Vibration Characteristics of the Longitudinal-torsional Composite Inhomogeneous Media Ultrasonic Milling System

被引：1
|
作者：
Zhang C. [1 ,2 ]
Zhao B. [1 ]
机构：
[1] School of Mechanical and Power Engineering, Henan Polytechnic University, Jiaozuo
[2] College of Intelligent Manufacturing and Automation, Henan University of Animal Husbandry and Economy, Zhengzhou
来源：
Jixie Gongcheng Xuebao/Journal of Mechanical Engineering | 2019年 / 55卷 / 19期
关键词：
Amplitude ratio of the torsional-longitudinal; Helical grooves; Inhomogeneous media; Longitudinal-torsional composite vibration; Surface quality; Ultrasonic milling;
D O I：
10.3901/JME.2019.19.221
中图分类号：
学科分类号：
摘要：
The material is processed by the longitudinal-torsional(L-T)composite ultrasonic vibration milling. Due to the size limitation of the ultrasonic vibration system, the 1/4 wavelength theory is used to design the inhomogeneous media ultrasonic variable amplitude system with the combination of the transducer and the composite horn. Longitudinal-torsional resonance is realized by designing spiral grooves on the horn, and the modal transformation theory of L-T vibration is analyed. The finite element analysis of the L-T composite inhomogeneous media ultrasonic variable amplitude system is studied. The simulation results show that the theoretical value of the natural frequency is close to the simulation value. The deviation is only 0.245%. The performed analysis of helical grooves structural characteristics reveal that the depth has great influence on the natural frequency and the amplitude ratio of the torsional-longitudinal, the influence of the helical angle is second, and the width has the smallest effect on the system performance. The test experimental data of the natural frequency and torsional-longitudinal amplitude ratio have the same trend with the simulation results. Through the comparison of two machining experiments with and without L-T ultrasonic vibration, the results show that the surface roughness values of TC4 and C/C carbon fibre in the L-T ultrasonic vibration milling are dropped by 78% and 47%. The structure of L-T inhomogeneous media ultrasonic vibration milling system is compact, which vibration amplitude and direction can be controlled reliably, meanwhile, the L-T composite ultrasonic vibration milling can effectively improve the workpiece surface processing quality. © 2019 Journal of Mechanical Engineering.
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页码：221 / 232
页数：11
相关论文
共 27 条
  • [1] Feng P., Wang J., Zhang J., Et al., Research status and future prospects of rotary ultrasonic machining of hard and brittle materials, Journal of Mechanical Engineering, 53, 19, pp. 3-21, (2017)
  • [2] Paktimat H., Amini S., Numerical and experimental studies of longitudinal and longitudinal-torsional vibrations in drilling of AISI 1045, International Journal of Advanced Manufacturing Technology, 94, pp. 2577-2592, (2018)
  • [3] Shao Z., Li Z., Zhang D., Et al., Study on the thrust force and chip in rotary ultrasonic-assisted drilling of titanium alloys (Ti6Al4V), Journal of Mechanical Engineering, 53, 19, pp. 66-72, (2017)
  • [4] Pi J., Xu X., Research on longitudinal-tersional resonance ultrasonic milling, China Mechanical Engineering, 20, 10, pp. 1163-1169, (2009)
  • [5] Tang J., Zhao B., Stability analysis of the separated longitudinal-torsional composite ultrasonic milling, Acta Rmamentarii, 36, 7, pp. 1318-1325, (2015)
  • [6] Tang J., Zhao B., A new longitudinal-torsional composite ultrasonic milling system with a single excitation, Journal of Vibration and Shock, 34, 6, pp. 57-71, (2015)
  • [7] Tang J., Zhao B., Study on a new type of longitudinal-torsional composite ultrasonic vibration system, Mechanical Science and Technology for Aerospace Engineering, 34, 5, pp. 742-747, (2015)
  • [8] Luo A., Guo W., Research on surface strengthening by ultrasonic deep rolling with longitudinal-torsional vibration, Surface Technology, 44, 5, pp. 106-110, (2015)
  • [9] Li G., Design of ultrasonic transducer with a quarter wavelength composite exponential horn, Machinery Design and Manufacture, 5, pp. 1-3, (2009)
  • [10] Li J., Effect of bolt on the performance parameters of piezoelectric transducer, Piezoelectrics and Acoustooptics, 32, 6, pp. 985-990, (2010)
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