航空发动机精锻叶片榫头加工夹具设计

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关键词：航空发动机叶片；夹具；有限元分析；装夹方案；模态测试

中图分类号：V263

DOI：10.3969/j.issn.1004-132X.2025.04.007 开放科学（资源服务）标识码（OSID）：

Design of Jig and Fixture for Machining Precision Forged Blade Tenons of Aeroengine

ZHANG Shen1 LIANG Jiawei² WU Dongbo³ WANG Hui4 ZHAO Bing1 XU Lijun5ZHOU Fen5 1.School of Mechanical Engineering，Qinghai University，Xining，810016

2.Department of Mechanical Engineering，Tsinghua University，Beijing，100084 3.Institute for Aero Engine，Tsinghua University，Beijing，l00084 4.Institute for Aero Engine，Beihang University，Beijing，l00191 5.AECC Aviation Power Co.，Ltd.，Xi'an，710021

Abstract： Precision forged blades of aeroengine were a typical thin-walled parts with complex curved surface. When miling the blade tenons， it was difficult to locate and easy to produce deformations and vibrations. Aiming at the above problems，a design method of multi-point clamping fixture for precision forged blades was proposed，and a low stress hard clamping fixture was designed. Static analysis was used to optimize the clamping position，select the coping element materials and optimize the clamping method. The effectiveness of the fixture was tested by modal tests and vibration tests. The results show that the low-band amplitude of the system is reduced by 50% ，the high-band amplitude by 75% ，the first-order resonance frequency is increased from 210Hz to 402Hz ，the damping ratio under the peak value is increased from 17.4% to 25.9% ，the effective value of vibration displacement signals is reduced by 35% ，and the machining error margin is reduced by 59% ：

Key words： aeroengine blade; Jig and fixture； finite element analysis；clamping scheme；modal test

0 引言

航空发动机是整个飞机的核心，其性能对航空发动机的整体表现起着决定性作用。（剩余17686字）