基于主轴电流的铣削力间接监测方法  

Indirect monitoring method of milling force based on spindle current

作　　者：黄颖旭 李波 田锡天[1] HUANG Yingxu;LI Bo;TIAN Xitian(College of Mechanical and Electrical Engineering, Northwestern Polytechnical University, Xi'an 710072, China)

机构地区：[1]西北工业大学机电学院,陕西西安710072

出　　处：《计算机集成制造系统》2022年第1期93-101,共9页Computer Integrated Manufacturing Systems

摘　　要：实时准确地监测铣削状态对于提高加工质量与加工效率具有重要意义,切削力作为重要的加工状态监测对象,因其监测设备昂贵且安装不便而受到限制,为此提出一种考虑刀具磨损的基于主轴电流的铣削力监测方法。首先基于切削微元理论建立了考虑后刀面磨损的铣削力模型,并通过铣削实验进行铣削力模型系数标定;然后对主轴电流与铣削力的关系进行理论建模分析,并基于田口实验设计得到了铣削过程中主轴电流与铣削力的二次回归模型,得到了考虑刀具磨损的主轴电流与切削参数关系模型;最后,通过测量不同切削参数下的刀具磨损实验,验证了基于主轴电流的间接监测铣削力方法的准确性,为实际切削加工过程状态监测提供了有效的理论指导。Real time and accurate monitoring of milling state is of great significance to improve machining quality and efficiency.As an important monitoring object of machining state,cutting force is limited due to expensive monitoring equipment and inconvenient installation.Therefore,a milling force monitoring method based on spindle current considering tool wear was proposed.The milling force model considering flank wear was established based on the cutting micro element theory,and the milling force model coefficients were calibrated through milling experiments.Then,the relationship between spindle current and milling force was analyzed by theoretical modeling.Based on Taguchi experimental design,the quadratic regression model of spindle current and milling force in milling process was obtained,and the relationship model between spindle current and cutting parameters considering tool wear was obtained.The accuracy of indirect monitoring milling force method based on spindle current was verified by measuring tool wear under different cutting parameters,which provided effective theoretical guidance for actual cutting process condition monitoring.

关 键 词：刀具磨损 主轴电流 铣削力 监测方法 加工 

分 类 号：TH39[机械工程—机械制造及自动化]