超声振动辅助铣削钛合金铣削力信号及切屑特征研究

doi:10.3901/JME.2019.07.207

机械工程学报 ›› 2019, Vol. 55 ›› Issue (7): 207-216.doi: 10.3901/JME.2019.07.207

超声振动辅助铣削钛合金铣削力信号及切屑特征研究

倪陈兵, 朱立达, 宁晋生, 杨志超, 刘长福

东北大学机械工程与自动化学院沈阳 110819

收稿日期:2018-04-19 修回日期:2018-09-26 出版日期:2019-04-05 发布日期:2019-04-05
通讯作者: 朱立达(通信作者),男,1979年出生,博士,教授,博士研究生导师。主要研究方向为加工稳定性与精密加工技术、超声振动加工技术和智能诊断与信号处理。E-mail:neulidazhu@163.com
作者简介:倪陈兵,男,1989年出生,博士研究生。主要研究方向为难加工材料超声振动辅助加工机理及工艺。E-mail:nichenbing@126.com
基金资助:
国家自然科学基金（51475087）和中央高校基本科研业务专项资金（N170306005）资助项目。

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

NI Chenbing, ZHU Lida, NING Jinsheng, YANG Zhichao, LIU Changfu

Institute of Advanced Manufacturing and Automation Technology, Northeastern University, Shenyang 110819

Received:2018-04-19 Revised:2018-09-26 Online:2019-04-05 Published:2019-04-05

摘要/Abstract

摘要： 通过对刀具-工件的运动学分析，研究了超声振动辅助铣削过程中断续加工机理，建立了超声辅助铣削过程中刀具净切削时间模型，得到了加工参数和振动参数与刀具净切削时间之间的关系。针对超声加工过程中高频断续加工的特点，进行了超声振动辅助铣削和普通铣削钛合金加工试验，对超声振动铣削和普通铣削钛合金过程中的铣削力信号和切屑特征进行了详细的对比研究。试验结果表明：与普通铣削加工相比，超声振动铣削力信号和切屑形态具有独特特征。施加超声振动之后，超声铣削力信号幅值显著下降，超声铣削力信号由连续信号转变为离散的脉冲式力信号，铣削力信号的频谱特性发生明显变化；超声振动振幅对铣削力幅值具有显著影响。此外，相比普通铣削切屑，超声铣削切屑的尺寸和表面形貌均发生明显改善。

关键词: 超声振动辅助铣削, 断续加工机理, 切削力特征, 切屑特征, 钛合金

Abstract: 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.

Key words: chip characteristics, cutting force characteristics, intermittent machining mechanism, titanium alloy, ultrasonic vibration-assisted milling

中图分类号:

V261

倪陈兵, 朱立达, 宁晋生, 杨志超, 刘长福. 超声振动辅助铣削钛合金铣削力信号及切屑特征研究[J]. 机械工程学报, 2019, 55(7): 207-216.

NI Chenbing, ZHU Lida, NING Jinsheng, YANG Zhichao, LIU Changfu. Research on the Characteristics of Cutting Force Signal and Chip in Ultrasonic Vibration-assisted Milling of Titanium Alloys[J]. Journal of Mechanical Engineering, 2019, 55(7): 207-216.

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超声振动辅助铣削钛合金铣削力信号及切屑特征研究

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

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