Wyniki wyszukiwania - BazTech

1

Reconfigurable manufacturing system – a new class of manufacturing system

Prasad Durga, Jayswal S. C.

Management and Production Engineering Review

|

2019

|

Vol. 10, No. 4

37--47

EN

Today’s manufacturing environment is highly uncertain, and it is continuously changing. It is characterized by shorter life cycles of products and technologies, shorter delivery times, an increased level of customization at the price of a standard product, increased product variety, quality as well as demand variability and intense global competition. Academicians, as well as practitioners, agree that uncertainty will continue to grow in the twenty-ﬁrst century. To deal with the uncertainties in demand variation and production capacity a manufacturing system is required which can be easily reconﬁgured when there is a need at low cost. A reconﬁgurable manufacturing system is such a type of system. In the present work, the concept of the reconﬁgurable manufacturing system has been discussed and reviewed. It has been compared with dedicated systems and ﬂexible manufacturing systems. Part family formation and barriers of reconﬁguration also have been discussed. This work is an attempt to contribute to the conceptual systematization of the reconﬁgurable manufacturing system and reconﬁgurability by synthesizing the vast literature available after a systematic review.

2

Enhancing the reconfigurability of special purpose machine tools using mechanical module interfaces

Farhan U. H., Tolouei-Rad M., Osseiran A

Journal of Achievements in Materials and Manufacturing Engineering

|

2017

|

Vol. 85, nr 2

56--66

EN

Purpose: The purpose of this paper is to introduce a solution that can enhance the reconfigurability of special purpose machines (SPMs). This is because SPMs can be used in different configurations and the reconfiguring time for these machines can be crucial. Therefore, it is important to reduce this time in order to enhance the performance of SPMs. Design/methodology/approach: A mechanical adapter is proposed as a solution to achieve the purpose of this paper. The design of the adapter is based on Multi Coupling (MC) type, and its functionality is based on “Plug and Produce”. This adapter is used to modify an SPM element called workpiece transfer in order to accommodate two types of chucks without the need to change the workpiece transfer. The performance criteria are analysed and investigated for this adapter. Findings: The proposed solution will enhance the reconfigurability of SPMs. This is because it will reduce the number of elements that are needed for reconfiguration. As a result, the time and cost for the reconfiguration will be reduced considerably. Research limitations/implications: Because SPMs have several types of elements, adapting the proposed solutions to be used for all elements can be a complex process. Therefore, more investigation and analysis need to be carried out in order to build a complete adapter system for SPMs. Practical implications: SPMs are already used widely in manufacturing. However, they are considered relatively expensive compared to the traditional machines tools because they are applied for special applications. The proposed solution will help to overcome this problem and make SPMs applicable for wider applications. Originality/value: The proposed solution is the first attempt in terms of enhancing the performance of SPMs. This can bring considerable benefits to the end users in manufacturing, who are using SPMs, in order to reduce the reconfiguration time and cost for these machine tools.

3

Design of reconfigurable machine systems: knowledge based approach

Mpofu K., Kumile C.M., Tlale N.S.

Journal of KONBiN

|

2008

|

No. 5 (8)

135-144

EN

The Reconfigurable Manufacturing System (RMS) offers a flexible, changeable and dynamic manufacturing platform which is complex. The RMS evolved from the necessity to satisfy the markets highly customised demands. As the requirements of the customers vary the manufacturing system will need continuous and timely reconfigurations. A Knowledge Based System (KBS) is therefore the critical link in the module selection from a database to configure a machine. Modules will be selected to be timeously assembled into machine tools to manufacture customised goods with minimal disruptions to satisfy customer delivery times. This paper will review the issues surrounding KBS software and their characteristics, as the appropriateness and requisite for establishing an RMS knowledge based system application is explored. Basic machine tree structures for the KBS application are also presented and discussed.

PL

Rekonfigurowalny System Wytwarzania (RMS) stanowi elastyczną, zmienną i dynamiczną platformę produkcyjną, będącą złożonym układem. Systemy RMS z potrzeby zaspokojenia wymagań rynków, dostosowanych do indywidualnych żądań klientów. Ponieważ potrzeby klientów się zmieniają, systemy wytwarzania będą wymagały nieustannej rekonfiguracji wykonywanej z zachowaniem określonych ograniczeń czasowych. System Baz Wiedzy (KBS) jest więc elementem krytycznym w sekcji modułów, łączącym bazę danych z procesem konfiguracji maszyny. Wybór modułów będzie dokonywany z uwzględnieniem czasu potrzebnego do zamontowania ich w narzędziach do obróbki skrawaniem i innych maszynach. W niniejszym artykule dokonano przeglądu zagadnień związanych ze środowiskiem programowym Systemów Baz Wiedzy (KBS) wraz z ich charakterystykami, a także ich przydatności i wymagań pozwalających na opracowanie Rekonfigurowalnego Systemu Wytwarzania (RMS) opartego na bazie wiedzy. Przedstawiono i omówiono także podstawowe struktury drzewa decyzyjnego dla wyboru maszyn i wyposażenia dla aplikacji systemów opartych na bazach wiedzy (KBS).

4

Obrabiarki rekonfigurowalne.

Oczoś K. E.

Mechanik

|

2007

|

R. 80, nr 1

7-8

PL

Czynniki wpływające na rekonfigurowalność obrabiarek. Przemysłowa rola i znaczenie obrabiarek rekonfigurowalnych. Modułowość i rekonfigurowalność obrabiarek. Przykłady rekonfigurowalnych konstrukcji obrabiarek. Ekonomiczność obrabiarek rekonfigurowalnych. Prognozy rozwojowe.

EN

Factors influencing reconfigurability of machine tools. Industrial role of reconfigurable machine tools. Modularity and reconfigurability of machine tools. Examples of reconfigurable structure of machine tools. Economical efficiency of reconfigurable machine tools. Development forecast.

5

Geometrical and Kinematical Design of Reconfigurable Machine

Aladad H., D'qcunto A., Martin P.

Journal of Machine Engineering

|

2007

|

Vol. 7, No. 1

24--34

EN

Reconfigurable Machine Tool (RMT) is the critical issue to realize both the flexibility and productivity of manufacturing systems and to satisfy the mass-customization production. The purpose of this paper is to present reconfigurable machine tool design process. Specifically, geometrical and kinematical architectures design of RMT starting from a set of process data assigned to a given part family. The geometrical architecture specifies required tool approach directions of spindle of RMT to achieve a task under the concept of accessibility and fusion. Whereas, the kinematical architecture enables to determine all required motions (motion, range of axes) in order to realize the task. We used the dual vector with a view to generate the kinematical architecture.