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1

Elimination of constraints in the production process of power equipment components and the analysis of the resulting benefits

Knop Krzysztof

Production Engineering Archives

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2019

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Vol. 24

37--42

EN

The article presents the results regarding the elimination of constraints in the production process of a power equipment subassembly, a boiler chamber, together with an analysis of the benefits resulting from this, both financial and non-financial. The significance of bottlenecks in the production process, ways of its identification and limitations - in general - are presented. The article is a case-study of an attempt to eliminate the bottleneck in the production process of the boiler chamber, which turned out to be the process of drilling and marking-off, and work stations representing these processes. In order to eliminate the limitation, it was decided to replace the existing tracing and drilling work with a numerically controlled device - a boring machine moved from the liquidated department.. As a result, labor-intensive, manual chambers marking-off and the process of drilling holes with a smaller diameter drill have been eliminated. A number of benefits has been demonstrated resulting from the elimination of the bottleneck in the process, first of all, it was possible to reduce the duration of the marking-off and drilling operations and reduce the costs of the boiler chamber production process.

2

Optimization of production processes using the Yamazumi method

Sabadka D., Molnár V., Fedorko G., Jachowicz T.

Advances in Science and Technology. Research Journal

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2017

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Vol. 11, no 4

175--182

EN

Manufacturing companies are now placing great emphasis on competitiveness and looking for ways to utilise their resources more efficiently. This paper presents optimum efficiency improvement of the automotive transmission assembly production line by using line balancing. 3 assembly stations were selected to optimize where waste management requirements are not met for achieving the production capacity. Several measures were proposed on the assembly lines concerned to reduce operations by using eliminating unnecessary activities of the assembly processes, reducing the cycle time, and balancing manpower workload using line balancing through Yamazumi chart and Takt time. The results of the proposed measures were compared with the current situation in terms of increasing the efficiency of the production line.

3

Determination of bottlenecks in the production of wooden constructions

Krajčovičová M.

Drewno : prace naukowe, doniesienia, komunikaty

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2011

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vol. 54, nr 186

65-73

EN

Every production process has issues to deal with. One of these problems is the issue of bottlenecks. It is possible to reveal them through the use of optimising models that are inseparable parts of every production process these days. This article discusses the revelation of these problems during the production process. As an example we have used the production of wooden constructions. It is possible to use mathematical models, which were produced and applied in MATHEMATICS 5 program, for the revelation of bottlenecks as well as for subsequent production planning with a view to avoiding their formation.

PL

W każdym procesie produkcyjnym pojawiają się problemy, z którymi trzeba sobie poradzić. Jednym z tych problemów jest zagadnienie wąskich gardeł. Ich identyfikacja jest możliwa dzięki wykorzystaniu modeli optymalizacyjnych, będących obecnie nieodłącznymi elementami każdego procesu produkcyjnego. W niniejszym artykule omówiono identyfikację tych problemów już w trakcie procesu produkcyjnego. Za przykład posłużyła produkcja konstrukcji drewnianych. W celu identyfikacji wąskich gardeł, jak również planowania produkcji, w taki sposób aby ich uniknąć, możliwe jest wykorzystanie modeli matematycznych, które autorzy opracowali i zastosowali w środowisku programu MATHEMATICS 5.

4

Application of Simulation Technique in Weaving Mills

Gurkan P., Taşkin C.

Fibres & Textiles in Eastern Europe

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2005

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Vol. 13, no. 3 (51)

8--10

EN

Restricted possibilities for flexible working are among the basic problems in order-oriented textile weaving mills. In order to increase production and get orders ready on time, weaving mills generally focus on the speed and performance of the machines. However, the basic problem lies in a lack of organisation which definitively causes bottlenecks. In this study, a weaving mill which produces fabric based upon orders has been chosen as a subject, and this firm’s current system has been simulated. After working on the current system, the data were evaluated and the bottlenecks determined. Thus, alternative systems were created instead of the current system, and these alternative systems were compared with this current system. Further, thanks to the improved simulation program, the ordered product’s delivery date can be easily estimated. In this way, we aim to give ideas about optimising organisation and estimating the delivery dates of the orders for the weaving mills with this kind of job process.

PL

Ograniczona możliwość elastycznej pracy jest podstawowym problemem w zakładach tkackich, nastawionych na realizacją różnorodnych zamówień. W celu zwiększenia produkcji i wykonania zamówienia na czas, tkalnie zazwyczaj skupiają się na szybkości i osiągach maszyn. Jednakże zasadniczy problem leży w braku organizacji, co jest przyczyną powstawania zatorów w liniach produkcyjnych. W celu przeprowadzenia badań wybrano tkalnię, która bazuje na zamówieniach z zewnątrz i poddano symulacji jej aktualny system przepływu produkcji. Po zebraniu i ocenie danych, określono miejsce powstawania zatorów i ich wielkość. Zaproponowano alternatywne systemy produkcji, mogące zastąpić system dotychczas stosowany i dokonano ich porównania. Dodatkowo, dzięki udoskonaleniu programu symulacyjnego, łatwo można przewidzieć datę realizacji zamówienia. Tym sposobem udało się uzyskać wyobrażenie o optymalizacji organizacji produkcji i przewidzieć daty realizacji zamówień złożonych zakładom tkackich.