GAO G F, QIAO H, YUAN Z J, et al.Experimental study on multi-dimensional ultrasonic vibration milling Ti2AlNb alloy[J].Journal of Henan Polytechnic University(Natural Science) ,2023,42(6):110-117.

doi:10.16186/j.cnki.1673-9787.2022010043

Received:2022/01/13

Revised:2022/05/27

Published:2023/11/25

Experimental study on multi-dimensional ultrasonic vibration milling Ti₂AlNb alloy

GAO Guofu, QIAO Huai, YUAN Zhaojie, WANG Meng, WANG Xiaobo, XIANG Daohui

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

Abstract:The kind of Ti₂AlNb alloy is hard and brittle，and the traditional cutting process has some problems of low tool durability and poor processing quality due to the high cutting heat.In this paper，a combination of cutting simulation and experimental research were conducted to study the cutting characteristics of Ti2AlNb alloy through the application of two-dimensional ultrasonic vibration cutting（Two-DUVC），three-dimensional ultrasonic vibration cutting（Three-DUVC） compared to conventional cutting（CC）.The results showed that the three-dimensional cutting forces in ultrasonic vibration milling were less than those in CC.The cutting forces in Two-DUVC and Three-DUVC along the tool feed direction were reduced by 48.6% and 28.3%，respectively，compared to that in CC.Three different cutting methods produced completely different surface micro-textures under the same cutting parameters.The Three-DUVC produced “wheat ears”，and “wheat awns”，appearing in the tool feed direction with strong ultrasonic separation characteristics.With the increasing of the spindle，the roughness value generated in the Two-DUVC was 45.3% at the maximum relative to CC.As the amplitude increased，the separation of the cuttings caused by the ultrasonic vibration was enhanced，and the surface roughness value of the workpiece was reduced by 64.5% while the workpiece amplitude in Two-DUVC was 8μm.The experimental results showed that，ultrasonic vibration machining was one of the effective means to improve the cutting performance of Ti₂AlNb alloy.

Key words:ultrasonic cutting;Ti₂AlNb alloy;cutting characteristic;surface morphology

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