Temat: Tool - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Recent advances in precision, sustainability and safety of machine tools
Autorzy:: Uhlmann, Eckart
Powiązania:: https://bibliotekanauki.pl/articles/24084721.pdf
Data publikacji:: 2023
Wydawca:: Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:: machine tool
precision
safety
sustainability
Opis:: Machine tools are the main driver of economic, environmental and social sustainability in industrial production. The ongoing shift from mass production to highly individualized, small batch manufacturing requires machine tools to be more flexible to changing needs while maintaining at least the same level of productivity. However, flexibility and productivity are at odds with the necessity for resource and energy efficiency. At the same time, more sophisticated workpiece specifications are pushing the boundaries regarding precision and dynamics of machine tools. In such a high-performance context, machine safety plays a major role and is becoming increasingly challenging due to higher kinetic energies of moving components. This paper examines recent advances in machine tool precision, sustainability, and safety. Six comprehensive case studies are provided to illustrate how these improvements contribute to an increased productivity. Hardware and software solutions for pose-controlled robotic manufacturing and thermoelectrically tempered high-performance spindles will be presented. Modular machine tool frames based on building blocks and an adaptive cooling system with thermoelectric generators for linear direct drives demonstrate their major impact on resource and energy efficiency. Machine safety is addressed through an analysis of potential hazards as well as improved protective measures. Model-based predictions precisely identify critical process parameters that lead to unbalance-induced failure of slim tool extensions, while on the protection side, new statistical models are applied to assess the protective performance of safeguards much more accurately. The cutting-edge technologies for machine tools presented in this paper will help manufacturers to cope with current and future challenges in industrial production.
Źródło:: Journal of Machine Engineering; 2023, 23, 3; 5--25
1895-7595
2391-8071
Pojawia się w:: Journal of Machine Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Study on reducing energy consumption in manufacturing systems
Autorzy:: Jędrzejewski, J.
Kwaśny, W.
Powiązania:: https://bibliotekanauki.pl/articles/99980.pdf
Data publikacji:: 2011
Wydawca:: Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:: machine tool
processes
energy consumption
Opis:: The paper presents the complexity and importance of energy saving in industry, manufacturing facilities, machine tools and machining processes. The increasing energy demand and the necessity of conscious energy use are highlighted. Problems relating to the reduction of energy consumption by machine tools and manufacturing facilities, the necessity of basing new energy-efficient designs on knowledge, the accurate modelling of power losses and the use of intelligent energy consumption control with special regard to the drives of controllable axes are discussed. of reducing energy consumption by machine tools and manufacturing processes is indicated.
Źródło:: Journal of Machine Engineering; 2011, 11, 3; 7-20
1895-7595
2391-8071
Pojawia się w:: Journal of Machine Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Increasing reconfigurability by adaptive module for a lathe
Autorzy:: Heisel, U.
Tonn, N.
Maier, W.
Powiązania:: https://bibliotekanauki.pl/articles/1429160.pdf
Data publikacji:: 2008
Wydawca:: Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:: reconfiguration
machine tool
design
spindle
Opis:: To achieve a higher reconfigurability of machine tools, the Institute for Machine Tools at the University of Stuttgart developed a new spindle module in cooperation with the company INDEX-Werke GmbH & Co. KG (Esslingen, Germany) within the framework of a transfer project (TFB59), supported by the DFG. This spindle module enables the operator to exchange the spindle in clearly less time and hence represents an important device for the reconfigurability of machine tools. This paper describes important steps in the development and design of the new machine module.
Źródło:: Journal of Machine Engineering; 2008, 8, 4; 5-12
1895-7595
2391-8071
Pojawia się w:: Journal of Machine Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Innowacyjność polskich obrabiarek skrawających. Czynniki determinujące
Polish machine-tools innovativeness. Determining factors
Autorzy:: Matuszewski, M.
Styp-Rekowski, M.
Powiązania:: https://bibliotekanauki.pl/articles/404437.pdf
Data publikacji:: 2018
Wydawca:: Wydawnictwo AWART
Tematy:: machine tool
technical innovations
innovativeness
Opis:: W artykule przedstawiono czynniki, które determinują wdrażanie innowacji w polskim przemyśle obrabiarkowym. Jako trzy najistotniejsze autorzy wymieniają: czynnik ludzki, efektywność transferu wiedzy oraz kwestie ekonomiczne. Niedostatki stwierdzone we wszystkich wymienionych sferach powodują, że innowacyjność polskich obrabiarek nie jest taka jakiej można oczekiwać, biorąc pod uwagę bogate tradycje w tym zakresie.
In the paper the factors that determine the implementation of innovations in the Polish machine tool industry were presented. As the three most important in authors mention there are: human factor, efficiency of knowledge transfer and economic aspects. Deficiencies found in all the above-mentioned areas make the innovativeness of Polish machine-tools not as expected, given the rich Polish traditions in this field.
Źródło:: Obróbka Metalu; 2018, 3; 12-14
2081-7002
Pojawia się w:: Obróbka Metalu
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Practical applicability of ident package to identification of parameters of dynamic models of machine tool supporting systems
Praktyczne możliwości wykorzystania pakietu IDENT do identyfikacji parametrów modeli dynamicznych układów nośnych obrabiarek
Autorzy:: Gutowski, P.
Berczyński, S.
Powiązania:: https://bibliotekanauki.pl/articles/281189.pdf
Data publikacji:: 1998
Wydawca:: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:: identification
machine tool
dynamics
stiffness
Opis:: In the paper a short description of the identification method of parameters of machine tool supporting system dynamic models, constructed according to the rigid finite element method convention is given. The identification is carried out on the basis of selected points of the experimentally determined amplitude-frequency characteristics of tested machine tool. It is possible to identify the parameters of spring-damping elements which model slideway joints, lead screws, turntables and rolling blocs as well as the parameters of the object foundation on springdamping vibration isolators. Principal mathematical relationships of the identification algorithm are given. An example of practical use of this method for identifying selected parameters of FWD-32J type milling machine model is presented and discussed.
W pracy przedstawiono krótki opis metody identyfikacji parametrów modeli dynamicznych układów nośnych obrabiarek budowanych w konwencji metody sztywnych elementów skończonych. Identyfikację prowadzi się na podstawie wybranych punktów z wyznaczonych doświadczalnie charakterystyk amplitudowo-częstotliwościowych badanej obrabiarki. Możliwe jest prowadzenie identyfikacji parametrów elementów sprężysto-tłumiących modelujących połączenia prowadnicowe, śruby pociągowe, obrotnice i belki toczne, a także parametrów elastycznego posadowienia obrabiarki na wibroizolatorach. Podano podstawowe zależności matematyczne algorytmu identyfikacji oraz podano i omówiono przykład praktycznego wykorzystania metody do identyfikacji wybranych parametrów modelu układu nośnego frezarki FWD-32J.
Źródło:: Journal of Theoretical and Applied Mechanics; 1998, 1; 189-211
1429-2955
Pojawia się w:: Journal of Theoretical and Applied Mechanics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Proposal of device for monitoring of educational machine tools
Autorzy:: Císar, M
Kuric, I.
Čuboňová, N.
Vlček, Š.
Powiązania:: https://bibliotekanauki.pl/articles/103244.pdf
Data publikacji:: 2016
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:: monitoring
prototype
machine tool
diagnostics
Opis:: Maintaining machinery in conditions capable of production requires certain level of maintenance which should be planned in order to avoid unnecessary downtiqmes. Technical diagnostics and monitoring provides data necessary for effective targeting, planning, and optimizing maintenance actions. This article describes a proposal of a system designed for monitoring various parameters on educational machine tools of EMCO Concept series, which are widely used at schools and universities and therefore, relatively easily accessible for research without any issues regarding confidentiality, common in industrial applications. The article describes a situation for which the device was designed, measured parameters, sensors its implementation and testing.
Źródło:: Advances in Science and Technology. Research Journal; 2016, 10, 31; 80-86
2299-8624
Pojawia się w:: Advances in Science and Technology. Research Journal
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Limiting Precision Distortions in Spindle Unit of HSC Machining Centre
Autorzy:: Jedrzejewski, J.
Kwasny, W.
Modrzycki, W.
Powiązania:: https://bibliotekanauki.pl/articles/971113.pdf
Data publikacji:: 2008
Wydawca:: Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:: HSC
machine tool
precision
distortion
Opis:: The paper presents causes of excessive precision distortions, appearing in electrospindles of HSC machining centres. The influence of changing ambient temperature is shown, as well as the precision of its modelling. Phenomena, which appear in the electrospindle unit during large rotational speed changes, have been presented and the functioning of bearing loading sleeve has been shown, which has the task of compensating thermal expansions of a spindle. Conditions of proper functioning of the sleeve have been presented, which should assure minimal displacements of a spindle. Also, possibilities of increasing bearing life span have been pointed out.
Źródło:: Journal of Machine Engineering; 2008, 8, 1; 44-53
1895-7595
2391-8071
Pojawia się w:: Journal of Machine Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Methods of machine tool error compensation
Autorzy:: Turek, P.
Jędrzejewski, J.
Modrzycki, W.
Powiązania:: https://bibliotekanauki.pl/articles/99544.pdf
Data publikacji:: 2010
Wydawca:: Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:: machine tool
errors compensation methods
Opis:: The most important tendencies in the development of modern machine tools are pointed out, including the improvement of their design and development of error compensation methods. An overview of the most popular and useful error compensation methods for machine tools is presented. Based on examples, the effectiveness and limitations of each method are discussed. An integrated 5-axis machine tool behaviour model is presented, which assists in the elaboration of an error model required for the compensation purposes.
Źródło:: Journal of Machine Engineering; 2010, 10, 4; 5-25
1895-7595
2391-8071
Pojawia się w:: Journal of Machine Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Lightweight machine enclosures for dynamic and efficient production processes
Autorzy:: Möhring, H.-Christian
Stehle, Thomas
Schneider, Matthias
Powiązania:: https://bibliotekanauki.pl/articles/99419.pdf
Data publikacji:: 2019
Wydawca:: Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:: machine tool
safety
acoustic emission
Opis:: Usually machining centres for processing wood-based and composite materials have moving partial machine enclosures in the X-axis direction. Because the workpieces to be machined are often large (e.g. aircraft doors), these partial enclosures have prevailed on the market compared to voluminous complete enclosures. Owing to the general trend towards complete machining through process integration, an increasing number of additional units are integrated into machining centres in addition to the main spindle. This leads to an increase of the mass to be moved as well as a larger and thus heavier partial enclosure. This inevitable increase in mass leads to a deterioration of the dynamic properties of the machine. To counteract this increase in mass, the use of lightweight design materials for machine enclosures becomes in the focus of attention. The lightweight materials to be used must comply with the requirements of modern mechanical engineering and legislation: retention in the event of tool breakage, reduction in the noise exposure of the machine environment and cost-effective solutions compared to the materials used nowadays. The sheet steel used today as material for partial enclosures is therefore to be supplemented or replaced with suitable lightweight design materials. Different lightweight materials are qualified for suitability as machine enclosure. Apart from mass reduction, ecological as well as economic aspects of the used materials play an important role. For this purpose, the safety properties (impact resistance in case of tool breakage / collision) of these weight-reduced materials have to be determined. In addition, an improvement in the acoustic behaviour of the machine is achieved by the new lightweight materials since the machine enclosure shields the distinctive sound sources.
Źródło:: Journal of Machine Engineering; 2019, 19, 2; 46-53
1895-7595
2391-8071
Pojawia się w:: Journal of Machine Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Processing With Parallel Kinematics - an Experimental Analysis
Autorzy:: Neugebauer, R.
Wabner, M.
Ihlenfeldt, S.
Powiązania:: https://bibliotekanauki.pl/articles/971120.pdf
Data publikacji:: 2008
Wydawca:: Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:: machine tool
parallel kinematics
machining
milling
Opis:: This article summarizes experimental analyses for the determination of process parameters that can be achieved in an industrial machine tool with parallel kinematics. Focus is on the examination of the machining results' dependency on position and direction. Therefore milling experiments are conducted, testing different positions and directions within the workspace. Surface quality, process forces, acceleration as well as vibration characteristics of the working platform are assessed. Based on measured frequency responses the stability limits are determined at different locations within the workspace. By these examinations it can be confirmed that the dependency of static and dynamic machine properties on position and direction has an influence on machining results. Best results are achieved in central positions of the machine used for most of respective operations. Furthermore it's represented that the machining results are comparable to conventional serial machines though parallel kinematics show a stronger dependency on direction.
Źródło:: Journal of Machine Engineering; 2008, 8, 1; 54-62
1895-7595
2391-8071
Pojawia się w:: Journal of Machine Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:: Development of High Performance Machine Tools
Autorzy:: Jędrzejewski, J.
Kwaśny, W.
Powiązania:: https://bibliotekanauki.pl/articles/971145.pdf
Data publikacji:: 2009
Wydawca:: Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:: machine tool
development
precision
performance
intelligence
Opis:: This paper presents a general characteristic of modern cutting machine tools and their role in achieving high machining performance. The determinants of machine tool development, stemming from the constant development of products and their complexity and from market demands, are discussed in detail. Special attention is devoted to the improvement of the machine tool structure and its variations created in response to the continuous and flexible increase in machining efficiency. The importance of developing multitask, hybrid and reconfigurable structures is discussed. The essence of the development of multi-spindle units as the modules having a decisive influence on machining performance, precision and costs is described. Moreover, trends in the development of feed units and distance measuring systems are presented.
Źródło:: Journal of Machine Engineering; 2009, 9, 2; 5-31
1895-7595
2391-8071
Pojawia się w:: Journal of Machine Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 12.

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

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Skocz do pozycji: 13.

Tytuł:: Amplified Piezo Actuator APA® with viscoelastic material for machine tool semi-active damping system
Autorzy:: Kras, A.
Bourgain, F.
Claeyssen, F.
Powiązania:: https://bibliotekanauki.pl/articles/99705.pdf
Data publikacji:: 2014
Wydawca:: Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:: actuator
piezoelectric
viscoelastic material
machine tool
Opis:: Modern machine tools must achieve a high precision for a better surface texture and higher flexibility for wide range of machining requirements. To fulfill these requirements, a semi-active damping system for a new generation of machine tools is proposed. The new concept is partially based on the Amplified Piezo Actuators APA® from CEDRAT Technologies. With these actuators, the dynamic behavior (stiffness and damping) of structural body components of machine tools can be controlled and adjusted to the optimum parameters. To reduce the transfer of vibrations through the active elements, a viscoelastic material was used. This article presents test results performed on the APA® with viscoelastic material. A significant reduction of the vibrational amplitude at resonance frequency was observed with additional material. The optimized quantity of viscoelastic material reduces the full stroke of the actuator only by 10 percent. At the same time, the viscoelastic material has red the tests performed on the machine tool showed significant surface texture improvement with use of the amplified piezoelectric actuator.
Źródło:: Journal of Machine Engineering; 2014, 14, 3; 83-96
1895-7595
2391-8071
Pojawia się w:: Journal of Machine Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 14.

Tytuł:: Survey of machine tool error measuring methods
Autorzy:: Kwaśny, W.
Turek, P.
Jędrzejewski, J.
Powiązania:: https://bibliotekanauki.pl/articles/100074.pdf
Data publikacji:: 2011
Wydawca:: Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:: machine tool
volumetric error
identification
method
Opis:: This paper presents the factors and needs which make it necessary to increase the accuracy of machine tools. Types of machine tool errors, their causes and ways of identifying, measuring, reducing and compensating them are described. The most effective methods of identifying machine tool errors are discussed and classified. The measuring methods and tools are compared with regard to their range of application, time consumption, cost, market availability and main limitations.
Źródło:: Journal of Machine Engineering; 2011, 11, 4; 7-38
1895-7595
2391-8071
Pojawia się w:: Journal of Machine Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 15.

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

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