Measurement and Evaluation Method for Quality of Complex Free-Form Surface Based on Uncertainty of Measurement

doi:10.7652/xjtuxb201608004

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Measurement and Evaluation Method for Quality of Complex Free-Form Surface Based on Uncertainty of Measurement

更新时间：2025-05-08

- Measurement and Evaluation Method for Quality of Complex Free-Form Surface Based on Uncertainty of Measurement
- Vol. 50, Issue 8, Pages: 20-25(2016)
- 作者机构：
  
  电子科技大学机械电子工程学院,成都,611731
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb201608004
  CLC： TH115
- Online First：10 August 2016，
  
  Published：2016
- 稿件说明：
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Measurement and Evaluation Method for Quality of Complex Free-Form Surface Based on Uncertainty of Measurement[J]. 2016, 50(8): 20-25.
DOI：

Measurement and Evaluation Method for Quality of Complex Free-Form Surface Based on Uncertainty of Measurement[J]. 2016, 50(8): 20-25. DOI： 10.7652/xjtuxb201608004.

摘要

针对国内外标准中对与复杂自由曲面零件高物理性能密切相关的表面加工质量的测量和评价存在很多不确定性的问题

提出了根据工件的曲率分布和曲面连续性分布确定表面质量测量位置的方法

发现表面质量的极值区域与曲率极值及曲面连续性突变的位置一致

该方法可以快速有效地确定表面质量的测量位置; 基于测量不确定度分析提出了波纹度截止波长λ

的确定方法

发现国家标准中推荐的λ

=10λ

并不一定是合理的

该方法有助于得到高置信度的表面质量评价指标

实验结果验证了该方法的可行性

并表明了切削振痕属于波纹度范畴

波纹度值是理想的评价参数。上述研究对于完善现有标准中表面质量测量位置及波纹度截止波长的确定具有实际意义。

Abstract

A method is proposed to solve the problem that the surface machining quality is closely related to high physical properties of free-form surface while there exist many uncertainties of measurement and evaluation on surface quality in domestic and international standards. The method is used to determine the surface quality measuring position based on the distribution of workpiece curvature and surface continuity. The method finds the extremal area of surface quality that agrees with the mutation position of surface continuity and curvature extreme

and can quickly and effectively determine the measuring position of surface quality. A method to determine the waviness cut-off wavelength λ

is proposed based on measurement uncertainty

and it

is found that λ

=10λ

in standards is not reasonable. The method is helpful to get highly confident evaluation index of surface quality. Test results verifies the feasibility of the method

and show that cutting chatters belong to waviness

and the value of waviness W

is an ideal evaluation parameter. This study is beneficial to consummating the determination of measuring position and waviness cut-off wavelength in existing standards.

关键词

Keywords

references

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