The machining surface localization of free-form blade considering form tolerance

  • Neng Wan
  • Peng Liu
  • Zhiyong Chang
  • Zezhong C. Chen


Aerospace blade is the most important part for pneumatic performance with expensive material and cost. Precise NC machining after near-net forming is a trend for aerospace blade machining. If the billet cannot cover the machining surface, the localization is necessary before machining. Because of little machining allowance and various tolerance requirements, free-form surface localization of aerospace blade becomes a puzzle. Traditional free-form surface localization researches focused on finding an appropriate position for design surface to guarantee the enough machining allowance. Different from traditional free-form surface localization research, the form tolerance is considered in the localization optimization. The localization result needs to satisfy the machining allowance and tolerance requirements. To achieve this target, the characteristics of blade modeling and inspection are analyzed. And then, a tolerance constraint is introduced into localization to ensure that the machining surface could satisfy the tolerance requirements. The traditional localization method and the new method considering design tolerance are applied on a compressor blade localization, respectively. From a comparison, the necessity of form tolerance constraint is verified.


Free-form blade Localization Form tolerance Machining allowance 


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Funding information

The financial support of this work from the National Natural Science Foundations of China (51775445, 51475381) and Natural Science Basic Research Plan in Shaanxi Province of China (2016JM5040) are thankfully acknowledged.

Compliance with ethical standards

Conflict of interests

The authors declare that there is no conflict of interests regarding the publication of this article.


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Copyright information

© Springer-Verlag London Ltd., part of Springer Nature 2018

Authors and Affiliations

  • Neng Wan
    • 1
  • Peng Liu
    • 1
  • Zhiyong Chang
    • 1
  • Zezhong C. Chen
    • 2
  1. 1.The Key Laboratory of Contemporary Design and Integrated Manufacturing Technology of Ministry of EducationNorthwestern Polytechnical UniversityXi’anChina
  2. 2.Department of Mechanical and Industrial EngineeringConcordia UniversityMontrealCanada

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