A method for controlling chatter of a thin-walled workpiece and a cutting machining chatter suppression system

By introducing a mathematical model of low-frequency vibration and a piezoelectric actuation component, the problem of controlling vibration marks during cutting of thin-walled parts was solved, achieving efficient and high-precision cutting, expanding the stability domain, and reducing the processing difficulty and scrap rate.

CN122411615APending Publication Date: 2026-07-17WUHAN DIGITAL DESIGN & MANUFACTURING INNOVATION CENTER CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-03-23
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing technologies are difficult to effectively suppress cutting vibrations in the machining of thin-walled parts, resulting in decreased machining quality and high scrap rates. This is especially true in high-end manufacturing fields such as aerospace skin and electronic housings, where the on-site debugging efficiency of active suppression strategies is low and the adaptability to working conditions is difficult to meet the requirements of high efficiency and high precision.

Method used

By establishing a mathematical model of the radial vibration of the cutting tool, introducing low-frequency vibration, calculating the rotational frequency period of the target cutting tool, constructing a cutting dynamics equation in state space form, and using a piezoelectric actuator to apply target low-frequency vibration to counteract chatter, thus achieving chatter-free cutting.

Benefits of technology

It achieves efficient and high-precision cutting of thin-walled parts, expands the cutting stability range, reduces machining difficulty and scrap rate, and meets the machining needs of high-end manufacturing.

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Abstract

本发明的一种引入低频振动的薄壁件振纹控制方法及切削加工颤振抑制系统,基于动力学原理构建薄壁件加工时刀具径向振动的数学模型,求解出在引入低频振动条件下能够实现无振纹切削的理想周期,计算振纹控制所需的目标刀具转频周期;引入时延系数将二自由度切削动力学方程转换至状态空间形式并进行离散化处理,判断振纹是否产生;对刀位点处的振纹生成预测模型,通过反演计算求解目标低频频率。本发明的有益效果:向切削过程施加该目标低频频率的振动,目标低频频率的振动与原颤振振动叠加抵消,对刀具的颤振实时消除,满足主动抑制策略现场调试要求,工况适配性难度低,使得薄壁件的切削稳定域得到拓展,满足金属薄壁件高效、高精度的加工需求。
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