|
|
|
| Energy Collection of Cutting Vibration Based on Piezoelectric Effect and Application of Damping Tools |
| YANG Yiqing1 , SHEN Rui1 , GAO Haoyang1 , HE Wanlin2 , ZHAO Hongjie2 |
| (1. Beihang University, Beijing 100191, China; 2. Capital Aerospace Machinery Co., Ltd., Beijing 100076, China) |
|
|
|
|
Abstract The tool with large aspect ratio is widely used in machining workpieces with deep cavity and deep hole characteristics. With the increase of the suspension length, the equivalent stiffness of the tool decreases, which leads to strong cutting vibration. The design of large aspect ratio turning tool with built-in piezoelectric ceramic damper can transform the vibration of main structure into the vibration of damper mass and the electric energy output of piezoelectric ceramic, so as to improve the vibration reduction effect. The modal experiment shows that the resonance peak value of the damped tool is reduced by 80.1% compared with the original tool. Finally, several cutting experiments were carried out. After adding damper, the peak value of tool’s FRF decreased by 72%, and the surface roughness of the workpiece decreased by 67.2%. At the same time, the output voltage signal collected is 1.1–10.1V, which was closely related to the cutting vibration.
|
|
|
|
|
|
|
|
|
2021, 
