Research on the Characteristics of Cutting Force Signal and Chip in Ultrasonic Vibration-assisted Milling of Titanium Alloys

被引：6
|
作者：
Ni C. [1 ]
Zhu L. [1 ]
Ning J. [1 ]
Yang Z. [1 ]
Liu C. [1 ]
机构：
[1] Institute of Advanced Manufacturing and Automation Technology, Northeastern University, Shenyang
来源：
Jixie Gongcheng Xuebao/Journal of Mechanical Engineering | 2019年 / 55卷 / 07期
关键词：
Chip characteristics; Cutting force characteristics; Intermittent machining mechanism; Titanium alloy; Ultrasonic vibration-assisted milling;
D O I：
10.3901/JME.2019.07.207
中图分类号：
学科分类号：
摘要：
Based on kinematic analysis of the tool and the workpiece in ultrasonic vibration-assisted milling (UVAM), the intermittent machining mechanism in UVAM method is studied and the tool-workpiece net cutting time model is established. And the relationship between machining parameters and net cutting time is given. For high-frequency intermittent processing characteristics in ultrasonic machining (UM), a series of ultrasonic vibration-assisted milling and ordinary milling of titanium alloys experiments is conducted. A detailed comparative study of milling force signals and chips is carried out between these two machining methods. The experimental results indicate that compared with the conventional milling(CM) of Ti-6Al-4V, the cutting force signal and chip in UVAM had unique characteristics. After the application of ultrasonic vibration, the amplitude of the cutting force signal decreased significantly and the milling force signal is transformed from a continuous signal to a discrete oscillating force signal. Meanwhile, the spectral characteristics of the milling force signal have changed obviously. Vibration amplitude has a significant effect on milling force amplitude. Moreover, compared with chips produced by CM method, the size and surface morphology of chips produced by UVAM method had been improved obviously. © 2019 Journal of Mechanical Engineering.
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页码：207 / 216
页数：9
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