关键词: 铣削模型|时域响应|铣削稳定性|颤振强度|振动速度

Abstract: To improve the stability and processing quality of milling precision, the valid value of vibration velocity in time-domain was taken as the index for vibration intensity to propose a method for stability prediction and chatter intensity measurement of unstable rotation speed intervals. Curves of relationship between vibration velocity RMS and rotation speed were calculated based on forced vibration model and self-excited vibration model. The stable intervals were identified by analyzing the difference of these two curves. As for the unstable intervals, a RMS difference-rotation speed curve was given for measurement of chatter intensity. The effectiveness of the proposed method was proved by comparing to another existing stability analysis method.

Key words: milling model| time domain response|milling stability|chatter intensity|vibration velocity