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1
Content available Use of the Method VSM to the Identify Muda
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EN
Managing the enterprise by Lean Manufacturing concept consists in eliminating the errors and limiting the 3M (muda, mura, muri) but also increasing the efficiency of the processes which adds the value and shorting the duration of activities which are necessary but not generate the added value. Implementation of the solutions of the lean area gives measurable results, that is why lean toolbox is implemented in many economic branches. First phase of the efficiency improvements in the enterprise is the analysis of the actual status. The article presents an example of the value stream mapping method usage (VSM) for the chosen product.
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This article identifies new ways to reduce the time between the product idea and its transformation into a functioning production system, taking the whole system one step further towards the ideal completely integrated, rapid product and production development. New methods and opportunities allow for a number of improvements. In order to uncover hidden potential, the required processes must be integrated and shortened. IPA makes use of this approach by involving the various research fields of its institute in a process chain to work on further improvements. This procedure includes a common development environment called the "centre for parallel product and production development" for the step-by-step integration of product and production development processes.
EN
An infrastructure of modem production systems is based on technologically advanced machines and devices. One of the important issues in this aspect is to ensure the smooth communication among elements of the industrial automation infrastructure to ensure the quality, stability and safety of a production system as well as the right identification of resources using in production processes. The article presents a model of communication between measuring points in a production system with the use of a selective RFID gate as a result of R&D project made by DataConsult Sp. o.o. The model can be scaled and applied in different manufacturing companies. It is based on the assumption of parallel and independent communication on a configuration of industrial automation components that enable to use advanced and safety solutions of data collection, processing and sharing.
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Content available remote Informatyczne wspomaganie planowania w małych systemach produkcyjnych
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Computer aided planning of production systems is important from the perspective of setting the order of tasks and proper selection of hardware and human resources. The paper proposes the application of the management of schedules using Microsoft Project Planning converting data from Excel spreadsheets. This solution does not generate costs for the enterprises optimizes the length of production cycles, increases productivity and minimizes costs.
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Content available Logistics Engineering in a Production Company
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In the systemic approach, a production company is a complex system of objects and the relations between the objects as well as between the system and its surroundings. The large number of variables and company performance assessment indicators results in the constant search for the methods of formalising the mutual dependencies. The discipline which, through the integration of multiple processes, enables the discovery of practical solutions is logistics engineering. In Poland, the term is not very common, while in the USA (for example), logistics engineering – taking advantage of mathematical methods and cutting edge science is a widely used tool supporting the everyday business activities of companies. The article describes primary tasks of logistics engineering in relation to production companies. Furthermore, original algorithms for the improvements of company productivity are presented.
EN
In the article there is a presentation of PERT method in calculation of production tasks beginning time. Main aim was to point out activities which determine production’s beginning in convergent production system.In analysis there was an usage of complex systems theory and there were several stages of decomposition into single production streams. In the work there is a presentation of a model which sets the moment of production processes beginning in a production structure which is characterized by high level of processes’ repetitions with different production parameters.
EN
Managing company in the lean way presumes no breakdowns nor reserves in the whole delivery chain. However, achieving such low indicators is impossible. That is why in some production plants it is extremely important to focus on preventive actions which can limit damages. This article depicts the method of designating the critical damages in accordance with lean maintenance method. The article consists of two parts which make for an integral body. Part one depicts the characteristic of a realistic object, it also contains productions capabilities analysis of certain areas within the production structure. Part two depicts the probabilistic model of shaping maximal time loss basing on emptying and filling interoperational buffers.
PL
Szczupłe zarządzanie przedsiębiorstwem zakłada zero awarii urządzeń i zero zapasów w całym łańcuchu dostaw. Osiągnięcie zerowych wskaźników jest niemożliwe, dlatego w zakładach produkcyjnych duża uwaga skupiona jest na prewencyjnych działaniach ograniczających wystąpienie uszkodzeń. W artykule przedstawiona została metoda wyznaczania uszkodzeń krytycznych, zgodnie z metodyką lean maintenance. Rozważaniom został poddany przykładowy (rzeczywisty) układ produkcyjny, w którym w chwili ∆ t wystąpiło uszkodzenia na kilku różnych obiektach. Artykuł składa się z dwóch integralnych części. W pierwszej części została przedstawiona charakterystyka obiektu rzeczywistego oraz zawarte są analizy zdolności produkcyjnych poszczególnych obszarów struktury wytwórczej. Druga część przedstawia probabilistyczny model kształtowania maksymalnych strat czasu bazujących na opróżnianiu i wypełnianiu buforów międzyoperacyjnych.
EN
Complex planning algorithm and short planning cycles for production systems require innovative software tools to combine the knowledge on methodology of the planner and the specific know-how of enterprise employee. Therefore the IAF developed the FacToTuM-concept with the experience of many industrial projects. It represents a universal Software Tool Kit for the planning and configuration of production systems at industrial enterprises. In detail FacToTuM provides the analysis of operating data, the layout planning and optimizing, the dimensioning of the material flow, the simulation of production processes, the designing in 2D and 3D environment and the visualization of the results (e.g. Virtual Reality). This paper will represent the most significant advantage of FacToTuM: the interactive operation mode. Therefore it is possible to achieve good user and purchaser acceptance in planning projects. The methodological base of the approach is the participative planning process. Thus and the dialogue of interested and competitive involved employees activate an ongoing adaptation of the structuring in industrial enterprises.
EN
Systemic approach allows to see the production enterprise as a complex system of production and auxiliary facilities. In process approach, manufacturing makes the stream of materials flow through individual production cells in a mixed (serial – parallel) system, in a discreet way (in steps). Processing times are different at each stage. Element that connects individual production facilities are interoperable landfills, which perform the functions of semis storage departing from object N and magazine of deliveries for the next (N + 1) or another station. Chart flow of deliveries and acceptances at the time takes the stepped form. Parameters of steps depend on the processing time and batch size. In the actual manufacturing process (even in the long term), lines of supply and efficiency do not run parallel. The analyzed plant consists of 9 stations and buffers (warehouses). The process of manufacturing of the refrigeration appliance has a socket structure. An important part of the production is suitable schedule for the preparation of components and assembly.
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Content available remote Zastosowanie prostego algorytmu alpinisty w systemie podukcyjnym.
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PL
Przedstawiono rozwiązanie problemu doboru wielkości partii produkcyjnej z zastosowaniem 'prostego algorytmu alpinisty'. Poprawność wyników osiągniętych tą metodą zbadano poprzez ich porównanie z wynikiem uzyskanym metodą poszukiwania zupełnego. Porównanie wyników wskazuje na przydatność i poprawność działania prostego algorytmu alpinisty do rozwiązywania zadań z zakresu harmonogramowania systemów wytwórczych. Przeprowadzono analizę wyników oraz podano wnioski.
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The following paper is to introduce models of production systems presented and discussed in the literature. The models most often used are briefly described and characterized, as well as classified into two groups: in the first one manufacturing system's model is based on mathematical description of relations between parameters of the system and includes f.ex. production function and Leontief's formulas, while in the second models reflect system's structure and relations between its elements and includes f.ex. industrial dynamics model. The classification developed is useful for manufacturing systems analysis and description providing some formal background, especially when using informal, descrptive approach
EN
This article summarizes the arguments and counterarguments within the scientific discussion on identifying the enterprise’s state to evaluate its effectiveness and optimize the target functions in solving enterprise development problems. The proposed scientific and methodological approach to modeling the enterprise development management system under decentralization conditions and its practical implementation makes it possible to determine the dominant development parameters of manufacturing enterprises that influence the United Territorial Community and to timely track the impulses and space of the United Territorial Community state, taking into account the PS state as parameters for its development. The proposed analysis of the Production System state within the United Territorial Community framework and evaluating its development dynamics shows the necessity of forming a system of generalized vector-scalar, situationally oriented indicators.
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The project presents the design of production systems equipped with miniaturized devices, which are commonly used in industry. Despite the reduced scale, the modules have full functionality and reflect real-world systems. In addition, system designs provide for the possibility of scientific and research work in the design of production systems with a high level of automation.
EN
This article describes the power of the computer simulation as a tool for dynamic verification of the system parameters and logical structure in the phase of its proposal and design. It can find out the bottleneck and optimise its functionality. In this way there are possibility to reduce both cost and time. The article shows two practical cases from big fibre glass production company. In new transport system was the goal oriented to dynamically analyze capacity, define parameters like number of transporters, speed, distances between transporters and modification of logical structure to reduce blocked states. Second case was oriented to define warning levels, analyze parameters and decide whether it is possible in new production system use only one main mixer supported secondary mixers to continually prepare 23 types of lubricants for 10 tanks of final products.
EN
This paper presents the characteristics of the subsystems of the modular, didactic production system of single-stage gearboxes. The presented system is equipped with miniatures of devices commonly used in industry. The modular construction of the stand gives the possibility of free modelling of production processes and creates great opportunities for future activities of system development and its use. The paper presents the characteristics of the manufacturing, storage, transport and assembly subsystem and quality control. In the characteristics, the market recognition was presented and selected solutions and devices were described.
17
Content available remote Równoważenie linii produkcyjnej na przykładzie procesu wytwórczego obuwia
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PL
Przedmiotem pracy jest opis techniki równoważenia linii produkcyjnej. Narzędzie to umożliwia przydzielanie poszczególnych zadań procesu wytwórczego na stanowiska robocze, tak aby zminimalizować całkowity czas bezczynności. Szczególną uwagę poświęcono możliwościom usprawnienia otrzymanych rozwiązań.
EN
The aim of this article was to present balancing of the production line. This tool is useful to assign tasks in the manufacturing process at individual workstations in order to minimize the total idle time. Particular attention was paid to opportunities to improve the solutions obtained
PL
W artykule zastosowano kilka narzędzi użytych w doskonaleniu procesów produkcyjnych w przedsiębiorstwie hutniczym. Zakresem analizy objęto proces wytwarzania drutu gołego żarzonego. W tym celu dokonano identyfikacji miejsc, które należy poddać procesom doskonalenia, wykorzystując dwie metody zarządzania: analizę Pareto-Lorenza przyczyn niezgodności występujących podczas produkcji drutu oraz analizę FMEA badanego procesu. Wyniki badań pozwoliły na określenie wystąpienia możliwych zakłóceń w działaniach przez wyznaczenie stopnia ryzyka ich wystąpienia oraz znaczenia pojawienia się tych zakłóceń w odniesieniu do całego procesu. Ujawniły one również obszary, które poddane w pierwszej kolejności procesom doskonalenia przyniosą wymierne efekty. Uzupełnieniem otrzymanych wyników badań było wskazanie, za pomocą macierzy BCG, grup produktów, które należy poddać szczególnie procesowi doskonalenia.
EN
In the article were presented some tools connected with the production processes improvement. The research object is the enterprise from the metal branch. The area of analysis is production process of mild bare wire. In order to show the areas influencing the quality of processes it was carried out detailed identification with using two methods: analysis Pareto-Lorenz diagram for causes of discrepancies appearing during production process of wire and FMEA analysis of researched process. The results allowed characterising possible disturbance in action by determining the degree of the risk and meanings of these disturbances appearance with reference to the entire process. It also allowed to reveal the areas, which first subjected to improvement processes will bring notable effects. Additional element of analysis was showing, with the help of the BCG matrix, groups of products which should be subjected process of improvement in first order.
PL
Podejście systemowe pozwala zobaczyć przedsiębiorstwo produkcyjne jako złożony system urządzeń służących do wytwarzania i urządzeń pomocniczych. W podejściu procesowym to produkcja sprawia, że strumień materiałów przepływa przez poszczególne komórki o mieszanej strukturze w sposób dyskretny (w krokach). Czas przetwarzania jest inny na każdym etapie wytwarzania. Elementem łączącym poszczególne urządzenia produkcyjne są bufory (składowiska) międzyoperacyjne, które pełnią funkcje przechowywania półwyrobów wytwarzanych w obiekcie N i magazynu dostaw do następnej komórki (N + 1) lub do innego obiektu. Parametry etapów zależą od czasu obróbki i wielkości partii. Analizowany proces wytwarzania urządzenia chłodniczego ma strukturę gniazdową. Istotnym elementem produkcji jest odpowiednie planowanie wytwarzania potrzebnych komponentów i montażu, by czas wykonania zadania produkcyjnego był jak najkrótszy.
EN
A systemic approach allows to see the production enterprise as a complex system of production and auxiliary facilities. In the process approach, it is manufacturing that makes the stream of materials flow through individual production cells in a mixed (serial – parallel) system, in a discreet way (in steps). Processing times are different at each stage. The element that connects the individual production facilities is buffer storage, which functions as a storage site for semi-finished goods departing from facility N or a delivery warehouse for the next site (N + 1) or to another station. The steps’ parameters depend on the processing time and batch size. The analyzed plant consists of 9 stations and buffers (warehouses). The process of manufacturing the refrigerating appliance has a cellular layout. An important part of production is the proper scheduling of production of the necessary components and assembly, so that the time of realization of the production task is as low as possible.
20
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The paper presents the issue of computer aided simulation application in a mixed-model production systems. Computer simulation is a very powerful tool for building, testing and rebuilding production systems, especially as an aid in the decision making process. Different methods of computer simulation with the basic characterization and their main advantages and disadvantages are presented. Basing on the key features of presented simulation types, a method most proper for simulating a mixed-model production system is proposed. Simulation of a production system in Flexsim simulation software environment is presented. Conclusions on the advantages of use of computer aided simulation are given.
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