航空发动机叶片前后缘自由式砂带抛光技术

doi:10.7527/S1000-6893.2016.0179

材料工程与机械制造

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航空发动机叶片前后缘自由式砂带抛光技术

张军锋, 史耀耀, 蔺小军, 段继豪

西北工业大学现代设计与集成制造技术教育部重点实验室, 西安 710072

收稿日期:2016-04-18 修回日期:2016-05-30 出版日期:2017-03-15 发布日期:2016-06-14
通讯作者: 史耀耀,E-mail:shiyy@nwpu.edu.cn E-mail:shiyy@nwpu.edu.cn
基金资助:
国家科技重大专项（2015ZX04001003）

Freestyle belt polishing technology for leading and trailing edges of aero-engine blade

ZHANG Junfeng, SHI Yaoyao, LIN Xiaojun, DUAN Jihao

The Key Laboratory of Contemporary Design and Integrated Manufacturing Technology, Ministry of Education, Northwestern Polytechnical University, Xi'an 710072, China

Received:2016-04-18 Revised:2016-05-30 Online:2017-03-15 Published:2016-06-14
Supported by:
National Science and Technology Major Project (2015ZX04001003)

摘要/Abstract

摘要：

由于叶片前后缘（LTE）的轮廓形状和表面质量将对航空发动机的气动性能和叶片的疲劳性能产生直接影响，因此为提高前后缘的轮廓度和表面质量，通过对目前航空发动机叶片前后缘抛光所存在的问题进行分析，结合叶片前后缘抛光工艺要求，并基于自由式砂带抛光的工艺特点，提出了叶片前后缘自由式砂带抛光工艺方法；针对该抛光工艺方法，建立其砂带张紧力控制系统，确定了抛光加工中的砂带走刀步长计算公式及抛光轨迹规划方法；最后以某型号叶片的前后缘作为加工对象进行抛光实验研究。检测结果显示：叶片前后缘轮廓度误差小于0.01 mm，其表面粗糙度小于0.4 μm，证实了该抛光工艺方法对提高叶片前后缘的轮廓度和表面质量的有效性。

关键词: 航空发动机叶片, 前后缘, 柔性抛光, 自由式砂带, 轨迹规划

Abstract:

As the key part of the blade, the leading and the trailing edges (LTE) play a very important role in aero-engine. The profile of the LTE can directly affect the aerodynamic performance of aero-engine, and its surface quality can largely determine the fatigue life of the blade. To reduce the profile error and improve the surface quality, the problems existing in LTE polishing process are analyzed. Based on the polishing requirements of LTE and the process features of abrasive belt polishing, the method of freestyle belt polishing process with tension force control system for LTE is proposed. The calculation formula for feeding step length and polishing path planning method are obtained. The polishing experiments of a blade are carried out. The test results show that the profile accuracy and surface quality of LTE are improved significantly, with the profile error being less than 0.01 mm and roughness less than 0.4 μm.

Key words: aero-engine blade, leading and trailing edges, flexible polishing, freestyle belt, path planning

中图分类号:

V261.2⁺5

张军锋, 史耀耀, 蔺小军, 段继豪. 航空发动机叶片前后缘自由式砂带抛光技术[J]. 航空学报, 2017, 38(3): 420327-420327.

ZHANG Junfeng, SHI Yaoyao, LIN Xiaojun, DUAN Jihao. Freestyle belt polishing technology for leading and trailing edges of aero-engine blade[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2017, 38(3): 420327-420327.

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E-mail：hkxb@buaa.edu.cn

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航空发动机叶片前后缘自由式砂带抛光技术

Freestyle belt polishing technology for leading and trailing edges of aero-engine blade

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