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  • 1
    Electronic Resource
    Electronic Resource
    A descriptive multi-attribute model for reconfigurable machining system selection examining buyer-supplier relationships (2000)
    Bingley : Emerald
    International journal of agile management systems 2 (2000), S. 33-48 
    Details
    ISSN: 1465-4652
    Source: Emerald Fulltext Archive Database 1994-2005
    Topics: Technology
    Notes: Presents a model of the machining system selection process that is focused on capital intensive, complex machining systems that are intended to provide service over a long time horizon. This model was developed based on interviews with both machine tool suppliers and buyers. The systems considered here increasingly face potentially conflicting demands such as: the ability to be quickly and inexpensively upgraded and reconfigured in order to have quick new product change-over and ramp-up time; and high product variety at close to mass production costs. This new "reconfigurability" capability increases the importance of the supplier-buyer relationship after the machining system has been selected. We also remark that the selection process can serve as the basis for internal consensus and team building within the buyer firm and for enhancing supplier base quality.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1108/14654650010312598
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    A study of FMS part type selection approaches for short-term production planning (1988)
    Springer
    International journal of flexible manufacturing systems 1 (1988), S. 7-29 
    Details
    ISSN: 1572-9370
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract This research compares seven approaches from the literature to the selection of part types for simultaneous production over the next time horizon. A flexible approach to the selection of part types and the simultaneous determination of their mix ratios so as to balance aggregate machine workloads is presented. Constraints on tool magazine capacity are considered. Simulation studies are conducted on realistic, detailed models of flexible flow systems (FFSs) configured as pooled machines of equal sizes. The simulated settings are constructed to evaluate the impact of such factors as blocking, transportation, buffer utilizations, and fixture requirements and limitations of various types. One of the goals of this study is to encourage industry to relax, for those FMS types for which the procedure is appropriate, what is essentially an artificial constraint: that tool changing be isolated in time, to a period between batches. For other types of FMSs, batching may be appropriate. The results indicate that using the flexible approach enables the system to be more highly utilized. It is also observed that the batching approaches tend to require more fixtures of each type than the flexible approach. The system utilizations for the batching approaches seem to be more sensitive to restrictions on the number of fixtures of each type. Further research needs are also discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00713157
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Algorithms for efficient planning and operation of a particular FMS (1989)
    Springer
    International journal of flexible manufacturing systems 1 (1989), S. 287-324 
    Details
    ISSN: 1572-9370
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract This article is a detailed case study of a particular FMS that will be operational in 1989. It describes the daily planning and operating problems that will need to be addressed. The algorithms that will operate this system are presented. Given the daily changing production requirements, the algorithms begin with an aggregate planning feasibility check. Then planning, scheduling, inventory management, and breakdowns are addressed. The key problems in operating this system are tool management problems. Detailed tooling data and their analysis are presented in an appendix to address these problems.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00183873
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Machine utilizations achieved using balanced FMS production ratios in a simulated setting (1988)
    Springer
    Annals of operations research 15 (1988), S. 227-267 
    Details
    ISSN: 1572-9338
    Keywords: FMS ; production ratios ; mathematical programming ; levels of detail in modeling ; balanced machine workloads ; machine utilizations ; dispatching rules ; simulation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Economics
    Notes: Abstract Stecke [21] has developed mathematical programming approaches for determining, from a set of part type requirements, the production ratios (part types to be produced next, and their proportions) which maximize overall machine utilizations by balancing machine workloads in a flexible manufacturing system (FMS). These mathematical programming (MP) approaches are aggregate in the sense that they do not take into account such things as contention for transportation resources, travel time for work-in-process, contention for machines, finite buffer space, and dispatching rules. In the current study, the sensitivity of machine utilizations to these aggregations is investigated through simulation modeling. For the situation examined, it is found that achieved machine utilizations are a strong function of some of the factors ignored in the MP methodology, ranging from 9.1% to 22.9% less than those theoretically attainable under the mathematical programming assumptions. The 9.1% degradation results from modeling with nonzero work-in-process travel times (i.e. 2 minutes per transfer) and using only central work-in-process buffers. Resource levels (e.g. the number of automated guided vehicles; the amount of work-in-process; the number of slack buffers) needed to limit the degradation to 9.1% correspond to FMS operating conditions which are feasible in practice.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02186798
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  • 5
    Electronic Resource
    Electronic Resource
    Dynamic analysis of repetitive decision-free discreteevent processes: The algebra of timed marked graphs and algorithmic issues (1990)
    Springer
    Annals of operations research 26 (1990), S. 150-193 
    Details
    ISSN: 1572-9338
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Economics
    Notes: Abstract A model to analyze certain classes of discrete event dynamic systems is presented. Previous research on timed marked graphs is reviewed and extended. This model is useful to analyze asynchronous and repetitive production processes. In particular, applications to certain classes of flexible manufacturing systems are provided in a companion paper. Here, an algebraic representation of timed marked graphs in terms of reccurrence equations is provided. These equations are linear in a nonconventional algebra, that is described. Also, an algorithm to properly characterize the periodic behavior of repetitive production processes is descrbed. This model extends the concepts from PERT/CPM analysis to repetitive production processes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02248590
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    Heuristics for minimizing tool switches when scheduling part types on a flexible machine (1998)
    Springer
    IIE transactions 30 (1998), S. 689-694 
    Details
    ISSN: 1573-9724
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract This article considers a tool loading problem whose objective is to minimize the number of tool switches over time in order to process several parts on a flexible machine. New heuristics are presented and compared. Some of these are shown to be superior to existing methods.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1026434104330
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    Paper (German National Licenses)
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  • 7
    Electronic Resource
    Electronic Resource
    Production planning for flexible flow systems with limited machine flexibility (1998)
    Springer
    IIE transactions 30 (1998), S. 669-684 
    Details
    ISSN: 1573-9724
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract A flexible manufacturing system (FMS) is highly capital-intensive and FMS users are concerned with achieving high system utilization. The production planning function for setting up an FMS prior to production should be developed in order to make the most of the potential benefits of FMSs. We consider two production planning problems of grouping and loading a flexible flow system, which is an important subset of FMSs where the routing of parts is unidirectional. We show that considering this routing restriction as well as limited machine flexibility strongly affects both the solution techniques and the quality of the solutions. Because of the complexity of the problem, we present a heuristic approach that decomposes the original problem into three interrelated subproblems. We show that the proposed approach usually finds a near-optimum solution and is superior to an approach that exists in the literature of FMS production planning. We also introduce effective heuristic methods for two new subproblems that arise because of the unidirectional flow precedence and flexibility constraints. Computational results are reported and future research issues are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1007546428920
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    Paper (German National Licenses)
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  • 8
    Book
    Book
    Flexible manufacturing systems: operations research models and applications II; Vol. 15 (1988)
    Basel :Baltzer,
    Details
    Title: Flexible manufacturing systems: operations research models and applications II; Vol. 15
    Contributer: Stecke, Kathryn E.
    Publisher: Basel :Baltzer,
    Year of publication: 1988
    Series Statement: Annals of operations research Vol. 15
    Type of Medium: Book
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  • 9
    Book
    Book
    3rd ORSA/TIMS conference on flexible manufacturing systems: operations research models and applications. Proceedings; Vol. 8 (1989)
    Amsterdam u.a. :Elsevier,
    Details
    Title: 3rd ORSA/TIMS conference on flexible manufacturing systems: operations research models and applications. Proceedings; Vol. 8
    Contributer: Stecke, Kathryn E. , Suri, Rajan
    Publisher: Amsterdam u.a. :Elsevier,
    Year of publication: 1989
    Pages: 388 S.
    Series Statement: Manufacturing research and technology Vol. 8
    Type of Medium: Book
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