固定磨料垫研磨摩擦信号的小波包能量特征研究

Study on Wavelet Packet Energy Characteristics on Friction Signal of Lapping with the Fixed Abrasive Pad.

作者信息

Wang Zhankui, Zhang Zhao, Wang Shiwei, Pang Minghua, Ma Lijie, Su Jianxiu

机构信息

Postdoctoral Research Base, Henan Institute of Science and Technology, Xinxiang 453003, China.

Postdoctoral Station, Henan University of Science and Technology, Luoyang 471000, China.

出版信息

Micromachines (Basel). 2022 Jun 21;13(7):981. doi: 10.3390/mi13070981.

DOI:10.3390/mi13070981

PMID:35888798

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9317005/

Abstract

The surface condition of the fixed abrasive pad (FAP) has a significant impact on its machining performance, workpiece material removal rate (MRR), and surface roughness. To clarify the wavelet packet energy characteristics of friction signal under different surface conditions of FAP and its mapping relationship with MRR and workpiece surface quality, FAP samples in different processing stages were obtained through a consolidated abrasive grinding quartz glass experiment. Then, the friction signals in different stages were received by the friction and wear experiment between the FAP and quartz glass workpiece, and the wavelet packet analysis was carried out. The experimental results show that with the increase of lapping time, the surface wear degree of the FAP increased gradually, and the MRR of the workpiece, the surface roughness of the FAP, and the surface roughness of the workpiece decreased slowly. In the wavelet packet energy of friction signal during machining, the energy proportion of frequency band 7 showed an upward trend with the increase of lapping time. The energy proportion of frequency band 8 showed a downward trend with the increase of lapping time. The change characteristics of the two are significantly correlated with the surface condition of the FAP.

摘要

固定磨料垫（FAP）的表面状况对其加工性能、工件材料去除率（MRR）和表面粗糙度有重大影响。为了阐明FAP不同表面状况下摩擦信号的小波包能量特征及其与MRR和工件表面质量的映射关系，通过固结磨料磨削石英玻璃实验获得了不同加工阶段的FAP样本。然后，通过FAP与石英玻璃工件之间的摩擦磨损实验接收不同阶段的摩擦信号，并进行小波包分析。实验结果表明，随着研磨时间的增加，FAP的表面磨损程度逐渐增加，工件的MRR、FAP的表面粗糙度和工件的表面粗糙度缓慢下降。在加工过程中摩擦信号的小波包能量中，频段7的能量比例随着研磨时间的增加呈上升趋势。频段8的能量比例随着研磨时间的增加呈下降趋势。两者的变化特征与FAP的表面状况显著相关。