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1
Content available remote Befared SA: w poszukiwaniu. Industry 4.0 w polskich MŚP
Mleczko J., Cieśla B.
Napędy i Sterowanie
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2018
|
R. 20, nr 12
8--10
PL
Firmy z sektora Małych i Średnich Przedsiębiorstw od lat stanowią trzon polskiej gospodarki. Zakres i branża ich działalności są bardzo zróżnicowane, jednak niezależnie od tego spora grupa producentów odnalazła swoją niszę rynkową w tworzeniu rozwiązań dokładnie dopasowanych do potrzeb klienta.
2
Content available Kształtowanie struktury kwalifikacyjnej zatrudnienia w warunkach produkcji kastomizowanej
Mleczko J., Baron-Puda M.
Zarządzanie Przedsiębiorstwem
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2017
|
Vol. 20, nr 3
32--38
EN
The considered issue refers to manufacturing in conditions of variable human resource needs. The aim of the paper was to develop the method for determining the structure of employment from the viewpoint of desired employee skills and qualifications, including multiskilling. The method was verified on the example of production data of the company manufacturing glass shielding systems in conditions of customized production.
3
Content available Production planning in conditions of mass customization based on theory of constraints
Mleczko J., Bobiński P.
Applied Computer Science
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2017
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Vol. 13, no 4
35--44
EN
In accordance with the requirements of the modern market, small and medium-sized enterprises (SMEs) need to offer a wide range of products tailored to the specific and individual requirements. The success of many enterprises, which work in mass production system and use economic effect of scale pro-duction slowly is a thing of the past. There are many enterprises, generally small and medium manufacturing in unit and small batch production, for which it is necessary to develop optimal methods of production planning, taking into account the flexible production requirements, matched to the time-varying customer’s demand. The article presents the production planning based on TOC in conditions of mass customization. Presented solutions are used in modern practice.
4
Content available Manufacturing documentation for the high-variety products
Mleczko J., Dulina L
Management and Production Engineering Review
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2014
|
Vol. 5, No. 3
53--61
EN
In the last years researches in engineering have moved towards customer-oriented manufacturing. The individual customer’s requirements are very important for the company’s activities. It results in 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 the efficiency of product development process and reduce time and cost. The manufacturing process requires documentation of the production. Very often, the documentation process and the time of its formation is limited. One possible way to solve this problem is to automatically create documentation in electronic form. Then, without having to print, distribute them directly to the panel of the machine. In the process of creating manufacturing documentation, this method takes into account alternative manufacturing processes and the current availability of labor resources The article is an attempt at the analysis of the modern manufacturing systems and answering the question, how it is possible to produce without having documentation in paper form. The presented solution is used for the high-variety products manufactured in the SMEs. The method was validated in the conditions of best practice high-variety production.
5
Content available Conditions of manufacturing in contemporary small and medium enterprices
Mleczko J., Rosina L, Baumgartner M
Applied Computer Science
|
2014
|
Vol. 10, no 1
55--66
EN
In accordance with the requirements of the modern market, small and medium-sized enterprises (SMEs) need to offer a wide range of products tailored to the specific and individual requirements. The article presents the conditions of production using modern computer techniques. Presented solutions are used in modern practice.
6
Content available Wykorzystywanie elektronicznej formy dokumentacji wytwarzania w jednostkowej i małoseryjnej produkcji wyrobów
Mleczko J.
Zarządzanie Przedsiębiorstwem
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2013
|
Vol. 16, nr 2
23--34
EN
According to requirements of the contemporary market the SME.s must offer the wide range of products adapted for individual requirements of the customer. This leads to manufacture in very short cycles and to the necessity of the individual production of unit and small batch condition. The manufacturing 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 answers the question: how is possible to produce without having a documentation in paper form. The presented solution is used during the products manufacturing in the SMEs.
7
Content available Cost conditions of mass customization manufacturing
Mičieta B., Mleczko J.
Zarządzanie Przedsiębiorstwem
|
2013
|
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.
8
Content available Identification of bottlenecks in the unit Make to Order production
Mleczko J., Mičieta B., Dulina L
Applied Computer Science
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2013
|
Vol. 9, no 2
43--56
EN
Since the production is aimed at fulfilling specific needs of demanding customers and not at filling warehouses, the production volume should reflect the volume of orders. In times of fight for the client every order has to be performed on time. What is more, in times of fight for shortening the delivery cycle, meeting safe deadlines, that is distant in time, is not enough. Companies are forced to meet short deadlines with keeping the product price competitiveness condition. It is hardly possible without a advanced planning support system. Currently, advanced planning systems are coming into use, however their cost exceeds the possibilities of small and medium enterprises and algorithms used often require great customization to industries’ needs and conditions of unit and small-batch production. Such conditions lead to a need for simplified methods. The methods used so far are not capable of finding the global optimum of such big data ranges. For this reason computer tools for applying to the industrial scale are needed. The above method basis on the data so far collected in ERP system.
9
Content available 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
|
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.
10
Content available Cost of products manufactured in organizational similar groups – case study
Mleczko J.
Advances in Manufacturing Science and Technology
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2013
|
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.
11
Content available Design method of products' processes for group technology
Mleczko J.
Journal of Machine Engineering
|
2012
|
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.
12
Content available remote Przepływ danych w zarządzaniu operacyjnym wyrobów wariantowych
Mleczko J.
Zarządzanie Przedsiębiorstwem
|
2011
|
Vol. 14, nr 1
17-26
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 configurations which can be integrated with Enterprise Resource Planning (ERP) systems. For configurable products, due to the number of options for implementation, the process of data preparation requires special care so that not to be too time-consuming and likely to be realized in production practice. This article presents problem of product identification, customizable product modeling, user interface issues, the algorithmic generating of bill of materials and routing processes based on the options specified by the B2B system users and data flow in the operational management. The decision framework of product family design and development along the entire spectrum of product realization according to the concept of design domains. Product family decision-making involves a series of "what how" mappings between these domains. Managing product families consisting of a large set of product variants as configurable products requires defining a configuration model. The concepts and modeling guidelines for them were validated with success in SME for roller shutters. Information system support is necessary for modeling products, particularly for a configuration available on the Internet for B2B partners. In addition to having a good understanding of the product, a designer should be familiar with object oriented modeling. The main benefit there would be improving communication within the product development team and to other departments in the company, e.g. sales. The benefits also include the use of additional functions provided by the knowledge database, structure and the related design constraints during the product development. The method was validated in the conditions of best practice production for unit and small batch production.
13
Content available Sterowanie bezodpadową produkcją wyrobów konfigurowalnych - studium przypadku integracji ERP i MES
Mleczko J.
Pomiary Automatyka Robotyka
|
2011
|
R. 15, nr 2
166-175
PL
Zgodnie z wymaganiami współczesnego rynku małe i średnie przedsiębiorstwa muszą oferować szeroką gamę wyrobów dostosowanych do specyficznych i indywidualnych wymagań klienta. Prowadzi to do konieczności jednostkowej produkcji wyrobów konfigurowalnych w bardzo krótkich cyklach wytwarzania. Proponowanym rozwiązaniem jest integracja systemów klasy MES i ERP. Powyższy artykuł przedstawia studium przypadku implementacji zintegrowanego rozwiązania sterowania produkcją bezodpadową rolet zewnętrznych. Obejmuje zagadnienia przygotowania danych dla sytemu informatycznego, operacyjne planowanie produkcji, sterowanie bezpośrednie linią produkcyjną oraz nadzorowanie przebiegu procesu produkcyjnego. Przedstawione zagadnienia są rozwiazaniem w prototypowej produkcji w realnym przedsiębiorstwie produkcyjnym średniej wielkości.
EN
According to requirements of the contemporary market the SME's must offer the wide range of products adapted for individual requirements of the customer. This leads to manufacture in very short cycles and to the necessity of the individual production of configurable products. The proposed solution is the integration of MES and ERP systems. This article presents the case study of implementation an integrated solution to non-waste manufacturing of roller shutters. It covers preparation of data for information system, confirming orders in the B2B system, operational planning, direct control and monitoring of manufacturing process. The presented solution is used in the prototype production in the SME.
14
Content available remote Product family manufacturing based on dynamic classification
Mleczko J.
Management and Production Engineering Review
|
2011
|
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.
15
Content available remote Application of vibroacoustics signal processing methods for ic engine diagnostics
Nowak A., Kowalski Z., Mleczko J.
Architecture Civil Engineering Environment
|
2011
|
Vol. 4, no. 1
99-106
EN
A comparative analysis of the influence on the natural environment of two different methods of dealing with municipal waste has been carried out in this work. The research has been based on the data coming from three waste dumpsites: two of them are still operating in Poland and the third one located in Breitenau, Austria is already closed, as well as from the municipal waste incineration plant in Vienna, Austria. The analysis was carried out with the application of the BAT method, which is preferred by the European Union, and with the consideration of the technical, economic and ecological criteria. The obtained results indicate that, as far as the analyzed area is concerned, thermal utilization is a more beneficial method than waste dumping in landfill sites.
PL
W pracy dokonano analizy porównawczej wpływu na środowisko naturalne dwóch różnych sposobów postępowania z odpadami komunalnymi. Badania oparto na danych dotyczących trzech składowisk odpadów: dwóch działających w Polsce i jednego już zamkniętego w Breitenau, Austria oraz spalarni odpadów komunalnych w Wiedniu, Austria. Analizę wykonano z zastosowaniem techniki BAT, preferowaną przez Unię Europejską, biorąc pod uwagę kryteria techniczne, ekonomiczne i ekologiczne. Uzyskane wyniki wskazują, że termiczna utylizacja jest metodą bardziej korzystną w analizowanym zakresie niż składowanie odpadów.
16
Content available remote High-variety products manufacturing based on dynamic classification
Mleczko J.
Advances in Manufacturing Science and Technology
|
2011
|
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.
17
Content available remote Dynamic classification of tasks in condition of unit and small batch production
Mleczko J.
Management and Production Engineering Review
|
2010
|
Vol. 1, No. 3
41-55
EN
In the process of unit and small batch production a very important aspect is the amount of time from production setup to availability to the customer. In spite of applying modern management techniques, setup time still plays an important part in the production cycle time. In the examined companies the relationship between changeover time to processing time was significant. The above research 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 meant considering the similarity of parts from the point of view of carried out operation. The similarity of parts facilitates setup time reduction, which translate into smaller lot sizes, reduced in-process inventories, shorter lead time and higher throughput. The method was validated in conditions of the production practice for unit and small batch production. The presented method is one of the elements of a computer aided management system for small and medium enterprises (SME).
18
Content available Computer aided confirming orders of configurable products - case study of data preparation
Mleczko J.
Applied Computer Science
|
2010
|
Vol. 6, no 1
42--53
EN
According to requirements of the market a great number of small companies are forced to offer a wide product variety and often to respond to the market with customized solutions. At the same time, fast delivery is often a key to win orders. Recent developments in Information Technology (IT) made available also for small companies a class of software tools called product configurators. This paper presents a method of confirming orders for configurable products, focusing on data preparation for IT systems. The method enables efficient management of a large number of product variants. The empirical evidence suggests that, in order to exploit the full potential advantages of product configuration, changes in the organization and support IT systems are needed. This paper reports a case study of the implementation of a product configuration software in small and medium (SME) manufacturing enterprises. The example of the manufacturing roller shutter was chosen.
19
Content available Specify of bottlenecks in conditions of unit and small-batch production
Matuszek J., Mleczko J.
Journal of Automation Mobile Robotics and Intelligent Systems
|
2009
|
Vol. 3, No. 3
102-109
EN
The manufacturing industry has evolved over the past several decades in response to changing customer needs. Customers have become more demanding and want products that can meet their specific individual requirements. The standard products previously produced in large batches are not sufficient to meet this variety demanded. Given the increased competition, both locally and globally, companies must also now respond faster to get and keep customers. Enterprises were forced to unit and small-batch production. Currently, advanced planning systems are coming into use, however their cost exceeds the possibilities of small and medium enterprises and algorithms used often require great customization to industries' needs and conditions of unit and small-batch production. The paper has been drawn on the basis of research on overloads of moving bottlenecks in conditions of unit and small batch production in real conditions having a big number of resources and tasks. The methods used so far are not capable of finding the global optimum of such big data ranges. The author took on building a heuristic algorithm, which could find solution good enough and based on TOC (Theory of Constraints) assumptions and verification of assumptions using tests in real production systems. The above method found application to the industrial scale, as extension of the ERP class system.
20
Content available remote Grupowanie zadań w operacyjnym planie produkcji wycinarki laserowej
Mleczko J.
Inżynieria Maszyn
|
2009
|
R. 14, z. 3
139-157
PL
Uwarunkowania współczesnych przedsiębiorstw wymagają dostosowywania produkcji wyrobów do ciągle zmieniających się wymagań klienta. Powoduje to konieczność produkcji jednostkowej i małoseryjnej wyrobów wariantowych w wielu opcjach wykonania. Produkcja wyrobów w polskich warunkach odbywa się na uniwersalnych obrabiarkach przeważnie w małych i średnich przedsiębiorstwach. Zastosowanie zaawansowanych technik (jak np. SMED) pozwala na znaczną redukcję czasów przezbrojeń, w tego rodzaju produkcji, ze względu jednak na ilość przezbrojeń udział czasów przygotowawczo-zakończeniowych w całości czasów wytwarzania jest nadal znaczny. W większości przedsiębiorstw stosowane są systemy do wspomagania zarządzania często klasy MRPII/ERP. Mimo posiadania znacznej ilości danych wejściowych gromadzonych w tego rodzaju systemach informatycznych, obszar operacyjnego zarządzania produkcją ciągle wspomagany jest w stopniu niewystarczającym. Dla tego rodzaju warunków produkcji autor zaproponował zbudowanie systemu doradczego opartego o zastosowanie dynamicznej klasyfikacji i grupowania zadań na poziomie operacyjnego planu produkcji. Powyższa metoda wykorzystuje dane planistyczne pozyskane z systemu klasy ERP, dokonuje dynamicznego grupowania zadań uwzględniając cechy elementów i wyrobów mające zasadniczy wpływ na czasy przezbrojeń na wąskim gardle. Powyższe cechy jak i metoda ich wykorzystania stanowi integralną część bazy wiedzy systemu doradczego. Poniżej podano przykład zastosowania metody do optymalizacji pracy wycinarki laserowej. Podany przykład zaczerpnięto z badań praktyki produkcyjnej przedsiębiorstwa produkującego wyroby sprzętu szpitalnego, w którym "wąskie gardła" ulokowane były między innymi na wycinarkach laserowych.
EN
Determinant of contemporary enterprises requires adapting the production of products for still changing requirements of the customer The production planning in most companies in small and medium enterprises (SME) consists of two-stage hierarchy, medium term planning and detailed scheduling. A necessity of the individual and small-batch production causes it of variant products in many options of the workmanship. The production of products in Polish enterprisers takes place on universal machines mainly in the SME's. Medium term planning is mostly carried out by MRPII or ERP software. The detailed scheduling level activities in the plans are performed by advanced planning software. This software in individual and small-batch conditions of production focuses on moving bottlenecks. Using techniques of classification and grouping into organizationally similar groups setup times were reduced. For the reduction of bottlenecks data of the ERP system were used. Assumptions were validated wilh researches in real enterprises. The examples of using the above method to the optimization of the laser cutter's tasks were given.
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