基于主轴电流的铣削力间接监测方法

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...

Indirect monitoring method of milling force based on spindle current

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.