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Wyświetlanie 1-15 z 45
Tytuł:
Case Study of Composite Chassis Manufacturing Process Using Low Temperature Molds Tempered with Gradual Heat Annealing Process
Autorzy:
Rządkowski, Witold
Klik, Przemysław
Tracz, Jan
Kowalik, Michał
Powiązania:
https://bibliotekanauki.pl/articles/2201751.pdf
Data publikacji:
2022
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
monocoque
manufacturing
out-of-autoclave
manufacturing process
gradual heat annealing
Opis:
This case study describes a manufacturing process of composite chassis also known as monocoque. The structure is made using carbon fibre reinforced polymers (CFRP) which are manufactured in out-of-autoclave (OOA) process from pre-impregnated carbon fabrics and aluminium alloy honeycomb core. Since the material cost is high the aim of the project was to reduce the cost of manufacturing process i.e. cost of models and moulds. Therefore, instead of high-temp models and moulds a cheaper alternative was used. It consisted of Styrofoam models made using polyurethane (PU) paste and moulds made from CFRP using wet layup process which were cured at room temperature. Such moulds had to be adapted to withstand high temperatures during pre-preg cure. This was done with gradual heat annealing process which increased the maximum service temperature from 45C to 90C. This was enough for the low-temp cure of pre-preg material, but it might be possible to increase the temperature even further. As a result, the cost of manufacturing process had been reduced by 50%.
Źródło:
Advances in Science and Technology. Research Journal; 2022, 16, 3; 12--21
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The use of lean manufacturing techniques – SMED analysis to optimization of the production process
Autorzy:
Sabadka, D.
Molnar, V.
Fedorko, G.
Powiązania:
https://bibliotekanauki.pl/articles/957893.pdf
Data publikacji:
2017
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
lean manufacturing
SMED
changeover time
Opis:
Lean is a culture of real and continuous optimization. As a concept of continuous optimization in the midst of limited resources, it must be practiced continuously as a long-term organizational norm. This paper revels why changeover time reduction is important in manufacturing industries and from the various tools and techniques available within Lean manufacturing describes mainly SMED (Single Minute Exchange of Dies) for changeover time reduction and its application in Shaft manufacturing industry. This paper also describes principles, benefits, procedures and practical application of SMED. Theoretical bases are verified in a practical part that describes the analysis and design optimization of non-productive time at changeover honing machine in a selected shaft manufacturing company. The output is the structural design of universal palettes and an evaluation of productivity due to optimization of operations of time honing gear shafts. The results achieved show considerable reduction in delay arising out of machine setting time, batch-setting time and demonstration delay.
Źródło:
Advances in Science and Technology. Research Journal; 2017, 11, 3; 187-195
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optimization of production processes using the Yamazumi method
Autorzy:
Sabadka, D.
Molnár, V.
Fedorko, G.
Jachowicz, T.
Powiązania:
https://bibliotekanauki.pl/articles/102291.pdf
Data publikacji:
2017
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
lean manufacturing
bottlenecks
Yamazumi chart
Opis:
Manufacturing companies are now placing great emphasis on competitiveness and looking for ways to utilise their resources more efficiently. This paper presents optimum efficiency improvement of the automotive transmission assembly production line by using line balancing. 3 assembly stations were selected to optimize where waste management requirements are not met for achieving the production capacity. Several measures were proposed on the assembly lines concerned to reduce operations by using eliminating unnecessary activities of the assembly processes, reducing the cycle time, and balancing manpower workload using line balancing through Yamazumi chart and Takt time. The results of the proposed measures were compared with the current situation in terms of increasing the efficiency of the production line.
Źródło:
Advances in Science and Technology. Research Journal; 2017, 11, 4; 175-182
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Low pressure carburizing in a large-chamber device for high-performance and precision thermal treatment of parts of mechanical gear
Autorzy:
Wołowiec-Korecka, E.
Korecki, M.
Klimek, L.
Kula, P.
Brewka, A.
Buczek, M.
Powiązania:
https://bibliotekanauki.pl/articles/103225.pdf
Data publikacji:
2017
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
heat treatment
vacuum carburizing
lean manufacturing
Opis:
This paper presents the findings of research of a short-pulse low pressure carburizing technology developed for a new large-chamber furnace for high-performance and precision thermal treatment of parts of mechanical gear. Sections of the article discuss the novel constructions of the device in which parts being carburized flow in a stream, as well as the low-pressure carburizing experiment. The method has been found to yield uniform, even and repeatable carburized layers on typical gear used in automotive industry.
Źródło:
Advances in Science and Technology. Research Journal; 2017, 11, 1; 253-258
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Prototyping of individual ankle orthosis using additive manufacturing technologies
Autorzy:
Wierzbicka, N.
Górski, F.
Wichniarek, R.
Kuczko, W.
Powiązania:
https://bibliotekanauki.pl/articles/102907.pdf
Data publikacji:
2017
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
ankle orthosis
additive manufacturing
reverse engineering
Opis:
The paper presents design and manufacturing process of an individualized ankle orthosis using additive manufacturing technologies and reverse engineering. Conventional processes of manufacturing of orthoses are expensive and time consuming Thus, an alternative method was proposed. The patient’s leg was 3D scanned and the orthosis was designed using a CAD system. It was then manufactured using the Fused Deposition Modelling technology, assembled and fully tested. Positive results were obtained.
Źródło:
Advances in Science and Technology. Research Journal; 2017, 11, 3; 283-288
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
RMS – system of the future or new trend in science?
Autorzy:
Gola, A.
Konczal, W
Powiązania:
https://bibliotekanauki.pl/articles/103094.pdf
Data publikacji:
2013
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
reconfigurable manufacturing system
RMS
reconfigurability
flexibility
Opis:
Manufacturing companies in the 21st century will face unpredictable, high-frequency market changes, driven by global competition. The article presents a new concept of manufacturing systems – which address these challenges - known as Reconfigurable Manufacturing Systems (RMS). The concept began in 1999 at University of Michigan and is widely developed in many scientific publications. The paper first analyses main features of RSP. The next sections are devoted to analyze basic assumptions of RMS design and technical measures of RMS. Finally, the answer for the question if the RMS has the perspective of wide industrial implementations is discussed.
Źródło:
Advances in Science and Technology. Research Journal; 2013, 7, 20; 35-41
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optymalizacja kolejności zleceń produkcyjnych ze względu na minimalną sumę opóźnień
Optimization of the sequence of production orders on account of minimum delay
Autorzy:
Dylewski, R.
Jardzioch, A.
Powiązania:
https://bibliotekanauki.pl/articles/153463.pdf
Data publikacji:
2012
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
dynamiczne środowisko produkcyjne
minimalizacja sumy opóźnień
sterowanie systemami produkcyjnymi
dynamic manufacturing environment
minimum delay
manufacturing system control
Opis:
W artykule rozważany jest problem ustalania kolejności wprowadzania zleceń do produkcji w dynamicznym środowisku produkcyjnym. Przyjęto założenie, że możliwe jest dodawanie kolejnych zleceń produkcyjnych w trakcie pracy systemu wytwórczego. Zaproponowano nową metodę wyznaczania takiej kolejności zleceń, która jest optymalna ze względu na minimalną sumę opóźnień. Metoda ta daje lepsze rozwiązania niż metoda minimalnego terminu realizacji, czasu obróbki, czy zapasu czasu.
According to the prevailing marketing trend that seeks to fulfil the customer's needs in their entirety, timely execution of production orders became the main criterion for evaluation of the quality of the company's performance. One way of achieving this aim is a proper planning of technological processes and a proper arrangement of production orders to be executed. This paper investigates the issue of sequencing the production orders in a dynamic manufacturing environment. It is assumed that it is possible to add further production orders while the manufacturing system is in operation. A new method for determining the sequence of production orders is proposed; the method is optimal with regard to minimizing the sum of tardiness. The algorithm designed allows deciding whether the base sequence, determined by the minimum deadline calculation, is optimal with regard to minimizing the sum of tardiness. Otherwise, a new sequence of production orders that is optimal in terms of minimizing the sum of tardiness is determined. The method yields better results than the method of minimum deadline, machining time, or time reserve.
Źródło:
Pomiary Automatyka Kontrola; 2012, R. 58, nr 6, 6; 527-529
0032-4140
Pojawia się w:
Pomiary Automatyka Kontrola
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Supporting Welding Work in the Aspect of Increasing Production Process Eciency
Autorzy:
Lonkwic, Paweł
Tofil, Arkadiusz
Powiązania:
https://bibliotekanauki.pl/articles/2201902.pdf
Data publikacji:
2023
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
production optimisation
welding equipment
welding
manufacturing process
Opis:
The publications increasingly describe the support of production processes in both manufacturing and assembly areas. The support in industry is due, among other things, to the insufficient manpower, the need to improve productivity or to increase reliability of production in terms of errors. This article presents an example of an industrial implementation in the welding area. The main objective of the application of the presented example was to replace a commercial product and to speed up the manufacturing process of an axisymmetric workpiece of the sleeve type. The presented proposal was implemented in a company where welding is the main manufacturing technology.
Źródło:
Advances in Science and Technology. Research Journal; 2023, 17, 1; 8--14
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Elastyczność systemów produkcyjnych w kontekście dynamiki produkcji
Flexibility of production systems in the context of the production dynamics
Autorzy:
Stamirowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/395350.pdf
Data publikacji:
2011
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
projektowanie
zautomatyzowany system produkcyjny
elastyczny system produkcyjny
ESP
FMS
nastawialny elastyczny system produkcyjny
FFMS
designing of an automated manufacturing system
flexible manufacturing system (FMS)
adjustable flexible manufacturing system
Opis:
Elastyczność produkcji charakteryzująca się możliwością reagowania na zmiany wielkości produkcji i technologiczny rozwój produktu uważana jest za jeden z podstawowych sposobów odpowiedzi na wymagania rynków. Intensywne inwestowanie w elastyczność jest jednak poważnym obciążeniem finansowym dla rywalizujących ze sobą firm. Stało się to przyczyną poszukiwania nowego podejścia do projektowania zautomatyzowanych systemów produkcyjnych, które pozwoliłoby zapewnić systemowi wymagany poziomem elastyczności przy względnie umiarkowanych kosztach. Powstają koncepcje budowy systemów o elastyczności odpowiadającej charakterowi bieżącej produkcji i posiadajacych w przyszłości możliwość przystosowania do określonego niepewnością rozwoju produktu. Znaczenie tego tematu potwierdzane jest wzrostem zainteresowania przedsiębiorstw stawiających pierwsze kroki na polu elastycznej auomatyzacji. Jedna z koncepcji proponuje systemy o wymaganej zgodnej z potrzebami elastyczności o nazwie Focused Flexibility Manufacturing Systems (FFMS).
Flexibility is related to the technological development of a product and to frequent shifts in rate of production. However, investment in flexibility is a serious finacial burden for many companies, which is why manufacturing system providers seek new solutions for desingning systems of required flexibility at moderate costs. The idea is to construct a system of flexibility suited for a current manufacturing cycle while capable of being adjusted to the future development of the product, which as of today is unforseeable. The singnificance of this concept is confirmed by an increased interest from the new enterprises in the field of flexible automatisation. One of the concepts introduces a system called Focused Flexibility Manufacturing Systems (FFMS).
Źródło:
Postępy Nauki i Techniki; 2011, 9; 38-51
2080-4075
Pojawia się w:
Postępy Nauki i Techniki
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of additively manufactured polymer composite prototypes in foundry
Autorzy:
Kuczko, W.
Wichniarek, R.
Górski, F.
Buń, P.
Zawadzki, P.
Powiązania:
https://bibliotekanauki.pl/articles/957963.pdf
Data publikacji:
2015
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
additive manufacturing
Fused Deposition Modelling
foundry tooling
Opis:
The paper presents a method, developed by the authors, for manufacturing polymer composites with the matrix manufactured in a layered manner (via 3D printing – Fused Deposition Modeling) out of a thermoplastic material. As an example of practical application of this method, functional prototypes are presented, which were used as elements of foundry tooling – patterns for sand molding. In case of manufacturing prototype castings or short series of products, foundries usually cooperate with modeling studios, which produce patterns by conventional, subtractive manufacturing technologies. If patterns have complex shapes, this results in high manufacturing costs and significantly longer time of tooling preparation. The method proposed by the authors allows manufacturing functional prototypes in a short time thanks to utilizing capabilities of additive manufacturing (3D printing) technology. Thanks to using two types of materials simultaneously (ABS combined with chemically hardened resins), the produced prototypes are capable of carrying increased loads. Moreover, the method developed by the authors is characterized by manufacturing costs lower than in the basic technology of Fused Deposition Modeling. During the presented studies, the pattern was produced as a polymer composite and it was used to prepare a mold and a set of metal castings.
Źródło:
Advances in Science and Technology. Research Journal; 2015, 9, 26; 20-27
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mechanical properties of parts of medical components produced using additive manufacturing technologies
Autorzy:
Górski, F.
Wichniarek, R.
Kuczko, W.
Burdzińska, M.
Jankowska, M.
Powiązania:
https://bibliotekanauki.pl/articles/102279.pdf
Data publikacji:
2017
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
additive manufacturing
slings
mechanical properties
medical devices
Opis:
The paper presents results of tests conducted on the elements of medical devices - slings used in medical lifts - manufactured using additive technologies. The project assumed to produce 100 samples of clips with varying design, material and orientation parameter. Samples were manufactured using FDM and SLA processes and then tested for mechanical strength, load transmission and functionality, using certified equipment. The paper shows full methodology and the obtained test results.
Źródło:
Advances in Science and Technology. Research Journal; 2017, 11, 2; 166-171
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Nowoczesne metody wytwarzania w rzeźbiarstwie wykorzystujące podejście inżynierii odwrotnej
Modern manufacturing methods in sculpture using a reverse engineering approach
Autorzy:
Giersberg, Ł.
Łukaszewicz, A.
Powiązania:
https://bibliotekanauki.pl/articles/395615.pdf
Data publikacji:
2011
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
inżynieria odwrotna
wytwarzanie
CAD/CAM
reverse engineering
manufacturing
Opis:
W artykule omówiono przebieg procesu wytwarzania rzeźby kamiennej przy pomocy siedmioosiowego robota przemysłowego, z wykorzystaniem oprogramowania CAM (przygotowanie i ustawienie modelu w programie CAD, tworzenie programu obróbkowego z wykorzystaniem oprogramowania CAM, przeprowadzenie obróbki), oraz porównanie z klasycznymi metodami wytwarzania.
In this article, the process of manufacturing sculptures using reverse engineering methods and modern systems of computer-aided design and manufacturing CAD/CAM was shown.
Źródło:
Postępy Nauki i Techniki; 2011, 6; 172-178
2080-4075
Pojawia się w:
Postępy Nauki i Techniki
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Prototyping of cosmetic prosthesis of upper limb using additive manufacturing technologies
Autorzy:
Radosh, A.
Kuczko, W.
Wichniarek, R.
Górski, F.
Powiązania:
https://bibliotekanauki.pl/articles/102410.pdf
Data publikacji:
2017
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
upper limb
additive manufacturing
cosmetic prosthesis
medical prototype
Opis:
This paper describes prototyping of an individualized cosmetic arm prosthesis. Aim of the studies was to obtain an anatomically correct, lightweight prosthesis. It was accomplished using additive manufacturing technology of fused deposition modeling. The data was obtained by 3D scanning. An experimental concept of dual extrusion of two different materials was applied – the prosthesis was divided into an elastic shell and a rigid core, manufactured in one process. Obtained results were positive.
Źródło:
Advances in Science and Technology. Research Journal; 2017, 11, 3; 102-108
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Geometrical Accuracy of Threaded Elements Manufacture by 3D Printing Process
Autorzy:
Budzik, Grzegorz
Dziubek, Tomasz
Kawalec, Andrzej
Turek, Paweł
Bazan, Anna
Dębski, Mariusz
Józwik, Jerzy
Poliński, Przemysław
Kiełbicki, Mateusz
Kochmański, Łukasz
Oleksy, Mariusz
Cebulski, Józef
Paszkiewicz, Andrzej
Kuric, Ivan
Powiązania:
https://bibliotekanauki.pl/articles/2201896.pdf
Data publikacji:
2023
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
additive manufacturing
surface roughness
computer measurement system
threaded elements
Opis:
Additive processes allow for almost any manufacturing of screw-threaded joint elements. However, this requires knowledge of the geometrical relationships of a threaded itself and the strength of materials from which the screw-threaded joint is made. Thanks to the development of research models and conducting tests related to dimensional accuracy and surface roughness, it was possible to test the models made by MEX process of ABS-M30, PLA, ABS, PETG materials, and PolyJet process from RGD720 polymer material.In the case of measurements carried out on the MarSurf XC20 system, the internal and external thread profile was obtained.Measurements of the surface roughness of the printed models were made using the Taylor Hobson TalyScan 150 profilometer. Based on the obtained surface, following the ISO 25178-2 standard, selected parameters were determined.
Źródło:
Advances in Science and Technology. Research Journal; 2023, 17, 1; 35--45
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
CNC milling machine precision analysis through numerical modelling
Autorzy:
Svetlík, J.
Demeč, P.
Kráľ, J.
Powiązania:
https://bibliotekanauki.pl/articles/102601.pdf
Data publikacji:
2017
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
accuracy of manufacturing machine
virtual prototyping
modal analysis
virtual model
Opis:
The motive behind the effort to make virtual prototyping more sophisticated is first of all cost reduction of manufacturing machine design, followed by reduction of lead time for development, prototyping and testing of the pre-manufacturing machine series. This article deals with the analysis of manufacturing precision of a 3-axial, numerically controlled milling machine. The methodology for precision analysis rests on a selected simplified numerical calculation model of a manufacturing machine on which virtual machining has been conducted. The mechanical inaccuracy itself is calculated by computer via the FEM analysis. The results are processed for visualization by the Excel software.
Źródło:
Advances in Science and Technology. Research Journal; 2017, 11, 2; 212-219
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
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