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Multi-objective optimization design of a fixture layout considering locator displacement and force–deformation

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Abstract

The fixture determines the workpiece position in a machining process; therefore, an increasing amount of attention has been given to fixture layout design. While machining, the workpiece position is affected by two major sources: (a) the locator displacement and (b) the force–deformation of the workpiece–fixture system. In the beginning of this paper, a geometric model considering the shape of a locator is developed to analyze the location performance, followed by the presentation of a simplified solving method and a location layout performance index. Second, to complete the force–deformation analysis, a finite element method-based force–deformation model is built and accelerated by a new method with a lower computer memory cost. Based on these two models, multiple objects of fixture layout optimization problems are proposed, and a multi-objective genetic algorithm-based optimization method is constructed. Finally, testing examples are approved to examine the validity of the method represented in this paper. These methods can provide a more accurate prediction of the locating performance in more widely used cases, and they have faster calculating speeds with lower computer memory costs.

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Authors and Affiliations

  1. School of Mechanical Engineering, Xi’an Jiaotong University, No.28, Xianning West Road, Xi’an, Shaanxi, 710049, People’s Republic of China

    Zhihui Liu, Michael Yu Wang, Kedian Wang & Xuesong Mei

  2. The Chinese University of Hong Kong, Shatin, NT, Hong Kong, China

    Michael Yu Wang

Authors
  1. Zhihui Liu
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  2. Michael Yu Wang
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  3. Kedian Wang
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  4. Xuesong Mei
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Corresponding author

Correspondence to Kedian Wang.

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Liu, Z., Wang, M.Y., Wang, K. et al. Multi-objective optimization design of a fixture layout considering locator displacement and force–deformation. Int J Adv Manuf Technol 67, 1267–1279 (2013). https://doi.org/10.1007/s00170-012-4564-7

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  • DOI: https://doi.org/10.1007/s00170-012-4564-7

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