考虑进给速度影响的高速铣削稳定性分析方法  

Stability analysis method of high-speed milling considering feed rate influence

作　　者：韩琛潼 郭淼现 江小辉[1] 卫守恒 罗世金 HAN Chentong;GUO Miaoxian;JIANG Xiaohui;WEI Shouheng;LUO Shijin(College of Mechanical Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China)

机构地区：[1]上海理工大学机械工程学院,上海200093

出　　处：《机械强度》2025年第3期11-22,共12页Journal of Mechanical Strength

基　　金：上海市自然科学基金面上项目(22ZR1442900);国家自然科学基金面上项目(52275452);上海航天科创基金项目(SAST2023-063)。

摘　　要：高速加工技术通过提升切削速度和进给速度提高材料的切除率、加工精度、加工质量,是现代加工的主要方式之一。因此,保证高速加工的稳定性是高速加工的应用基础。首先,在传统稳定分析的基础上,进一步考虑了进给量对静态切削厚度的影响,建立了与进给量、刀具径向切深比相关的稳定性模型,并结合稳定性方差比分析了高速铣削加工的稳定性。然后,在单因素变进给速度试验的基础上,设计了滤除主轴转速频率分量的滤波器,并使用滤波信号序列与原始信号序列的方差比分析连续变轴向切深试验的铣削稳定性变化,验证了考虑进给速度影响高速铣削加工稳定性分析方法的有效性。结果表明,针对小径向切深的高速加工,所提方法可以更准确地实现铣削的稳定性判定。并且不稳定切削的极限轴向切深会随着进给量的增加而小幅度变化,进给速度会加剧铣削系统的不稳定程度。High-speed machining technology by improving the cutting speed and feed rate to improve the material cutting rate,machining accuracy and machining quality,is one of the main ways of modern processing.Therefore,to ensure the stability of high-speed machining is the basis of application of high-speed machining.Firstly,based on the traditional stability analysis,the influence of feed rate on the static cutting thickness was further considered,the stability model related to feed rate and radial cutting depth ratio of tool was established,and the stability of high-speed milling was analyzed by combining stability variance ratio.Secondly,based on the single factor variable feed rate test,a filter was designed to filter the frequency component of the spindle speed.The variance ratio between the filtered signal sequence and the original signal sequence was used to analyze the milling stability changes of the continuous variable axial depth test,and the validity of the analysis method considering the feed rate to affect the stability of high-speed milling was verified.The results show that the proposed method can determine milling stability more accurately for high-speed machining with small radial cutting depth.And the axial cutting depth of unstable cutting limit changes slightly with the increase of feed rate,and the feed rate will aggravate the instability of milling system.

关 键 词：进给速度 径向切深 铣削稳定性 静态切削厚度 稳定性识别 

分 类 号：TG50[金属学及工艺—金属切削加工及机床]