Temat: Assembly - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Robotic assembly of aero-engine components
Autorzy:: Jayaweera, N.
Webb, P.
Ye, C.
Johnson, C.
Powiązania:: https://bibliotekanauki.pl/articles/1429288.pdf
Data publikacji:: 2008
Wydawca:: Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:: robotic assembly
aero-engine components
Opis:: The VITAL (EnVIronmenTALly Friendly Aero Engines) project funded by the European Commission under Framework 6 aims to provide significant reductions in aero-engine fuel burn, noise and emissions through the development of innovative design and manufacturing techniques. One method of reducing the amount of fuel burnt, and hence CO2 produced, is to reduce the weight of the engine. A significant proportion of an engine's weight is due to the large castings used to form the main non-rotating structures; the replacement of these with fabricated structures could provide a significant weight reduction. This paper describes the design and implementation of a robotic assembly cell for complex aero-engine components. A series of experiments were performed to prove the feasibility of the automated assembly process. The results presented indicate that automated robotic assembly is feasible and cost effective.
Źródło:: Journal of Machine Engineering; 2008, 8, 3; 5-16
1895-7595
2391-8071
Pojawia się w:: Journal of Machine Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Knowledge base development for assembly planning using evidence theory
Autorzy:: Kutschenreiter-Praszkiewicz, Izabela
Matuszny, Marcin
Powiązania:: https://bibliotekanauki.pl/articles/2086279.pdf
Data publikacji:: 2022
Wydawca:: Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:: assembly
evidence theory
tools selection
Opis:: This paper presents an approach to assembly planning in the early phase of product development. The product specification, workstation, environment, equipment and tools are not fully known in the early stage of product development. When comparing product variants at this stage there is a lack of data that affects the efficiency of the manufacturing process. It is therefore necessary to apply methods useful in processing incomplete and uncertain data. The main indicator which helps in comparing different product variants is manufacturing time standard. This papier is focused on assembly tool selection which is one of important data influenced assembly time. Based on the proposed algorithm and case study, a tool selection method using a decision tree induced from a training set with reduced uncertainty is presented.
Źródło:: Journal of Machine Engineering; 2022, 22, 2; 125--137
1895-7595
2391-8071
Pojawia się w:: Journal of Machine Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Assembly improvement with the use of the Schmigalla method
Autorzy:: Kutschenreiter-Praszkiewicz, Izabela
Powiązania:: https://bibliotekanauki.pl/articles/1428969.pdf
Data publikacji:: 2021
Wydawca:: Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:: assembly
Schmigalla method
changeover
layout improvement
Opis:: One of the important issues in production is the improvement of the assembly process, which involves the assembly of the product, as well as changeover and maintenance. Improving assembly, resulting from the appropriate layout of workstations, is crucial for both employees and robots performing routine assembly operations. This article discusses improving assembly using the Schmigalla method (also known as the Bloch-Schmigalla method or the triangular method), which is one of the heuristic layout planning methods. The article analyzes the selected assembly task and characterizes the main activities and equipment, on the basis of which the proper arrangement of equipment at the assembly station was determined. Based on the numerical data, the advantages of using the Schmigalla method to improve the location of the assembly station equipment are presented.
Źródło:: Journal of Machine Engineering; 2021, 21, 2; 116-130
1895-7595
2391-8071
Pojawia się w:: Journal of Machine Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Development of a neural network structure for identifying begin-end points in the assembly process
Autorzy:: Kutschenreiter-Praszkiewicz, Izabela
Powiązania:: https://bibliotekanauki.pl/articles/24084694.pdf
Data publikacji:: 2023
Wydawca:: Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:: deep learning
assembly
begin-end point
Opis:: The paper presents an approach to video-based assembly analysis using machine learning. A neural network is one of the machine learning methods that is widely studied in many engineering fields. The purpose of this paper is to develop a deep neural network structure for identifying begin-end points for a selected component assembly process. A neural network structure that effectively identifies begin-end points is proposed and an example from industry is presented. The proposed approach can prove useful in the assembly process analysis.
Źródło:: Journal of Machine Engineering; 2023, 23, 2; 100-109
1895-7595
2391-8071
Pojawia się w:: Journal of Machine Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Management of newness in an assembly system
Autorzy:: Schedin, J.
Svensson-Harari, N.
Jackson, M.
Deleryd, M.
Powiązania:: https://bibliotekanauki.pl/articles/100093.pdf
Data publikacji:: 2016
Wydawca:: Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:: newness
vehicle
quality assembly system design
Opis:: The need for new products to suit differentiated customer needs and shorter product life-cycles, forces manufacturers to change or modify products and production systems at more frequent intervals. The objective of this paper is to discuss management of newness within assembly system design in the vehicle industry. Based on a case study covering four assembly development projects, a model using the quality concept of 7M is presented to evaluate the level of newness. The results show that the model provides a promising platform for evaluation of newness.
Źródło:: Journal of Machine Engineering; 2016, 16, 1; 92-108
1895-7595
2391-8071
Pojawia się w:: Journal of Machine Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Memetic algorithm for assembly sequence planning
Autorzy:: Jankowski, T.
Powiązania:: https://bibliotekanauki.pl/articles/1429342.pdf
Data publikacji:: 2008
Wydawca:: Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:: evolutionary computing
assembly
optimisation
process planning
Opis:: The paper presents the application of a memetic algorithm to searching for the optimal sequence of the assembly of parts. Such approach is based on the use of an algorithm connecting two methods of global and local search in order to increase the effectiveness of the conducted optimisation process. Based on a proper representation of assembly sequences and a set of geometrical, topological and technological constraints, connected with the attributes of a product, it is possible to create an evolutionary model. Through proper control of the evolution process in a model, based on the appropriate selection of parameters, it is possible to achieve good results in a short period of time. Although the evolutionary algorithm does not guarantee the obtaining of optimal solutions, it has been proven, based on sample simulations, that such solutions are obtained in a repeated manner. The application of the presented evolutionary approach enables creating fast assembly sequence planning tools, indispensable in tactical planning and operational control of manufacturing processes.
Źródło:: Journal of Machine Engineering; 2008, 8, 3; 77-90
1895-7595
2391-8071
Pojawia się w:: Journal of Machine Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Development of an automated assembly process supported with an artificial neural network
Autorzy:: Bobka, P.
Heyn, J.
Henningson, J.-O.
Römer, M.
Engbers, T.
Dietrich, F.
Dröder, K.
Powiązania:: https://bibliotekanauki.pl/articles/99408.pdf
Data publikacji:: 2018
Wydawca:: Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:: assembly
machine learning
neural network
industrial robot
Opis:: A central problem in automated assembly is the ramp-up phase. In order to achieve the required tolerances and cycle times, assembly parameters must be determined by extensive manual parameter variations. Therefore, the duration of the ramp-up phase represents a planning uncertainty and a financial risk, especially when high demands are placed on dynamics and precision. To complete this phase as efficiently as possible, comprehensive planning and experienced personnel are necessary. In this paper, we examine the use of machine learning techniques for the ramp-up of an automated assembly process. Specifically we use a deep artificial neural network to learn process parameters for pick-and-place operations of planar objects. We describe how the handling parameters of an industrial robot can be adjusted and optimized automatically by artificial neural networks and examine this approach in laboratory experiments. Furthermore, we test whether an artificial neural network can be used to optimize assembly parameters in process as an adaptive process controller. Finally, we discuss the advantages and disadvantages of the described approach for the determination of optimal assembly parameters in the ramp-up phase and during the utilization phase.
Źródło:: Journal of Machine Engineering; 2018, 18, 3; 28-41
1895-7595
2391-8071
Pojawia się w:: Journal of Machine Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: A Novel Approach for the Assembly of Fabricated Aero-Engine Components
Autorzy:: Jayaweera, N.
Webb, P.
Johnson, C.
Powiązania:: https://bibliotekanauki.pl/articles/971261.pdf
Data publikacji:: 2009
Wydawca:: Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:: robotic assembly
best-fit algorithm
aero-engine components
Opis:: Currently the manufacturing of aero-engine intercase is primarily a single piece titanium casting and has slightly deteriorated material properties as compared to sheet metal parts and has long manufacturing lead time. As an alternative solution to above problems, the VITAL (Environmentally Friendly Aero Engines) project aims to design, manufacture and test the critical technologies required to develop new type of clean and low noise aero engines by developing innovative technical solutions to reduce the engine's weight, thereby reducing both fuel consumption and CO2 emission. This requires the fabrication of small and weight optimised parts which will be automatically manipulated, welded, assembled and inspected in a flexible fabrication cell. The paper introduces a novel techniques for compensating the deformation that occur in aero-engine fabricated components and potential component handling errors using standard industrial robots, an advanced end-effector, mathematical processing, non-contact metrology systems and cell control system. The system described in this paper uses in-process measurement sensors to determine the component's exact location prior to the assembly operation. The core of the system is a set of algorithms capable of best fitting measurement data to find optimal assembly of components.
Źródło:: Journal of Machine Engineering; 2009, 9, 4; 61-70
1895-7595
2391-8071
Pojawia się w:: Journal of Machine Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Autonomous assembly and disassembly – key technologies and links for the adaptive self-optimization of future circular production
Autorzy:: Ihlenfeldt, Steffen
Lorenz, Marcel
Frieß, Uwe
Fritzsche, Rayk
Powiązania:: https://bibliotekanauki.pl/articles/24084681.pdf
Data publikacji:: 2023
Wydawca:: Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:: autonomous assembly
autonomous disassembly
autonomous level
circular economy
Opis:: European industry and beyond, faces the challenge of becoming carbon neutral within an unprecedented short timeframe. An important approach to achieve this goal is the transformation of the current economy to a circular economy. In this context, the reuse of technical products as well as their recycling are in the foreground. Flexibility and adaptability are crucial for the competitiveness of companies. Therefore, adaptive and autonomous assembly and disassembly systems are the key. Classically automated assembly systems are inflexible due to a mostly rigid and predefined sequence control and are mostly strongly oriented towards economic criteria. Existing autonomous production cells, with their focus on autonomy and failure-free operation, also reach their limits in terms of adaptivity. For this reason, intelligent systems are needed that are able to act autonomously and without interference, as well as to cope with complex and cognitively demanding situations and tasks.
Źródło:: Journal of Machine Engineering; 2023, 23, 2; 5--15
1895-7595
2391-8071
Pojawia się w:: Journal of Machine Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Neural network application for time standards setting in assembly and disassembly
Autorzy:: Kutschenreiter-Praszkiewicz, Izabela
Powiązania:: https://bibliotekanauki.pl/articles/99613.pdf
Data publikacji:: 2020
Wydawca:: Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:: time standard
assembly
neural network
object-attribute-value
screwing
Opis:: Time standards belong to the key indicators of production process effectiveness. The paper discusses time standard setting in the production process. One of the important stages of the production process is assembly, which is a crucial stage in case of manufacturing customized products. The aim of the article is to show the methods of time standard setting which facilitate assembly planning. Specific goals of the article are focused on finding common attributes useful in assembly tasks characteristics and changeover, as well as finding value intervals helpful in assembly description. Shortening the product lifecycle, new product development and product customization bring about the development of a modular reconfigurable assembly line. The development of flexible assembly lines requires standards related to typical assembly tasks and tools. Reconfiguration and balancing assembly lines require a knowledge base related to time standards. This article presents examples of typical tasks, tools and time standards for planning product assembly and changeover which use the assembly and disassembly processes.
Źródło:: Journal of Machine Engineering; 2020, 20, 3; 106-116
1895-7595
2391-8071
Pojawia się w:: Journal of Machine Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:: Different structures of manufacturing systems in low production demand
Autorzy:: Grzechca, W.
Powiązania:: https://bibliotekanauki.pl/articles/100131.pdf
Data publikacji:: 2012
Wydawca:: Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:: assembly line balancing problem
heuristic methods
final results estimation
Opis:: Since more than 100 years ago a simple assembly line was introduced in the American Ford automotive factory. Nowadays we can find papers and books with description of different structures and different kinds of production. This article deals with the problem of low production demand which is coming from the market and considers three different manufacturing structures: single (straight) assembly line, U-line and assembly round table. The description of all above mentioned structures is given. The fundamental assumptions according to balancing problem are shown. Selected heuristics methods for solving assembly line balancing problem are described. Advantages and disadvantages of these structures are considered. Also numerical examples are calculated and final results are estimated (smoothness index, line efficiency, time of line, number of turns for rotating round table). At the end the conclusions and remarks are presented.
Źródło:: Journal of Machine Engineering; 2012, 12, 3; 91-104
1895-7595
2391-8071
Pojawia się w:: Journal of Machine Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 12.

Tytuł:: Sztywność zespołu wrzecionowego łożyskowanego hydrostatycznie
Rigidity of the spindle unit with hydrostatic bearings
Autorzy:: Sikora, M.
Powiązania:: https://bibliotekanauki.pl/articles/269956.pdf
Data publikacji:: 2010
Wydawca:: Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:: szlifierka
łożysko hydrostatyczne
zespół wrzecionowy
sztywność
grinder
hydrostatic bearing
spindle assembly
stiffness
Opis:: Przedstawiono wyniki analizy teoretycznej i badań doświadczalnych zespołu wrzecionowego szlifierki wcinającej do wałków. Wrzeciono było łożyskowane hydrostatycznie. W przedniej podporze zastosowano zintegrowane łożysko poprzeczno-wzdłużne, a w tylnej - poprzeczne. Wyznaczono sztywność statyczną układu wrzecionowego w funkcji ciśnienia zasilania dla wrzeciona nieobracającego się.
In the paper theoretical analysis and experimental research of the spindle unit of cylindrical grinder are presented. The spindle is equipped with hydrostatic bearings. In the front support the integrated angular (radial-axial) bearing was applied and in the back support - the radial one. Static rigidity of the spindle unit versus supply pressure for non-rotating spindle was evaluated.
Źródło:: Inżynieria Maszyn; 2010, R. 15, z. 4; 66-77
1426-708X
Pojawia się w:: Inżynieria Maszyn
Dostawca treści:: Biblioteka Nauki

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