Research on Fuzzy Control for High Speed Milling Chatter of Intelligent Spindle

doi:10.3901/JME.2021.13.055

Abstract

Abstract: In the process of high speed and high efficiency machining of parts such as aeronautical blades, chatter is more likely to occur than low speed cutting process due to the weakening of the damping effect in the cutting process. As one of the main functions of intelligent spindle, chatter monitoring and control is an effective way to solve the chatter problem in high speed and high efficiency machining process. First of all, an active control structure is designed by integrating piezoelectric actuators and displacement sensors into the spindle system. According to the structure, the active control system model is developed. Then, the dynamic characteristics of the active spindle structure are analyzed. Based on that, the control rules and the fuzzy controller are developed. Next, the system equation is obtained through hammer tests and sweep-frequency tests. A numerical example is also performed to analyze the chatter control effects. Finally, chatter control milling experiments are performed. The results show that the proposed active control method can effectively control milling chatter and improve the stability of the milling process.

Key words: high speed milling, chatter, fuzzy control, active control, piezoelectric actuator

CLC Number:

TG547

CAO Hongrui, LI Denghui, LIU Jinxin, ZHANG Xingwu, CHEN Xuefeng. Research on Fuzzy Control for High Speed Milling Chatter of Intelligent Spindle[J]. Journal of Mechanical Engineering, 2021, 57(13): 55-62.

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