复杂薄壁件五轴铣削的刀具姿态稳定性预测  

Prediction of Tool Attitude Stability of Complex Thin-Walled Parts During Five-Axis Milling

作　　者：储金辉 吴禹鹏 许川 张尚雄 潘华东[1] CHU Jinhui;WU Yupeng;XU Chuan;ZHANG Shangxiong;PAN Huadong(Shanghai Spaceflight Precision Machinery Institute,Shanghai 201600,China)

机构地区：[1]上海航天精密机械研究所,上海201600

出　　处：《上海航天(中英文)》2024年第S2期51-59,共9页Aerospace Shanghai(Chinese&English)

基　　金：国家专项(2207-370104-07-02-106030)

摘　　要：在五轴数控加工过程中,由于刀具与工件之间的啮合关系错综复杂,往往会出现铣削颤振现象等,严重影响了加工工艺性,容易造成加工精度下降,加工表面质量差,还可能缩短刀具使用寿命。基于五轴铣削加工稳定性要求,分析主轴转速和轴向切削深度对五轴铣削稳定性的影响,引入刀具姿态对五轴铣削加工稳定性的影响因素,构造刀具姿态稳定图基于再生颤振原理和离散算法进行颤振预测,以期为刀具轨迹生成过程中刀具姿态的选择提供理论依据。In the process of actual five-axis CNC milling,due to the variety of cutter motion forms,the meshing relationship between cutter and work-piece is complex,and the phenomenon of cutting chatter often occurs,which seriously affects the processing technology,resulting in low machining accuracy,poor machining surface quality,and even reduce the cutter life.Based on the stability of five-axis milling,the influence of spindle speed and axial cutting depth on the stability of five-axis milling is analyzed,and the influence of tool attitude on the stability of five-axis milling is further introduced.the tool attitude stability diagram is constructed to predict the chatter based on the regenerative chatter principle and discrete algorithm,which provides a theoretical basis for the selection of tool attitude in the process of tool path generation.

关 键 词：五轴铣削 刀具姿态 Floquet原理 稳定性预测 

分 类 号：TG506[金属学及工艺—金属切削加工及机床]