面向航发叶片同步抛光的型面聚类分组方法

doi:10.3901/JME.2022.15.292

机械工程学报 ›› 2022, Vol. 58 ›› Issue (15): 292-301.doi: 10.3901/JME.2022.15.292

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面向航发叶片同步抛光的型面聚类分组方法

张云¹, 王小东², 陈志同², 朱正清², 叶欢²

1. 北方工业大学机械与材料工程学院北京 100144;
2. 北京航空航天大学机械工程及自动化学院北京 100083

收稿日期:2021-09-01 修回日期:2022-03-06 出版日期:2022-08-05 发布日期:2022-10-13
通讯作者: 陈志同(通信作者),男,1967年出生,博士,教授,博士研究生导师。主要研究方向为先进数控加工技术与装备、复杂曲面CAD/CAM技术和难加工材料切削参数优化。E-mail:ztchen@buaa.edu.cn
作者简介:张云,男,1987年出生,博士,讲师。主要研究方向为先进数控加工技术与装备、复杂曲面CAD/CAM技术。E-mail:zhangyun@ncut.edu.cn
基金资助:
航空科学基金资助项目（20200016112001）。

A Profile Clustering-based Grouping Method for the Synchronous Polishing of Aero-engine Blade

ZHANG Yun¹, WANG Xiaodong², CHEN Zhitong², ZHU Zhengqing², YE Huan²

1. School of Mechanical and Materials Engineering, North China University of Technology, Beijing 100144;
2. School of Mechanical Engineering and Automation, Beihang University, Beijing 100083

Received:2021-09-01 Revised:2022-03-06 Online:2022-08-05 Published:2022-10-13

摘要/Abstract

摘要： 叶片是航空发动机核心零件，其制造能力的提升是航空制造业关注的重点。在多主轴阵列机床高效加工的技术背景下，针对批次叶片实际型面一致性不佳造成的同步定轨迹抛光质量不足问题，提出了基于形状的叶片型面聚类分组方法。首先，依据抛光去量与预压量关系确定组内叶片容许差异。其次，依据抽样叶片实际型面差异确定分组标志点分布。然后，将两两叶片型面的一致性表示为分组标志点实测数据的向量差，在组内叶片容许差异约束下以Ray-Turi指数为目标确立最优分组。最后，以批次叶片为对象验证了所提聚类分组方法的有效性。验证结果表明该方法可提高批次叶片分组后实际型面的组内一致性（实例为0.098 5 mm内），组间超容许差异区域所占比例达到16.67%以上。对分组后叶片进行同步抛光，截面线轮廓度≤0.054 mm，且相同位置处抛光后精度差异≤0.021 mm，从而说明了该方法有助于实现批次叶片的高质量多主轴同步抛光。

关键词: 航发叶片, 复杂型面, 同步抛光, 型面一致性, 聚类分组

Abstract: Blade is the core component of aero-engine, which manufacturing capability improvement has always been the focus of aviation manufacturing industry.With the high-efficiency machining of multi-spindle array machine tool, a profile clustering-based blade grouping method is proposed, aiming at the insufficient quality of synchronous polishing caused by poor consistency of actual profile.Firstly, the allowable intergroup difference is determined by the relationship of polishing indentation and removal depth.Secondly, the distribution of grouping points is determined by the profile difference of sampled blades.Thirdly, the profile consistency of two blades is expressed as the vector difference of measurement data for grouping points, and the grouping result can be established with the Ray-Turi index and allowable intergroup difference.Finally, the grouping and polishing experiment for batch blades has been performed to demonstrate the effectiveness of the proposed method, and the results show that it can improve the profile consistency within each group(less than 0.098 5 mm for the experiment).The area exceeding the allowable intergroup difference between groups is more than 16.67%.After multi-spindle array polishing, the cross-sectional profile of intergroup blades is less than 0.054 mm, and the precision difference at the same position is less than 0.021 mm, which shows that the proposed method is helpful to realize high-quality multi-spindle synchronous polishing of batch blades.

Key words: aero-engine blade, complex profile, synchronous polishing, profile consistency, cluster grouping

中图分类号:

TP391
V263

张云, 王小东, 陈志同, 朱正清, 叶欢. 面向航发叶片同步抛光的型面聚类分组方法[J]. 机械工程学报, 2022, 58(15): 292-301.

ZHANG Yun, WANG Xiaodong, CHEN Zhitong, ZHU Zhengqing, YE Huan. A Profile Clustering-based Grouping Method for the Synchronous Polishing of Aero-engine Blade[J]. Journal of Mechanical Engineering, 2022, 58(15): 292-301.

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面向航发叶片同步抛光的型面聚类分组方法

A Profile Clustering-based Grouping Method for the Synchronous Polishing of Aero-engine Blade

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