钛合金深孔钻切削状态在线监测技术的研究

STUDY ON IN-PROCESS MONITORING TECHNIQUE OF CUTTING STATES IN DEEP-HOLE DRILLING OF TITANIUM ALLOYS

采用电机功率消耗作为评价切削状态是否正常的依据,解决了钛合金深钻削过程中异常状态的监测问题。通过大量钻削实验提出了“自适应”梯度功率监测方案,建立了微型计算机钻削状态在线监测系统,解决了具有复杂工艺过程钛合金深孔加工自动监测问题。

In order to solve the abnormal cutting states monitoring problem in deep-hole drilling of titanium alloys, it is recommended to adopt motor power consumption as the estimation basis of cutting states in this paper. Based on many experimental researches into the signal characteristics at the moment of abnormal cutting states, a monitoring strategy called 'adaptive gradient power monitoring method'is put forward approaching to practical level under present condition, and a in-process monitoring system of were established. Experiments show that the power monitoring method is feasible to be used in deep-hole drilling monitoring, the algorism put for-ward in this paper can avoid doing many pre-experimentsto determine the thresholds, and the monitoring problem in titanium alloy deep-hole drilling with complicated technological processes is solved successfully.