一种精密加工静态误差辨识方法及其系统
By employing principal component decomposition, state inversion, and finite element modeling, the coupling problem between thermal and static errors in precision machine tools was solved, enabling accurate identification of static error characteristics and continuous evaluation of machine tool geometric accuracy, thus ensuring the adaptability of maintenance cycles.
CN122197500BActive Publication Date: 2026-07-17SHENZHEN TUOHAI AUTOMATION EQUIP CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHENZHEN TUOHAI AUTOMATION EQUIP CO LTD
- Filing Date
- 2026-05-15
- Publication Date
- 2026-07-17
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Figure CN122197500B_ABST
Abstract
本发明涉及精密机床误差检测技术领域，具体为一种精密加工静态误差辨识方法及其系统，包括：获取目标机床在预设温度场下的多组热态几何误差数据，经主成分分解提取热变形主导模式主成分系数，构建热态误差基准集并反演得到零位状态理论几何误差分布。将实测零位误差数据与理论分布比对得到残差，通过空间频域分析识别静刚度变化引发的低频误差分量。结合该分量空间特征建立有限元模型，引入材料热膨胀系数模拟热态与静态耦合综合误差场，分离得到静态误差特征量，以此评估机床几何精度保持性并调整维护周期。本发明可实现耦合工况下静态误差的精准分离，提升误差辨识与精度评估的贴合度。
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