
locomotive
cascade pressure exchanger
railway transport
mass exchange
recovery
efficiency
Źródło:
Teka Komisji Motoryzacji i Energetyki Rolnictwa; 2013, 13, 3
1641-7739
Pojawia się w:
Teka Komisji Motoryzacji i Energetyki Rolnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Test and evaluation of the factors affecting on the freshly harvested peanut threshing machine performance
Badanie i ocena czynników wpływających na wydajność młocarni orzeszka ziemnego
Autorzy:
Abdi, Jafar
Golmohammadi, Abdollah
Shahgholi, Gholamhossein
Rezvanivand Fanaei, Adel
Szymanek, Mariusz
Tanas, Wojciech
Powiązania:
https://bibliotekanauki.pl/articles/2204315.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Inżynierii Rolniczej
Tematy:
peanuts
separation rate
threshing efficiency
threshing machine
orzeszki ziemne
stopień separacji
efektywność młócenia
młocarnia
Opis:
Peanut is an important produce in the global food chain because of their high-quality oil and protein content. Due to the significant value of its production in Iran, a threshing machine was developed for high-quality harvesting, to reduce harvesting costs and labor effort. In the course of a number of field experiments to evaluate the performance of the machine, the rotational speed of the thresher was adopted at three levels of 150, 200, and 300 rpm. Other experimental factors included the distance of the concave from the thresher (2, 6, and 8 cm) and the product feeding rate of 750, 850, and 950 kg·h-1. Regarding the measurements, the threshing efficiency, the separation rate, and the percentage of the crushed product were calculated and evaluated. The results revealed that as the rotational speed of the thresher, the increment feeding rate of the product and the distance between the thresher and the concave grate increased, the thresher efficiency decreased. The maximum threshing efficiency of 95% was obtained at a rotational speed of 150 rpm and a distance of 2 cm. Also, with increasing the rotational speed of 300 rpm and a distance of 8 cm, the threshing efficiency decreased to 75%. The separation rate decreased intensely as the distance between the thresher and the concave increased. In addition, the separation rate decreases with increasing rotational speed of the thresher. At a rotational speed of 150 rpm and a distance of 2 cm, the separation rate was 96%, but the separation rate decreased to 76% as rotational speed increased to 300 rpm and distance increased to 8 cm. With increasing rotational speed and feeding rate, the percentage of crushed pods increased. The maximum of 16% was obtained at a rotational speed of 300 rpm, a feeding rate of 950 kg·h-1 and a distance of 2 cm.
Orzeszki ziemne są ważnym produktem w globalnym łańcuchu żywnościowym ze względu na jakość oleju i wysoką zawartość białka w ziarnach. Ze względu na znaczenie produkcji orzeszków ziemnych w Iranie, opracowano wysokiej jakości młocarnię do zbioru, aby zmniejszyć koszty zbioru i nakład pracy. W trakcie szeregu eksperymentów polowych mających na celu ocenę wydajności maszyny, prędkość obrotową młocarni przyjęto na trzech poziomach 150, 200 i 300 obr·min-1. Pozostałe czynniki doświadczalne to: szczelina robocza młocarni: 2, 6 i 8 cm oraz prędkość podawania produktu: 750, 850 i 950 kg·h-1. W wyniku przeprowadzonych pomiarów obliczono i oceniono skuteczność omłotu, stopień separacji oraz procent rozdrobnionego produktu. Wyniki wykazały, że wraz ze wzrostem prędkości obrotowej młocarni, przyrostu prędkości podawania produktu oraz odległości młocarni od wklęsłego klepiska, sprawność młocarni maleje. Maksymalną sprawność omłotu wynoszącą 95% uzyskano przy prędkości obrotowej 150 obr·min-1 i odległości 2 cm. Również przy zwiększaniu prędkości obrotowej do 300 obr·min-1 i odległości 8 cm sprawność omłotu malała do 75%. Szybkość oddzielania malała intensywnie wraz ze wzrostem odległości młocarni od wklęsłości. Ponadto stopień oddzielenia maleje wraz ze wzrostem prędkości obrotowej młocarni. Przy prędkości obrotowej 150 obr·min-1 i odległości 2 cm wskaźnik separacji wyniósł 96%, ale wraz ze wzrostem prędkości obrotowej do 300 obr·min-1 i zwiększeniem odległości do 8 cm wskaźnik separacji spadał do 76%. Wraz ze wzrostem prędkości obrotowej i szybkości podawania wsadu wzrastał procent rozdrobnionych strąków. Maksymalną wartość 16% uzyskano przy prędkości obrotowej 300 obr·min-1, prędkości podawania 950 kg·h-1 i odległości 2 cm.
Źródło:
Agricultural Engineering; 2022, 26, 1; 167--185
2083-1587
Pojawia się w:
Agricultural Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Increasing of energy efficiency of spindles with fluid bearings
Autorzy:
Fedorynenko, D.
Sapon, S.
Boyko, S.
Urlina, A.
Powiązania:
https://bibliotekanauki.pl/articles/387579.pdf
Data publikacji:
2017
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
energy efficiency
power losses
hybrid fluid bearing
spindle
machine tool
low viscosity lubrication
corrosion protection
Opis:
Promising ways of energy efficiency gain of spindles with fluid flow bearings are offered. New design of journal hybrid flow bearing which contains spherical bearing pockets and adjustable valves with relay control system is offered to improve energy efficiency of spindle units of machine tools. To reduce power losses of fluid bearings at high speed special lubrication based on water with integrated system of corrosion protection is offered. Results of theoretical research of energy consumption of grinding machine tool with a new design of spindle hybrid bearings are presented. Power losses of the spindle unit with both new design and base design of journal bearings are assessed. Effectiveness of new design of spindle hybrid bearings at high operating speeds is shown.
Źródło:
Acta Mechanica et Automatica; 2017, 11, 3; 204-209
1898-4088
2300-5319
Pojawia się w:
Acta Mechanica et Automatica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of parameters of milling process on the energy consumption of the machine tool
Autorzy:
Borkowski, Wojciech
Skoczyński, Wacław
Piórkowski, Paweł
Jankowski, Tomasz
Roszkowski, Andrzej
Foremniak, Michał
Powiązania:
https://bibliotekanauki.pl/articles/102357.pdf
Data publikacji:
2018
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
energy consumption
machine tools
machining process
energy efficiency
zużycie energii
narzędzia maszynowe
proces obróbki
efektywność energetyczna
Opis:
The article discusses the importance of energy consumption for the modern machine tool. The research was carried out to show the influence of various cutting factors and parameters on the power consumption values of the machine tool. A special algorithm was developed to determine the actual energy consumption of the machine tool during the cutting process. The results of the study were compared with the algorithms of tool companies to determine the machine’s power demand. The possibilities of using research conclusions to develop a more accurate method for assessing the energy demand of a machine tool in the cutting process were indicated.
Źródło:
Advances in Science and Technology. Research Journal; 2018, 12, 3; 24-31
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Efficiency of the generating set with synchronous generator supplied with single-phase electricity receivers
Sprawnosc zespolu pradotworczego z synchronicznym generatorem wyposazonym w jednofazowe odbiorniki elektryczne
Autorzy:
Scibisz, M.
Makarski, P.
Powiązania:
https://bibliotekanauki.pl/articles/792172.pdf
Data publikacji:
2012
Wydawca:
Komisja Motoryzacji i Energetyki Rolnictwa
Tematy:
synchronous generating set
efficiency
generating set
synchronous machine
reactive power compensation
single-phase electricity receiver
investigation
methodology
Źródło:
Teka Komisji Motoryzacji i Energetyki Rolnictwa; 2012, 12, 2
1641-7739
Pojawia się w:
Teka Komisji Motoryzacji i Energetyki Rolnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
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