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1
Content available Wizualizacja, symulacja i wielokryterialna ocena wariantów w projektowaniu systemów produkcyjnych
Kukla Sławomir
Zarządzanie Przedsiębiorstwem
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2022
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Vol. 25, nr 3-4
21--26
EN
The paper presents issues of production processes design and improvement. In order to visualize the production system functioning and estimate its efficiency, a simulation model has been created, on which a simulation experiment was carried out. Due to many factors influencing the effectiveness of processes, it was suggested to use multi-criteria evaluation tools to choose the rational solution. Three criteria have been assumed, according to which particular improvement variants were evaluated. Also, criteria weights have been set according to the Saaty’s method, and particular solution variants have been assessed separately with respect to each criterion. On the basis of the presented course of action, the best solution has been selected from among the analysed options.
2
Content available Improving Quality and Occupational Safety on Automated Casting Lines
Kukla S.
Archives of Foundry Engineering
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2017
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Vol. 17, iss. 3
69--72
EN
The paper presents a practical example of improving quality and occupational safety on automated casting lines. Working conditions on the line of box moulding with horizontal mould split were analysed due to low degree of automation at the stage of cores or filters installation as well as spheroidizing mortar dosing. A simulation analysis was carried out, which was related to the grounds of introducing an automatic mortar dispenser to the mould. To carry out the research, a simulation model of a line in universal Arena software for modelling and simulation of manufacturing systems by Rockwell Software Inc. was created. A simulation experiment was carried out on a model in order to determine basic parameters of the working system. Organization and working conditions in other sections of the line were also analysed, paying particular attention to quality, ergonomics and occupational safety. Ergonomics analysis was carried out on manual cores installation workplace and filters installation workplace, and changes to these workplaces were suggested in order to eliminate actions being unnecessary and onerous for employees.
3
Content available Modelling and Optimization of Organization of Workplaces in a Foundry
Kukla S.
Archives of Foundry Engineering
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2016
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Vol. 16, iss. 3
55--58
EN
The paper presents a practical example of improvement of foundry production systems in terms of post-finishing of nodular iron castings produced in the conditions of bulk production for automotive industry. The attention was paid to high labour-intensive efforts, which are difficult to be subjected to mechanization and automation. The times of actions related to grinding processing of castings in three grinding positions connected with a belt conveyor were estimated with the use of a time study method. A bottleneck as well as limiting factors were specified in a system. A number of improvements were proposed, aimed at improving work organization on the castings post-finishing line. An analysis of work ergonomics at the workplace was made in order to eliminate unnecessary and onerous for the employee actions. A model of production system using the Arena software, on which a simulation experiment was conducted, was drawn up in order to visualize the analysed phenomena. The effects of the project were shown on graphs comparing times, costs, work ergonomics and overall efficiency of production equipment indicator.
4
Content available Improving the Organization of Iron Casts Finishing Processes
Kukla S.
Archives of Foundry Engineering
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2015
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Vol. 15, iss. 2 spec.
55--58
EN
The paper presents issues of production processes improvement in foundries in terms of finishing treatment of iron casts on grinding workstations. Basing on the conducted analysis of work ergonomics on the grinding line and the observation of work at workstations, a range of improvements related to organizing grinding treatment processes was proposed. In order to visualize the production system functioning and estimate its efficiency, a simulation model of a grinding line has been created, on which a simulation experiment was carried out. Due to many factors influencing the effectiveness of processes, it was suggested to use multi-criteria evaluation tools to choose the most rational solution. Three criteria have been assumed, according to which particular improvement variants were evaluated. Also, criteria weights have been set according to the Saaty’s method, and particular solution variants have been assessed separately with respect to each criterion. On the basis of the presented course of action, the best solution has been selected from among the analyzed options.
5
Modelowanie i symulacja procesów produkcyjnych
Łaba S., Waćko P.
Przemysł Spożywczy
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2009
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T. 63, nr 4
6-10
PL
W artykule omówiono modelowanie i symulację systemów produkcyjnych wspomagające planowanie produktów, projektowanie procesów, ich optymalizację i reorganizację oraz zarządzanie. Metoda ta przynosi wiele korzyści, np. obniżenie kosztów, zwiększenie efektywności, skrócenie czasu cyklu produkcyjnego. Wykorzystanie modelowania i symulacji w przemyśle spożywczym jest niewielkie, ale przewiduje się, że będzie coraz powszechniej stosowane ze względu na możliwości, jakie ze sobą niesie.
EN
In this paper modeling and simulation of production systems were described. Modeling and simulation constitute a support technique for products planning and processes` designing, their optimization and reorganization as well as management. The mentioned method brings many benefits such as: lowering of costs, increase in effectiveness, lowering of production period time etc. The use of modeling and simulation method in food industry is still unusual but it is predictable that it will become common soon since it carries along many opportunities.
6
Content available remote Modelowanie i symulacja systemów produkcyjnych w warunkach jednostkowej i małoseryjnej produkcji
Plinta D., Haniszewski J., Fujarczyk M., Kasztura M.
Inżynieria Maszyn
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2001
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R. 6, z. 3
55-64
PL
W artykule przedstawiono metodę modelowania i symulacji wykorzystywaną w projektowaniu nowych lub analizie istniejących już systemów, funkcjonujących w warunkach jednostkowej i małoseryjnej produkcji. Głównymi kryteriami oceny badanych systemów są koszty i czas realizacji zadań produkcyjnych, uwzględnione w modelu symulacyjnym. Algorytmy określania kosztów oparto na zasadach obliczania rzeczywistych kosztów stanowiskowych, na podstawie modelu klas kosztowych. Klasy kosztowe zbudowano w oparciu o zasady technologii grupowej. Referat zilustrowano przykładem z praktyki produkcyjnej.
EN
There has been presented the modelling and simulation method, which is used to design new or already existing production systems in conditions of the unit and short-series production. The main criterions of estimation of the researched systems are costs and realization time of production tasks, which are taking into account in the simulation model. The algorithms have been based on the counting of real workplace costs, basing on the costs classes model. The costs classes have been built considering the principles of group technology. To illustrate the problem some examples, derived from industry, have been enclosed.
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