Autor: Wabner, M. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Potential of Manipulating the Damping Properties of Parallel Kinematic Machine Tools
Autorzy:: Wabner, M.
Grzejszczyk, S.
Neugebauer, R.
Powiązania:: https://bibliotekanauki.pl/articles/971111.pdf
Data publikacji:: 2008
Wydawca:: Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:: machine tool
parallel kinematics
simulation
active damping
Opis:: Parallel kinematics with a higher end-effector degree of freedom such as hexapods and pentapods consist of a large number of joints and slender struts. However, it is only possible to create comparably low levelsof bearing and strut bending stiffness atreasonable expense due to the limited construction space. That means that these structures are very susceptible to vibration. Even in the low-frequency range they have a large number of relevant eigenmodes that are only dampened slightly. Simultaneously, it is difficult to analyze vibrational properties due to coupled eigenmodes, which also makes it difficult to discover ways to remedy this situation. This article will take the example of a pentapod to analyze the dynamic properties of slightly dampened parallel kinematics by simulation to study potential means of manipulating it. This will include a description of the model formation of the mechanical system. The article will also address ways of reducing model size and using various simulation environments to boost analysis efficiency. Finally, both passive and active strategies will be studied and evaluated for boosting damping. Amongst others it could be shown that it is not necessary to damp every of the five kinematic chains to achieve effective improvement of the system damping behaviour.
Źródło:: Journal of Machine Engineering; 2008, 8, 1; 63-76
1895-7595
2391-8071
Pojawia się w:: Journal of Machine Engineering
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 2.

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

Artykuł

Zmień widok

na półce

Skocz do pozycji: 3.

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

Zmień widok

na półce

Informacja

Wyszukujesz frazę "Wabner, M." wg kryterium: Autor

Źródło danych

Dostawca treści

Kolekcja

Rok wydania

Wydawca

Temat

Autor

Typ dokumentu

Język