Wyniki wyszukiwania - BazTech

1

Identifying part commonalities in a manufacturing company database

Kwapisz J., Infante V.

Information Systems in Management

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2016

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Vol. 5, No. 3

336--346

EN

Manufacturing companies that produce and assemble multiple products rely on databases containing thousands or even millions of parts. These databases are expensive to support, maintain and the inherent complexity does not allow end users to utilize fully such databases. Designers and engineers are often not able to find previously created parts, which they could potentially reuse, and they add one more part to the database. Engineered improvements without removal of the previous version of the component also cause the avoidable increase of elements in the database. Reuse of parts or planned development of common parts across products brings many benefits for manufacturers. Search algorithm utilized across part databases and varying projects allows identifying similar parts. The goal is to compare part names and attributes resulting in the assignment of a similarity score. Determining common and differentiating part attributes and characteristics between pairs of components allows nominating parts that can become shared in different products. The case study utilizes an industrial example to evaluate and assess the feasibility of the proposed method for identifying commonality opportunities. It turned out that it is possible to find many parts that can be potentially shared between different products.

2

Cost conditions of mass customization manufacturing

Mičieta B., Mleczko J.

Zarządzanie Przedsiębiorstwem

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2013

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Vol. 16, nr 4

15--22

EN

According to requirements of the market a great number of small companies are forced to offer a wide variety of products and to frequently respond to the market with customized solutions. High-variety production like mass customization is facing the challenge of effective variety management, which needs to deal with numerous variants of both product and process in order to accommodate diverse customer requirements. Large product portfolios allow customers to select products closely matching their needs, but it results in a larger costs. In the production of mass customization a very important issue is changeovers times. In spite of applying modern management techniques, setup time still plays an important part in the production cycle time. To shorten the production time, and therefore lower the cost, the methods of group technology (GT) are used. This paper presents a method of cost calculation taking into account manufacturing in organizational similar groups. The main purpose of this method is to identify the range of costs of elements produced in GT. The method was validated in conditions of high-variety production.

PL

Zgodnie z wymaganiami współczesnego rynku duża liczba małych przedsiębiorstw jest zmuszona do oferowania szerokiej gamy wyrobów i często oferuje rozwiązania dopasowane do potrzeb klienta. Wysoka różnorodność wyrobów (masowa kastomizacja) stoi przed wyzwaniem skutecznego zarządzania wytwarzaniem wielowariantowej oferty produktów dopasowanej do potrzeb klienta w oparciu o wariantowe procesy wytwarzania. Duże portfolio produktów pozwala ściśle dopasować wyrób do potrzeb odbiorcy, ale jednocześnie prowadzi do podwyższenia kosztów realizacji zamówień. W warunkach produkcji dopasowanej do potrzeb klienta bardzo ważnym zagadnieniem są czasy przezbrojeń. Pomimo stosowania nowoczesnego parku maszynowego, ze względu na ich ilość, czasy przezbrojeń nadal odgrywają ważną rolę. Poniższy artykuł przedstawia metody kalkulacji kosztów wytwarzania z uwzględnieniem dynamicznego grupowania w grupy organizacyjnie podobne. Głównym celem prezentowanej metody jest określenie zakresu kosztów produkowanych elementów w ramach GT. Metoda została zweryfikowana badaniami w warunkach produkcji wyrobów o wielu opcjach wykonania.

3

Distribution of information and documentation for the manufacturing processes of the high-variety products – case study

Mleczko J., Podhora P, Patka J

Applied Computer Science

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2013

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Vol. 9, no 2

20--33

EN

In the last years the researches in engineering have moved towards customer-oriented manufacturing. The individual customer's require-ments are very important for the company's activities. It results high-variety production. High-variety production like mass customization is facing the challenge of effective variety management. Applying methods of mass customization to the empirical process can improve product development process efficiency and reduce time and cost. The manufactu-ring process requires documentation of the production. Very often, the documentation process and the time of its formation is limited. The article includes an analysis of the modern manufacturing systems and answering the question: how is it possible to produce without having a docume-ntation in paper form. The presented solution is used during the high-variety products manufactured in the SMEs. The method was validated in the conditions of best practice high-variety production.

4

Cost of products manufactured in organizational similar groups – case study

Mleczko J.

Advances in Manufacturing Science and Technology

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2013

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Vol. 37, nr 1

31—41

EN

The paper presents selected aspects of production management related to the product customization. Product customization leads to an exponentially increased number of product and process variants, which exaggerates the difficulties in manufacturing in make-to-order production systems. The direct consequence of product customization on production is evidenced by an exponentially increased number of process variants, such as diverse machines, tools, fixtures, setups, cycle times and labors. In the production of mass customization a very important issue is changeovers times. In spite of applying modern management techniques, setup time still plays an important part in the production cycle time. The case study includes the manufacture of roller shutters. This paper presents a method of cost calculation taking into account the manufacturing roller shutters in organizational similar groups. The main purpose of this method is to identify range of costs of elements. The method was validated in the conditions of best practice production for high-variety production.

PL

W artykule przedstawiono wybrane zagadnienia zarządzania produkcją związane z dostosowaniem wyrobów do potrzeb klienta. Zjawisko kastomizacji produkcji prowadzi do wzrostu różnorodności wyrobów finalnych. Powoduje więc zwiększenie stopnia złożoności problemów zarządzania produkcją. Bezpośrednią konsekwencją kastomizacji produkcji jest zwiększenie liczby wariantów procesu wytwarzania, tendencja do poszerzenia parku maszynowego, asortymentu narzędzi, oprzyrządowania oraz zwiększenia liczby przezbrojeń. Jednocześnie zwiększa się długość cyklu produkcyjnego oraz nakładów pracy. W produkcji masowej jednym z podstawowych czynników efektywności wytwarzania jest czas przezbrojeń. Omówiono zagadnienie dla produkcji rolet zewnętrznych. Przedstawiono metodę zmniejszania czasu przezbrojeń, obniżania kosztów wytwarzania przez tworzenie grup organizacyjnie podobnych. Metodę poddano weryfikacji w warunkach produkcji wielowariantowej w rzeczywistych warunkach produkcyjnych.

5

Design method of products' processes for group technology

Mleczko J.

Journal of Machine Engineering

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2012

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Vol. 12, No. 3

7--19

EN

In contrast to the traditional manufacturing system, where the basic features are low product variety and mass production, recent manufacturing environment is characterized by shorter product life cycles, constantly diminishing batch sizes while the variety of product types and models continues to increase. In high-variety manufacturing , in spite of applying modern management techniques, setup time still plays an important part in the production cycle time. Product development teams use many methods and tools for design, test, and manufacture a new or improved product. Design for manufacturing methodologies are used to improve a product's manufacturability. For high-variety production the cumulative amount of setup time results from the number of changeovers. To shorten the production time and therefore cost the methods of group technology (GT) are used. This paper presents a method of increasing the manufacturability of elements produced in GT. The method was validated in the conditions of best practice production for high-variety production.

6

Product family manufacturing based on dynamic classification

Mleczko J.

Management and Production Engineering Review

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2011

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Vol. 2, No. 2

29-38

EN

According to requirements of the market a great number of small companies are forced to offer a wide variety of products and to frequently respond to the market with customized solutions. At the same time, the fast delivery of products is often key to winning orders. Recent developments in Information Technology have made product family manufacturing available for small companies. It is made possible by applying a class of software tools called product configurators which can be integrated with Enterprise Resource Planning (ERP) systems. This paper presents production management based on dynamic classification. High-variety production like mass customization is facing the challenge of effective variety management, which needs to deal with numerous variants of both product and process in order to accommodate diverse customer requirements. In high-variety production, in spite of applying modern management techniques, setup time still plays an important part in the production cycle time. The problem is not single change over time, but is in the quantity of changeovers required. This observation inspired the author to prepare a method of setup time reduction through the appropriate arrangement of tasks in the operational production plan. The appropriate arrangement of tasks means considering the similarity of parts from the point of view of operation carried out. The similarity of parts facilitates setup time reduction, which translates into smaller lot sizes, reduced in-process inventories, shorter lead time and higher throughput. The presented method is one of the elements of a computer aided management system for high-variety production. The method was validated in the conditions of best practice for unit and small batch production.

7

High-variety products manufacturing based on dynamic classification

Mleczko J.

Advances in Manufacturing Science and Technology

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2011

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Vol. 35, nr 3

71-86

EN

According to the requirements of the market, a great number of small companies are forced to offer a wide variety of products and to frequently respond to the market with customized solutions. This paper presents high-variety products manufacturing based on dynamic classification. High-variety production, like mass customization, is facing the challenge of effective variety management, which needs to deal with numerous variants of both product and process in order to accommodate diverse customer requirements. In high-variety production, in spite of applying modern techniques, setup time still plays an important part in the production cycle time. The problem is not single change over time, but is in the quantity of changeovers required. This observation inspired the author to prepare a method of setup time reduction through the appropriate arrangement of tasks in the operational production plan. The appropriate arrangement of tasks means considering the similarity of parts from the point of view of operations carried out. The similarity of parts facilitates setup time reduction, which translates into smaller lot sizes, reduced in-process inventories, shorter lead time and higher throughput. The method was validated in the conditions of best practice production for unit and small batch production.

PL

Wymagania współczesnego rynku przedsiębiorstwa determinują wytwarzanie wielowariantowych wyrobów dostosowanych do potrzeb użytkownika. W produkcji wielowariantowych produktów, pomimo zastosowania nowoczesnych metod zmniejszania czasu przezbrojenia, nadal odgrywa on znaczną rolę w cyklu produkcji. Problem dotyczy nie czasu pojedynczego przezbrojenia, ale liczby przezbrojeń. Stąd opracowano metodę skrócenia czasu przezbrojenia poprzez sekwencjonowanie zadań na poziomie operacyjnego planu produkcji. Zaproponowana metoda zakłada ustalenie podobieństwa zadań ze względu na wykonywaną operację przy użyciu wielostopniowej i dynamicznej klasyfikacji. Uwzględniono cechy konstrukcyjne, technologiczne oraz zmienne cechy organizacyjne wytwarzania. Metodę sprawdzono w praktyce produkcyjnej małych i średnich przedsiębiorstw.