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A study of FMS part type selection approaches for short-term production planning

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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.

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Authors and Affiliations

  1. Graduate School of Business Administration, The University of Michigan, Ann Arbor, Michigan

    Kathryn E. Stecke & Ilyong Kim

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  1. Kathryn E. Stecke
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  2. Ilyong Kim
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Stecke, K.E., Kim, I. A study of FMS part type selection approaches for short-term production planning. Int J Flex Manuf Syst 1, 7–29 (1988). https://doi.org/10.1007/BF00713157

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