The first part of the paper discusses the role of modelling and simulation techniques for production processes in today's modern assembly enterprise, in conditions of: serious market competition and common globalization of the economy; higher and higher quality requirements and the minimization of widely understood manufacturing costs; the requirements for continuous organization improvement and technological flexibility during implementing of automated and robotized systems [1,2,3,4]. The basic information concerning the statistical MTBF parameter and its influence on production productivity (and the KPI - OEE parameter) [1,5] and the analysed technological process of dashboard assembly into the car body taken from industrial practice is shown. Particularly the structure and organisational schedule (figures, schemas, photos), sequence of operations, results of timekeeping observations of assembly line is presented. In the analysed case it was assumed that the quantity of dashboards assembled to the car bodies in the particular time intervals is equal and is carried out to the same standards. For the discussed technological process of assembly of the dashboard to the car body the sequence of operations carried out and procedures resulted directly from the technological process itinerary and it is carried out with a so called serial flow without the possibility of returns or the bypassing of assembly standards. The graph of the operation and procedure sequence for the multipurpose car during assembly of the dashboard to the car body is presented [6].

The assembly section simulation model was created based on the organization schedule of the real section for the assembly of the dashboard to the car body during the final assembly performed using the FlexSim software was presented. The main target of the modelling and simulation was the comparative analysis of the realized assembly process with the simulation model taking into consideration the mean time between failures of the manipulator with respect to its efficiency.

The final part of the paper presents the results and conclusions from the tests and analyses conducted. As the results from the simulation research shows, the efficiency of the analysed variants of the assembling section of the cockpit assembly to the car body decreases in accordance with increasing number of failures in analysed work-time.

1

V. Alia, "Sredni okres miedzyawaryjny zasilacza elektrycznego", Utrzymanie Ruchu, 4, 38-39, 2008.

2

P. Lonkwic, "Linie produkcyjne - nowoczesne systemy produkcji", Design News Polska, 5, 54-58, 2008.

3

T. Sawik, "Production planning and scheduling in flexible assembly systems", Springer-Verlag, 1999. doi:10.1007/978-3-642-58614-9

4

B. Rekiek, A. Delchambre, "Assembly line design, The balancing of mixed-model hybrid assembly lines with genetic algorithms", Springer-Verlag, London, 2006.

5

A.K.S. Jardine, A.H.C. Tsang, "Maintenance, Replacement, and reliability. Theory and Applications", Taylor Francis Group, Boca Raton, 2006.

6

Research report, DS 22-495/08, ZPT-IMt PP, unpublished materials.

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