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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
Content available remote Production system rationalisation on the example of iron foundry
Kukla S.
Archives of Foundry Engineering
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2010
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Vol. 10, iss. 2
209--212
EN
The present paper presents a systemic approach to foundry management. Thanks to production process modelling and simulation techniques, an attempt was made to synthesis many interconnected devices and numerous manufacturing stages into one production system. In the beginning, a factor analysis was carried out of the research object, which is a system of iron castings manufacture on automated foundry lines. On the basis of a simulation experiment, use the accessible production resources and manufacturing own cost of castings were analysed, depending on batch content and melting order, choice of an automatic line and the model of line fed with cast iron, sequence of order realization and the size of production lots. Simulation experiments were carried out on a computer simulation model prepared in the Arena packet produced by Rockwell Automation. Cost was estimated on the basis of additional calculation according to cost centres basing on factory spreadsheet.
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