考虑铣削静动态特性及时变刀具磨损的铣削稳定性判别方法OA

Increasing milling parameters improves machining efficiency but tends to cause chatter.To address this issue,this paper proposes a stability identification method that considers the static and dynamic characteristics of the milling process as well as the influence of time varying tool wear.First,a threedimen-sional stability lobe diagram,incorporating radial cutting depth and tool diameter,is established based on the milling force model to determine the basic machining parameters.Second,frequencydomain signal pro-cessing is adopted to eliminate interference from spindle rotational frequency and to identify the actual stabil-ity state.Meanwhile,tool wear is monitored based on variations in cutting edge coefficients,and the wear factor is integrated into the identification system.Online identification test results verify that the proposed method can increase the material removal rate while ensuring process stability.