铣削过程中基于伺服电流信号的切削力监测  

Cutting Force Monitoring Based on Feed Motor Current on a Milling Progress

作　　者：张捷[1] 李海洲[2] 蔡飞[3] 毛新勇[2] 尹玲[2] 

机构地区：[1]华中科技大学能源与动力工程学院,湖北武汉430074 [2]华中科技大学国家数控系统工程技术研究中心,湖北武汉430074 [3]武汉华中数控股份有限公司,湖北武汉430074

出　　处：《机床与液压》2011年第19期1-3,共3页Machine Tool & Hydraulics

基　　金：国家自然科学基金项目(50975216)

摘　　要：刀具破损和刀具磨损的自动检测是数控机床自动加工中的一个重要环节。基于伺服电机电流的切削力监控是一个有效的无传感器方法,该方法的关键是如何从伺服电流信号中准确提取切削刃的力波动表征信号。在对伺服电流信号进行时域、频域分析的基础上,基于可变加工参数给出实时提取切削刃力波动表征信号的方法,并通过相关实验验证了该方法的合理性。Automated detection of tool wear and breakage is one of the most important parts in CNC machining. Cutting force monitoring based on feed. motor current is an effective approach which key is to identify the force token from the feed current signal. Analyzing the feed current signal in time domain and frequency domain, the real-time method to extract the cutting force token from the driver current was given based on variable machining parameters. The rationality of the proposed method was verified through experimental studies.

关 键 词：刀具监测 交流伺服 电机电流 切削力 

分 类 号：O329[理学—一般力学与力学基础]