一种面向航空发动机薄壁类转子零件圆轮廓测量的夹紧误差识别与滤除方法
By using Fourier transform and filter techniques to identify and suppress clamping errors in a three-jaw chuck, the problem of low measurement accuracy for thin-walled rotor parts of aero-engines was solved, achieving efficient error filtering and true contour restoration.
CN122412781APending Publication Date: 2026-07-17AECC SICHUAN GAS TURBINE RES INST
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Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- AECC SICHUAN GAS TURBINE RES INST
- Filing Date
- 2026-06-17
- Publication Date
- 2026-07-17
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Figure CN122412781A_ABST
Abstract
本申请提供了一种面向航空发动机薄壁类转子零件圆轮廓测量的夹紧误差识别与滤除方法，属于航空发动机技术领域，包括将被测转子零件通过三爪卡盘夹紧于转台上，通过轮廓测量系统获取被测转子零件的极坐标轮廓数据；基于快速傅里叶变换对极坐标轮廓数据进行频域展开，获得频谱序列；针对三爪夹爪均匀分布与三爪夹爪非均匀分布的情况，分别构建不同的滤波器，对特定频率分量进行有选择抑制，获得滤波后的频谱序列；通过逆傅里叶变换对滤波后的频谱序列进行还原，获得消除夹紧误差后的真实圆轮廓数据。本方法可有效恢复被测零件真实轮廓形貌，兼顾了误差抑制与信息保留，提高测量数据的准确性和后续分析的可信度。
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