A Region-Division Method of Measurement Point Sampling for Thin-Walled Blade Sections Based on CMM

GAO Yuan; LIN Xiaojun; ZHANG Junqi; SHI Yaoyao

doi:10.16080/j.issn1671-833x.2020.07.014

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A Region-Division Method of Measurement Point Sampling for Thin-Walled Blade Sections Based on CMM

更新时间：2025-10-30

- A Region-Division Method of Measurement Point Sampling for Thin-Walled Blade Sections Based on CMM
- Aeronautical Manufacturing Technology Vol. 63, Issue 7, Pages: 14-20(2020)
- 作者机构：
  
  1. 西北工业大学机电学院,西安,710072
  2. 中国航发上海商用航空发动机制造有限责任公司,上海,200241
- 作者简介：
- 基金信息：
- DOI：10.16080/j.issn1671-833x.2020.07.014
  CLC：
- Published：2020
- 稿件说明：
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高源，蔺小军，张俊岐，史耀耀. 基于CMM的薄壁叶片型线测量点分区域采样规划方法[J]. 航空制造技术, 2020, 63(7): 14-20.

GAO Yuan,LIN Xiaojun, ZHANG Junqi,SHI Yaoyao. A Region-Division Method of Measurement Point Sampling for Thin-Walled Blade Sections Based on CMM. Aeronautical Manufacturing Technology, 2020, 63(7): 14-20.
高源，蔺小军，张俊岐，史耀耀. 基于CMM的薄壁叶片型线测量点分区域采样规划方法[J]. 航空制造技术, 2020, 63(7): 14-20. DOI： 10.16080/j.issn1671-833x.2020.07.014.

GAO Yuan,LIN Xiaojun, ZHANG Junqi,SHI Yaoyao. A Region-Division Method of Measurement Point Sampling for Thin-Walled Blade Sections Based on CMM. Aeronautical Manufacturing Technology, 2020, 63(7): 14-20. DOI： 10.16080/j.issn1671-833x.2020.07.014.

摘要

薄壁叶片具有型面复杂，刚性差，加工误差大且分布不均匀的特点。传统的测量点采样规划方法只考虑了薄壁叶片的几何特征，而忽略了其加工误差的分布情况。这直接导致叶片型线重要形状信息丢失，更造成有限测量资源的浪费，限制三坐标测量机精密、高效测量性能的发挥。针对以上问题，提出一种测量点分区域采样规划方法。在测量点采样过程中，既利用叶片型线的几何特征，又兼顾叶片加工误差的分布情况。首先，根据薄壁叶片的特点，提出测量点采样规划的原则；然后，基于所提出的原则，依次从测量区域划分和测量点计算两方面，对测量点分区域采样规划方法进行研究；最后，在实际叶片上，对所提出的方法进行试验验证和对比分析。结果表明，所提方法在满足薄壁叶片几何特征的同时，更加适应其加工误差的分布情况，并且能够提高测量效率和精度。

Abstract

The thin-walled blade has the characteristics of complex surface

poor rigidity

large and non-uniformly distributed machining error. The traditional sampling strategy only considers the geometric features

but ignores the machining error distribution. As a result

it may cause the loss of important shape information of the thin-walled blade

the waste of limited measuring resource and the restriction of the performance of CMM with high precision and efficiency. A region-division method of measurement point sampling is presented for these issues. It considers the machining error distribution as well as the geometric features. Firstly

the principle of measurement point sampling for the thin-walled blade is proposed. Secondly

the point sampling method is studied from two aspects

measurement region division and measurement point calculation. Finally

the proposed algorithm is verified and compared on an actual thin-walled blade. The results show that

the proposed method has a better reflection of the machining error when considering with the geometric characteristics

and can improve the measurement efficiency and accuracy.

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