钛合金超声椭圆振动辅助车削实验研究

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振动与冲击 ›› 2015, Vol. 34 ›› Issue (6) : 151-154.

论文

钛合金超声椭圆振动辅助车削实验研究

设计钛合金超声椭圆振动辅助车削实验，获得不同超声波电源电压下刀具近似椭圆运动轨迹。分析超声椭圆振动辅助车削切削力变化规律，与普通车削相比超声椭圆振动辅助车削能在较大程度上降低切削力。研究超声椭圆振动辅助车削工件表面粗糙度变化规律，与普通车削相比超声椭圆振动辅助车削工件表面粗度Ra值略增大，Rz值明显降低。分析进给速度对切削力的影响规律，随进给速度增大，普通车削及超声椭圆振动辅助车削切削力均升高。对同一进给速度，与普通车削相比超声椭圆振动辅助车削切削力均降低，且随进给速度增加其降低幅度减小。对比超声椭圆振动辅助车削与普通车削工件表面形貌发现，施加超声椭圆振动后工件表面沿切削速度方向形成有规律振纹。

作者信息 +

Experimental study of ultrasonic elliptical vibration assisted turning of titanium alloy

Tests of ultrasonic elliptical vibration assisted turning (UEVT) of titanium alloy were carried out. The elliptical trajectories of the cutting tool under different power supplying level were obtained. The variations of the cutting forces in UEVT were analyzed. Compared with cutting forces in conventional turning (CT), the cutting forces in UEVT decreased obviously. The surface roughness in UEVT was also studied. Compared with surface roughness in CT, the surface roughness value of Ra is a little increased, while the surface roughness value of Rz is decreased obviously in UEVT. The effect of feed rate on cutting forces was analyzed. The cutting forces increase with the increase of the feed rate both in CT and UEVT. For the same feed rate, cutting forces in UEVT decrease compared with those in CT. And the extent of reduction decreases with the increase of the feed rate. The morphologies of the workpiece were observed both in CT and UEVT. Regular vibration marks along the cutting direction on the workpiece surface were found in UEVT.

Author information +

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摘要

设计钛合金超声椭圆振动辅助车削实验，获得不同超声波电源电压下刀具近似椭圆运动轨迹。分析超声椭圆振动辅助车削切削力变化规律，与普通车削相比超声椭圆振动辅助车削能在较大程度上降低切削力。研究超声椭圆振动辅助车削工件表面粗糙度变化规律，与普通车削相比超声椭圆振动辅助车削工件表面粗度Ra值略增大，Rz值明显降低。分析进给速度对切削力的影响规律，随进给速度增大，普通车削及超声椭圆振动辅助车削切削力均升高。对同一进给速度，与普通车削相比超声椭圆振动辅助车削切削力均降低，且随进给速度增加其降低幅度减小。对比超声椭圆振动辅助车削与普通车削工件表面形貌发现，施加超声椭圆振动后工件表面沿切削速度方向形成有规律振纹。

Abstract

Tests of ultrasonic elliptical vibration assisted turning (UEVT) of titanium alloy were carried out. The elliptical trajectories of the cutting tool under different power supplying level were obtained. The variations of the cutting forces in UEVT were analyzed. Compared with cutting forces in conventional turning (CT), the cutting forces in UEVT decreased obviously. The surface roughness in UEVT was also studied. Compared with surface roughness in CT, the surface roughness value of Ra is a little increased, while the surface roughness value of Rz is decreased obviously in UEVT. The effect of feed rate on cutting forces was analyzed. The cutting forces increase with the increase of the feed rate both in CT and UEVT. For the same feed rate, cutting forces in UEVT decrease compared with those in CT. And the extent of reduction decreases with the increase of the feed rate. The morphologies of the workpiece were observed both in CT and UEVT. Regular vibration marks along the cutting direction on the workpiece surface were found in UEVT.

导出引用

路冬1,2，蔡力钢1，程强1，吴勇波3. 钛合金超声椭圆振动辅助车削实验研究[J]. 振动与冲击, 2015, 34(6): 151-154

LU Dong1,2，CAI Li-gang1，CHENG Qiang1，WU Yong-bo3. Experimental study of ultrasonic elliptical vibration assisted turning of titanium alloy[J]. Journal of Vibration and Shock, 2015, 34(6): 151-154

参考文献

[1] Riaz M, Hussain M S, Maurotto A, et al. Analysis of a free machining α+ β titanium alloy using conventional and ultrasonically assisted turning[J]. Journal of Materials Processing Technology, 2014, 214:906-915.
[2] Maurotto A, Muhammad R, Roy A, et al. Comparing machinability of Ti-15-3-3-3 and Ni-625 alloys in UAT [J]. Procedia CIRP, 2012, 1:330-335.
[3] Maurotto A, Riaz M, Roy A, et al. Enhanced ultrasonically assisted turning of a β-titanium alloy[J]. Ultrasonics, 2013, 53:1242-1250.
[4] Patil S, Joshi S, Tewari A, et al. Modelling and simulation of effect of ultrasonic vibrations on machining of Ti6Al4V[J]. Ultrasonics, 2014, 54(2): 694-705.
[5] 路冬, 黄红福, 吴勇波, 等. 基于ALE方法的钛合金超声振动车削仿真[J]. 振动与冲击, 2013, 32(15): 59- 62.
LU Dong, HUANG Hong-fu, WU Yong-bo, et al. Finite element simulation of ultrasonic assisted turning of titanium alloy based on ALE method[J]. Journal of Vibration and Shock, 2013, 32(15):59-62.
[6] 何俊, 夏斌. TC钛合金超声波椭圆振动切削仿真研究[J]. 组合机床与自动化加工技术, 2013 (11):17-19.
HE Jun, XIA Bin. Simulation study of ultrasonically elliptical vibration cutting of TC4 Ti alloy[J]. Modular Machine tool & Automatic Manufacturing Technique, 2013(11):17-19.
[7] Zhang X Q, Kumar A S, Rahman M, et al. Experimental study on ultrasonic elliptical vibration cutting of hardened steel using PCD tools[J]. Journal of Materials Processing Technology, 2011, 211(11): 1701- 1709.