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A robust tolerance design method based on process capability.

Yan-long Cao1, Jiang-xin Yang, Zhao-tong Wu

  • 1Institute of Production Engineering, Zhejiang University, Hangzhou 310027, China. caoyanlongxh@yahoo.com.cn

Journal of Zhejiang University. Science
|December 10, 2003
PubMed
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This study introduces a robust tolerance design method using Process Capability Indices (PCI). It ensures reliable component tolerance and manufacturing process selection, even with uncertainties.

Area of Science:

  • Engineering
  • Manufacturing Processes
  • Quality Control

Background:

  • Traditional tolerance design often overlooks real-world manufacturing variations and uncertainties.
  • Process Capability Indices (PCI) are crucial metrics for assessing manufacturing process stability and predictability.

Purpose of the Study:

  • To develop a robust tolerance design methodology incorporating Process Capability Indices (PCI).
  • To enable selection of component tolerances and manufacturing processes aligned with actual manufacturing contexts.
  • To evaluate the design's robustness against uncertainties in manufacturing.

Main Methods:

  • The proposed method utilizes Process Capability Indices (PCI) for tolerance allocation.
  • It integrates real manufacturing context into the design selection process.

Related Experiment Videos

  • Robustness analysis is performed to assess feasibility under uncertainty.

    • Main Results:

    • The developed method provides a framework for selecting appropriate component tolerances.
    • It facilitates the identification of suitable manufacturing processes based on capability.
    • The approach demonstrates enhanced robustness in design feasibility when facing uncertainties.

    Conclusions:

    • The proposed robust tolerance design method, based on PCI, yields reliable outcomes.
    • This approach enhances the selection of component tolerances and manufacturing processes.
    • It offers a more dependable design strategy for manufacturing under uncertainty.