Effect of ultrasonic vibration direction on milling characteristics of TC4 titanium alloy

ZHAO Bo; LI Pengtao; ZHANG Cunying; WANG Xiaobo

doi:10.7527/S1000-6893.2019.23301

ACTA AERONAUTICAET ASTRONAUTICA SINICA >

2020 , Vol. 41 >Issue 2: 623301 - 623301

DOI: https://doi.org/10.7527/S1000-6893.2019.23301

Special Column of High Performance Surface Processing Technology for Componets and Parts with Complex Surface

Effect of ultrasonic vibration direction on milling characteristics of TC4 titanium alloy

ZHAO Bo ,
LI Pengtao ,
ZHANG Cunying ,
WANG Xiaobo

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School of Mechanical and Power Engineering, Henan Polytechnic University, Jiaozuo 454000, China

Received date: 2019-07-22

Revised date: 2019-08-01

Online published: 2019-10-11

Supported by

National Natural Science Foundation of China (U1604255,51475148)

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Abstract

In order to give full play to the advantages of ultrasonic milling titanium alloy, improve the processing effects, and enhance the surface service performance, ultrasonic vibration is applied to the tools and workpieces to find suitable vibration directions and processing parameters. The critical speed of the side edge interrupted cutting is obtained from the theoretical derivation. The effects of different amplitudes and cutting speeds on surface topography, chip morphology, cutting force, and tool wear are investigated. The relationship between the surface microtexture and the friction characteristics is studied. Tests have shown that in both vibration directions, increasing the amplitude reduces the degree of serration of the chips, and increasing the axial amplitude allows the sawtooth chips to be converted into strip-shaped chips. When ultrasonic vibration is applied in the axial direction, the surface microtexture is more easily obtained, while the cutting force is reduced, the tool wear is weakened, and the running-in time of workpiece during friction is reduced. In addition, a method of measuring the ultrasonic vibration frequency under working conditions is proposed by using the spectrum analysis of the cutting force.

Key words： titanium alloy; ultrasonic milling; surface microtexture; chip morphology; tool wear; running-in time

Cite this article

ZHAO Bo , LI Pengtao , ZHANG Cunying , WANG Xiaobo . Effect of ultrasonic vibration direction on milling characteristics of TC4 titanium alloy[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2020 , 41(2) : 623301 -623301 . DOI: 10.7527/S1000-6893.2019.23301

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