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This study aims to define the assembly shift for “nx” fit patterns, considering scrap and the influence of increasing elements. The methodology includes rejection rate estimation via Monte Carlo simulation, gap distribution estimation, and assembly shift computation based on gap distribution. It also proposes a design methodology for dimensioning tolerances to meet assembly shift requirements. Results show narrower assembly shift distributions with more pattern elements, revealing an exponential relationship. A case study based on a real application demonstrates how the proposed methodology can be applied to actual industrial cases.

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Statistical Assembly Shift a Numerical Approach Applied to Pattern of Fits

  • 会议论文

  • 发表日期：

    2025年

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  • Mattia Maltauro,
  • Roberto Meneghello,
  • Gianmaria Concheri

摘要

This study aims to define the assembly shift for “nx” fit patterns, considering scrap and the influence of increasing elements. The methodology includes rejection rate estimation via Monte Carlo simulation, gap distribution estimation, and assembly shift computation based on gap distribution. It also proposes a design methodology for dimensioning tolerances to meet assembly shift requirements. Results show narrower assembly shift distributions with more pattern elements, revealing an exponential relationship. A case study based on a real application demonstrates how the proposed methodology can be applied to actual industrial cases.