Wyniki wyszukiwania - BazTech

1

Analysis of the implementation of the selected lean production method in the production company

Czerwińska Karolina, Pacana Andrzej

Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Śląska

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2019

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z. 133

43--54

EN

The article reviews the literature on the concept of Total Productive Maintenance (TPM) in manufacturing activities as one of the elements of lean production. On the example of an automotive manufacturing company, the TPM implementation process and the analysis of the effectiveness of the implementation of the method using the OEE indicator were presented. The analysis not only confirmed the effectiveness of the TPM concept in reducing the level and duration of machine failures, but also provided recommendations for further development of the concept in the company, and a basis for formulating objectives for the future.

2

Performance evaluation of continuous miner based underground mine operation system: An OEE based approach

Banerjee Sumit

New Trends in Production Engineering

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2019

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Vol. 2, Iss. 1

596--603

EN

CM is a globally renowned machine, designed to work as a mass production technology for underground coal. Different major coal producers across the globe are using this technology for decades to produce underground coal efficiently. India is also one of the major players globally in the arena of coal production and adopted this cutting edge technology since last decade by implementing at. few of the selective underground coal mining projects. Performance of CM technology is influenced by the geo-mining condition, fleets of other ancillary units and reliability of subsystems while implementation of this system depends largely on the extent of reserve. These aspects generate a scope of large scale research and development in this field. Overall Equipment Effectiveness (OEE) is the parameter to benchmark the equipment performance globally. OEE is the product of equipment availability, performance and product quality. This mining machine based paper focuses on the Overall Equipment Effectiveness (OEE) of the complete CM based operation to identify the vulnerable systems, which helps to design proper preventive maintenance programme. The CM based system is divided into few subsystems, such as; electrical, cutter, gathering arrangement, traction, hydraulic, chassis, feeder breaker, shuttle car, CM conveyor and out-bye conveyor. The downtime data used for this analysis is collected from an underground coal mine situated in the central part of India, belongs to one leading coal producing company of the country. From analysis it was found that, electrical systems and conveyors are among most vulnerable systems and deserves more care during maintenance. On the basis of these results recommendations are made to redesign the Preventive Maintenance Programme, in order to avoid the lower availability as well as lower OEE.

3

Modelling and Simulation Method for Production Process Automation in Steel Casting Foundry

Kampa A., Gołda G.

Archives of Foundry Engineering

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2018

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Vol. 18, iss. 1

47--52

EN

The problem of production flow in steel casting foundry is analysed in this paper. Because of increased demand and market competition, a reorganisation of the foundry process is required, including the elimination of manual labour and the implementation of automation and robotisation of certain processes. The problem is how to determine the real difference in work efficiency between human workers and robots. We show an analysis of the production efficiency of steel casting foundry operated by either human operators or industrial robots. This is a problem from the field of Operations Research for which the Discrete Event Simulation (DES) method is used. Three models are developed, including the foundry before and after automation when taking into consideration parameters of the availability of machines, operators and robots. We apply the OEE (Overall Equipment Effectiveness) indicator to present how the availability, performance and quality parameters influence the foundry’s productivity. In addition, stability of the simulation model was analysed. This approach allows for a better representation of real production processes and the obtained results can be used for further economic analysis.