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      • Department of Industrial Engineering
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      Integrated lot sizing and tool management in automated manufacturing systems

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      Author
      Aktürk, Mehmet Selim
      Önen, Siraceddin
      Date
      1997
      Source Title
      Proceedings of the 6th Industrial Engineering Research Conference, IERC 1997
      Publisher
      IIE
      Pages
      340 - 345
      Language
      English
      Type
      Conference Paper
      Item Usage Stats
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      Abstract
      We propose a new algorithm to solve lot sizing, tool allocation and machining conditions optimization problems simultaneously to minimize total production cost in a CNC environment. Most of the existing lot sizing and tool management methods solve these problems independently using a two-level optimization approach. Thus, we not only improve the overall solution by exploiting the interactions, but also prevent any infeasibility that might occur for the tool management problem due to decisions made at the lot sizing level. We showed that in a set of randomly generated problems 22.5% of solutions found by the two-level approach were infeasible and we improved the solution on the average by 6.79% for the remaining cases with an average computation time of 63.4 seconds.
      Keywords
      Algorithms
      Computer control
      Machine tools
      Machining
      Numerical control systems
      Optimization
      Problem solving
      Lot sizing
      Tool management
      Flexible manufacturing systems
      Permalink
      http://hdl.handle.net/11693/27691
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      • Department of Industrial Engineering 677
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