Abstract
The problem of production flow in manufacturing systems is analyzed. The machines can be operated by workers or by robots, since breakdowns and human factors destabilize the production processes that robots are preferred to perform. The problem is how to determine the real difference in work efficiency between humans and robots. We present an analysis of the production efficiency and reliability of the press shop lines operated by human operators or industrial robots. This is a problem from the field of Operations Research for which the Discrete Event Simulation (DES) method has been used. Three models have been developed, including the manufacturing line before and after robotization, taking into account stochastic parameters of availability and reliability of the machines, operators, and robots. We apply the OEE (Overall Equipment Effectiveness) indicator to present how the availability, reliability, and quality parameters influence the performance of the workstations, especially in the short run and in the long run. In addition, the stability of the simulation model was analyzed. This approach enables a better representation of real manufacturing processes.
Highlights
This paper expands on the conference paper [1] published in the Position Papers of the FederatedConference on Computer Science and Information Systems (FedCSIS-2016).The industrial revolution caused the replacement of human labor by machinery
The aim of the current study is to develop a methodology that allows us to clearly define the production efficiency growth associated with an improvement of manufacturing systems, for example, the replacement of human operators with industrial robots
Simulation experiments were performed for the simulation time from the range of 8 to 6000 h in order to observe the influence of long-term failures
Summary
This paper expands on the conference paper [1] published in the Position Papers of the FederatedConference on Computer Science and Information Systems (FedCSIS-2016).The industrial revolution caused the replacement of human labor by machinery. This paper expands on the conference paper [1] published in the Position Papers of the Federated. Conference on Computer Science and Information Systems (FedCSIS-2016). The industrial revolution caused the replacement of human labor by machinery. We see increasing use of automation and robotization, which replaces human labor. Many industrial robots are used these days, especially for repetitive and high precision tasks (e.g., welding) or activities of monotonous and demanding physical exertion. Industrial robots have mobility similar to that of the human arm, and can perform various complex actions to a human. Thanks to robotization, many companies have obtained a reduction in production costs of 50%, an increase in productivity of 30%, and an increase in utilization of more than
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