Wear characteristics of cutting tools in ultrasonic vibration assisted scratching high volume fraction SiC particle reinforced aluminum matrix composites

被引：0
|
作者：
Zha H.-T. [1 ]
Feng P.-F. [1 ,2 ]
Zhang J.-F. [1 ]
Yu D.-W. [1 ]
Wu Z.-J. [1 ]
机构：
[1] Beijing Key Lab of Precision/Ultra-precision Manufacturing Equipments and Control, Tsinghua University, Beijing
[2] Division of Advanced Manufacturing, Graduate School at Shenzhen, Tsinghua University, Shenzhen
来源：
Jilin Daxue Xuebao (Gongxueban)/Journal of Jilin University (Engineering and Technology Edition) | 2019年 / 49卷 / 02期
关键词：
Diamond cutting tool; Mechanics; SiC particle reinforced aluminum matrix composites; Ultrasonic vibration; Wear rule;
D O I：
10.13229/j.cnki.jdxbgxb20171283
中图分类号：
学科分类号：
摘要：
To study the wear mechanism of diamond cutting tools in rotary ultrasonic machining high volume fraction SiC particle reinforced aluminum matrix composites, a conical single diamond tool was prepared to conduct ordinary wear test and ultrasonic vibration assisted wear test respectively. By comparing and analyzing the results, the influence of ultrasonic vibration on the grain wear of diamond cutting tools was obtained in grinding high volume fraction SiC particle reinforced aluminum matrix composites. The results show that the diamond grain mainly undergoes macro-cracking and abrasion in ordinary wear test, while the form of diamond grain wear is mainly micro-breaking and abrasion in ultrasonic vibration assisted wear test. The ultrasonic vibration can reduce the cutting force and the friction coefficient. The adhesion between the diamond grain and the material is alleviated. The velocity of the diamond grain is superimposed with vibration velocity along the axial direction. So its speed increases when the diamond grain cuts into the material and small cracks in the diamond grain expand. Moreover, the direction of the cutting force is constantly changing to make it difficult to form large macro-crack, so that the service life of diamond grain is prolonged. © 2019, Jilin University Press. All right reserved.
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页码：458 / 465
页数：7
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