通过在大量实验，获取了镗削加工中振动加速度、切削力和切削热信号数据，对于不同切削形态下各种信号的特征进行了深入讨论，并对用于切屑状态分类的各种特征向量的优劣进行了比较与分析． Through a large number of experiments, the vibration acceleration, cutting force and cutting heat signal data were acquired during boring machining. The characteristics of various signals under different cutting patterns were discussed in depth. And various feature vectors used for chip state classification Pros and cons were compared and analyzed.