Study on the Mechanism of Vibration Reduction by Variable Speed Cutting

Chatter occurring in cutting process is an unstable vibration phenomenon, which affects the machining accuracy and the production efficiency, studied by many researchers for dozens of years. By analyzing the relationship with energy feedback and energy consumption on the machine structure system, this paper revealed that the mechanism of vibration reduction by variable speed cutting, qualitatively analyzed the obvious effect in suppressing cutting chatter by the continuous change of spindle speed. According to the principle of vibration, it established mathematical model of vibration reduction by variable speed cutting. Calculate the spindle phase difference angle within a week and each vibration after a week, thus get variable amplitude values after the start of each cycle. And further example analyzed the advantage of variable speed in suppressing cutting chatter.