Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

English (EN)·Polski (PL)·Yкраїнський (UK)
Przejdź do strony domowej biblioteki Centralna Biblioteka Wojskowa Link otwiera się w nowym oknie Logo biblioteki Prolib Integro - strona głównaCentralna Biblioteka Wojskowa

Wyszukujesz frazę "machining process" wg kryterium: Temat

  Lista filtrów
Wyrównaj
Wyświetlanie 1-15 z 40
Tytuł:
A study of low-frequency vibration-assisted bandsawing of metallic parts
Autorzy:
Tandler, Tobias
Stehle, Thomas
Möhring, Hans-Christian
Powiązania:
https://bibliotekanauki.pl/articles/24084667.pdf
Data publikacji:
2023
Wydawca:
Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:
cutting process
machining
metal cutting
Opis:
Sawing is often the first work step in the metal cutting production chain. Especially for larger workpieces, bandsawing is used for this purpose. Nevertheless, studies on sawing have led a niche existence in the research landscape for a long time. However, as a result of the optimization of manufacturing processes in terms of economic efficiency, bandsawing is increasingly becoming the focus of research, since there are still saving potentials here. The aim of this paper is to investigate the extent to which the bandsawing process can be influenced by active, low-frequency vibration superimposition in the feed direction. First, analogue tests were carried out and parameter combinations were determined which have a positive influence on the process. Subsequently, these parameter combinations were investigated on a real sawing machine with an excitation unit, analysing the extent to which the results from the analogue tests could be transferred to the real process.
Źródło:
Journal of Machine Engineering; 2023, 23, 2; 110-122
1895-7595
2391-8071
Pojawia się w:
Journal of Machine Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Algorithm for ISO 14649 (STEP-NC) feature recognition
Autorzy:
Pobożniak, J.
Powiązania:
https://bibliotekanauki.pl/articles/407339.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
ISO 14649
ISO 10303
machining feature recognition
STEP-NC
CNC machine tool programming
computer aided process planning
CAD/CAPP/CAM integration
Opis:
The paper focuses on the algorithm for the recognition of manufacturing features defined in ISO 14649 (STEP-NC). First, the features defined in STEP-NC standard are discussed and then commonly used feature recognition methods are presented. Then the developed algorithm for recognition is presented in details starting with the discussion of STEP-NC features from the point of view of their recognition. The steps of the algorithm responsible for the recognition of profile based, transition and group features are presented. The software developed to verify the algorithm is also described. The final part includes the directions for the future research works. This paper adds to the works aimed to strengthen the position and use the full benefits of this new ISO 14649 standard.
Źródło:
Management and Production Engineering Review; 2013, 4, 4; 50-58
2080-8208
2082-1344
Pojawia się w:
Management and Production Engineering Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis and simulation of nonlinear self-excited vibrations in turning
Autorzy:
Zeleny, J.
Repak, T.
Fojtu, P.
Powiązania:
https://bibliotekanauki.pl/articles/1429152.pdf
Data publikacji:
2008
Wydawca:
Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:
machine tool
machining
machining process
self-excited vibrations
Opis:
Commonly applied theories of self-excited vibrations in machine tools are prevailingly based on frequency domain analysis of linear models and are devoted in most cases only to evaluation of stability limits of strictly linear systems. In this way, the behaviour of more stable or more unstable systems cannot be studied and analyzed. Certain important nonlinear effects cannot be studied as well for limitations connected with classical representation of systems only in the frequency domain. Evaluation of stability by analysis of nonlinear systems in time domain has not been applied until now. The paper shows a new approach based on interpretation of the self-excited vibration systems as nonlinear servo-systems. With this approach, linear and nonlinear systems of any degree of stability can be studied by combination of frequency and time-domain methods. This can considerably contribute to better understanding of complex phenomena in various regimes and special situations.
Źródło:
Journal of Machine Engineering; 2008, 8, 4; 68-79
1895-7595
2391-8071
Pojawia się w:
Journal of Machine Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of X-S Control Cards to Parameter Control in the Machining Process of Piston Castings for Internal Combustion Engines
Autorzy:
Krępa, Adam
Piątkowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/2126905.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
control cards
casting quality
machining of castings
SPC
Statistical Process Control
karty kontrolne
jakość odlewów
obróbka odlewów
statystyczna kontrola procesu
Opis:
This article discusses the possibility of using a two-track X-S control card on a Mesas device to control the production process parameters of piston castings for combustion engines. The research was carried out at the Federal-Mogul Gorzyce company. The basis for estimating the variability of the process results from the mean value (X) is the standard deviation (S). Thanks to specially designed measuring stations that use algorithms to calculate process indicators (Cp and/or Cpk) and their visualization, the cost of manufacturing products and the number of non-compliant products (scraps) are reduced. The process stability was investigated by measuring the key dimensions of the piston casting in a specific population and a given measurement cycle. Taking into account the precision of details, their technical condition, and surface quality, the production machines and cutting tools were optimally selected. It has been found that an important element of the effective use of Statistical Process Control (SPC) are trained/experienced operators who can correctly interpret the resulting control chart forms.
Źródło:
Archives of Foundry Engineering; 2021, 21, 4; 116--120
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Approach for the development of heuristic process planning tool for sequencing NC machining operations
Autorzy:
Berger, U.
Kretschmann, R
Arnold, K P
Minhas, S
Powiązania:
https://bibliotekanauki.pl/articles/1395585.pdf
Data publikacji:
2008
Wydawca:
Polskie Towarzystwo Promocji Wiedzy
Tematy:
machining process planning
NC (numerical control)
graph theory
heuristic algorithm
Opis:
This chapter deals with the process planning for sequencing NC (numerical control) machining operations. This task of selecting and ordering of machining operations is still done manually in principle. In order to overcome this problem, an approach for enabling the automatic preparation of work plans with methods known from the graph theory is introduced in this chapter. Therefore a work plan is mapped into a directed graph in a mathematically defined way. Based on that, it is possible to use algorithms to find the shortest path and a Hamiltonian path inside this directed graph as optimal sequenced solution under given requirements. Thus, the work plan is structured and re-ordered. Finally the corresponding NC machining code will be generated and distributed to the machinery.
Źródło:
Applied Computer Science; 2008, 4, 2; 17-41
1895-3735
Pojawia się w:
Applied Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Autonomous machining – recent advances in process planning and control
Autorzy:
Dittrich, Marc-André
Denkena, Berend
Boujnah, Haythem
Uhlich, Florian
Powiązania:
https://bibliotekanauki.pl/articles/99503.pdf
Data publikacji:
2019
Wydawca:
Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:
machine tool
process planning
adaptive machining
machine learning
Opis:
While autonomous driving has come close to reality over the recent years, machining is still characterised by many manual tasks and prone to costly errors. In this article, an overview is given about the potential of autonomous machining and uprising technologies that support this vision. For that purpose, a definition of autonomous machine tools and the required elements is presented. Next, selected elements of an autonomous machine tool, e.g. sensory machine components and control loops, are discussed. Finally, some insights into ongoing research projects regarding the use of machine learning for process planning and control are given.
Źródło:
Journal of Machine Engineering; 2019, 19, 1; 28-37
1895-7595
2391-8071
Pojawia się w:
Journal of Machine Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparative Analysis of the Production Process of a Flange-Type Product by the Hybrid and Traditional Method with the Use of Simulation Methods
Autorzy:
Terelak-Tymczyna, Agnieszka
Bachtiak-Radka, Emilia
Jardzioch, Andrzej
Powiązania:
https://bibliotekanauki.pl/articles/2067547.pdf
Data publikacji:
2022
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
machining
hybrid machining
VSM
SLM
process simulation
cost of the production
energy analysis
Opis:
In the era of Industry 4.0, the digitization of production processes is one of the important elements contributing to the reduction of uncertainty related to the implementation of new production methods. The worldwide epidemic situation and its constraints have resulted in supply chain continuity problems. These problems make enterprises look for the possibility of producing products that they need at the moment and which they cannot obtain from the market. In special cases, this may also apply to spare parts necessary to maintain the continuity of production. The main reason for research on comparing production processes is meeting the challenges related to the pandemic situation and problems in maintaining timeliness, flexibility, and continuity of the supply chain. The first stage of the research was to visualize the course of the process and determine the lead times for both production methods. For further analysis, a digital process model was used to compare the hybrid and the classical method to check the viability of the interchangeability of methods for the production process of the flange part. The interchangeability of production methods was dictated by problems related to the supply of components for the execution of orders. The article simulates the model for unit and small-lot production in batches of 10 and 100 pieces, considering such aspects as: order completion time, energy consumption of the process, production costs, taking into account the classic and hybrid methods. The conducted research was aimed at determining the profitability of the production of flange-type products by means of classical processing and hybrid and checking the interchangeability of production methods in accordance with quality requirements as well as reducing uncertainty with the implementation of new production systems in changing market conditions. The simulations show that the use of hybrid production is recommended for unit production. In the case of small-lot production, already with 10 items, production in the traditional process is 21% cheaper, and for the production of 100 items, the cost of traditional production is reduced by 33% compared to hybrid production.
Źródło:
Advances in Science and Technology. Research Journal; 2022, 16, 1; 231--242
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparative study of machining technology selection to manufacture large-size components of offshore constructions
Autorzy:
Deja, M.
Siemiątkowski, M.
Sender, P.
Powiązania:
https://bibliotekanauki.pl/articles/259601.pdf
Data publikacji:
2017
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
off-shore construction
heavy mechanical component
multi-axis machining centre
process planning
Opis:
The focus of this paper is on process planning for large parts manufacture in systems of definite process capabilities, involving the use of multi-axis machining centres. The analysis of machining heavy mechanical components used in off-shore constructions has been carried out. Setup concepts applied and operation sequences determined in related process plans underwent studies. The paper presents in particular a reasoning approach to setup sequencing and machine assignment in manufacturing large-size components of offshore constructions. The relevant reasoning mechanism within a decision making scheme on generated process plan is shown based on a case study derived from the offshore sector. Recommendations for manufacture of selected exemplary and typical parts were formulated.
Źródło:
Polish Maritime Research; 2017, S 1; 38-45
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Database of multi-variant machining process plan
Autorzy:
Gola, Ł.
Powiązania:
https://bibliotekanauki.pl/articles/409500.pdf
Data publikacji:
2014
Wydawca:
Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
Tematy:
Database
multi-variant machining process plan
access
Opis:
This paper presents database of multi-variant machining process plan. This database is a part of CAPP (Computer Aided Process Planning) – prototype system, which was built on the basis of algorithm generating multi-variant process plan. Database was implemented to Microsoft Access 2010.
Źródło:
Research in Logistics & Production; 2014, 4, 3; 201-207
2083-4942
2083-4950
Pojawia się w:
Research in Logistics & Production
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
En route to intelligent wood machining – current situation and future perspectives
Autorzy:
Möhring, H.-Christian
Eschelbacher, Sarah
Güzel, Kamil
Kimmelmann, Martin
Schneider, Matthias
Zizelmann, Christoph
Häusler, Andreas
Menze, Christian
Powiązania:
https://bibliotekanauki.pl/articles/99542.pdf
Data publikacji:
2019
Wydawca:
Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:
wood machining
process optimisation
monitoring and control
Opis:
Wood materials are an important part of our daily life. Besides furniture, doors and window elements, parquet floors, veneering, ply wood, chip- and fibreboards, also structural elements for buildings are typical products. Due to the specific properties, variety and complexity of natural wood, wood materials and wood composites, the machining of parts made out of these materials exhibits specific challenges. In order to further improve productivity, quality and efficiency in wood machining, innovative solutions with respect to tool technology, process planning, machinery, process monitoring and intelligent control are necessary. This keynote paper reviews and summarizes scientific developments in wood machining in recent years. Furthermore, exemplary current an ongoing research activities are introduced. Finally, the paper presents and discusses future potentials regarding new approaches for intelligent process control in wood machining.
Źródło:
Journal of Machine Engineering; 2019, 19, 4; 5-26
1895-7595
2391-8071
Pojawia się w:
Journal of Machine Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fuzzy modeling and parametric analysis of non-traditional machining processes
Autorzy:
Chakraborty, Shankar
Das, Partha Protim
Powiązania:
https://bibliotekanauki.pl/articles/406928.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
non-traditional machining process
fuzzy model
process parameter
response
interaction plot
Opis:
The application of artificial intelligence (AI) in modeling of various machining processes has been the topic of immense interest among the researchers since several years. In this direction, the principle of fuzzy logic, a paradigm of AI technique, is effectively being utilized to predict various performance measures (responses) and control the parametric settings of those machining processes. This paper presents the application of fuzzy logic to model two non-traditional machining (NTM) processes, i.e. electrical discharge machining (EDM) and electrochemical machining (ECM) processes, while identifying the relationships present between the process parameters and the measured responses. Moreover, the interaction plots which are developed based on the past experimental observations depict the effects of changing values of different process parameters on the measured responses. The predicted response values derived from the developed models are observed to be in close agreement with those as investigated during the past experimental runs. The interaction plots also play significant roles in identifying the optimal parametric combinations so as to achieve the desired responses for the considered NTM processes.
Źródło:
Management and Production Engineering Review; 2019, 10, 3; 111-123
2080-8208
2082-1344
Pojawia się w:
Management and Production Engineering Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Implementation of an integrated management information system to a sample machine industry enterprise
Implementacja zintegrowanego systemu informatycznego w przykładowym przedsiębiorstwie przemysłu maszynowego
Autorzy:
Gunia, G.
Powiązania:
https://bibliotekanauki.pl/articles/340023.pdf
Data publikacji:
2014
Wydawca:
Polskie Towarzystwo Zarządzania Produkcją
Tematy:
integrated information systems
production process
machining industry
zintegrowane systemy informatyczne
proces produkcyjny
przemysł maszynowy
Opis:
The article briefly characterises a model of implementing integrated information systems. Next, it describes realization effects of subsequent stages of preimplementation operations in a sample enterprise from machine industry: starting from organisational analysis of the enterprise, through a model of production process realization and a model of integrated information system, ending on the schedule of implementation realization. Finally, the effects of integrated management information system implementation and current directions of system development in an enterprise are presented.
W artykule krótko scharakteryzowano model implementacji zintegrowanych systemów informatycznych. Następnie opisano wyniki realizacji kolejnych etapów prac przedwdrożeniowych w przykładowym przedsiębiorstwie przemysłu maszynowego: począwszy od analizy organizacyjnej przedsiębiorstwa, poprzez model realizacji procesu produkcyjnego i model ZSI, na harmonogramie realizacji wdrożenia kończąc. Na zakończenie przedstawiono efekty wdrożenia ZSI oraz bieżące kierunki rozwoju systemu w przedsiębiorstwie.
Źródło:
Zarządzanie Przedsiębiorstwem; 2014, 17, 3; 16-26
1643-4773
Pojawia się w:
Zarządzanie Przedsiębiorstwem
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of cooling lubricants on the surface roughness and energy efficiency of the cutting machine tools
Autorzy:
Jersák, J.
Simon, S.
Powiązania:
https://bibliotekanauki.pl/articles/265834.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
machining
turning
milling
process fluids
minimum quantity lubrication
chropowatość powierzchni
smar chłodzący
narzędzia skrawające
obróbka skrawaniem
Opis:
The Technical University of Liberec and Brandenburg University of Technology Cottbus-Senftenberg investigated the influence of cooling lubricants on the surface roughness and energy efficiency of cutting machine tools. After summarizing the achieved experimental results, the authors conclude that cooling lubricants extensively influence the cutting temperature, cutting forces and energy consumption. Also, it is recognizable that cooling lubricants affect the cutting tools lifetime and the workpiece surface quality as well. Furthermore, costs of these cooling lubricants and the related environmental burden need to be considered. A current trend is to reduce the amount of lubricants that are used, e.g., when the Minimum Quantity Lubrication (MQL) technique is applied. The lubricant or process liquid is thereby transported by the compressed air in the form of an aerosol to the contact area between the tool and workpiece. The cutting process was monitored during testing by the three following techniques: lubricant-free cutting, cutting with the use of a lubricant with the MQL technique, and only utilizing finish-turning and finish-face milling. The research allowed the authors to monitor the cutting power and mark the achieved surface quality in relation to the electrical power consumption of the cutting machine. In conclusions, the coherence between energy efficiency of the cutting machine and the workpiece surface quality regarding the used cooling lubricant is described.
Źródło:
International Journal of Applied Mechanics and Engineering; 2017, 22, 3; 779-787
1734-4492
2353-9003
Pojawia się w:
International Journal of Applied Mechanics and Engineering
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:
Influence of Selected Diagnostic Parameters on the Quality of AWJ Cutting Surface
Autorzy:
Wala, Tomasz
Lis, Krzysztof
Powiązania:
https://bibliotekanauki.pl/articles/2067548.pdf
Data publikacji:
2022
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
waterjet machining
quality machine surface
monitoring AWJ process
Opis:
The article presents a review of research methods for the cutting process using the abrasive waterjet machining. The focus was on assessing the possibility of monitoring the cutting process based on the parameters available for direct or indirect measurement. An attempt was made to evaluate their influence on the machined surface after treatment with the abrasive cutting method. These parameters include, inter alia, vibrations of the cutting head, force effects on the head support structure and the material to be cut, dynamic properties of the machine support structure and high pressure pumps. As part of the own research, correlation was sought for the registered selected signal characteristics with the cutting parameters responsible for the process course and the parameters related to the obtained machined surface. For this purpose, a model of the deflection angle of the abrasive waterjet was proposed, which qualitatively determines the condition of the surface after cutting. The angle of inclination of the abrasive waterjet is determined on the basis of the registration of the feed force during the cutting process. The research on surface topography was extended by an attempt to determine the surface roughness by measuring vibrations and looking for correlation between the displacements of the cutter head tip and the measured roughness height profile. These tests also allowed the identification of selected frequencies that clearly result from the set parameters of the cutting process. The last stage of the research was to monitor the cutter head behaviour using a deformation sensor as another concept for recording the forces during the cutting process. Finally, the proposed methodology was characterized in the context of its usefulness in the on-line process monitoring and supervision system.
Źródło:
Advances in Science and Technology. Research Journal; 2022, 16, 1; 129--140
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 40

Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies