钛合金深窄槽可控振动辅助电解加工试验研究

摘要/Abstract

摘要： 为提高TB6钛合金深窄槽电解加工精度,基于电场仿真分析方法,研究了不同加工方式深窄槽侧壁电流密度和电化学溶解速度分布规律,并采用工艺试验方法对持续进给、振动进给、脉冲与振动耦合3种加工方式进行对比研究。试验结果表明：振动频率和持续进给速度固定时,提高振幅能够显著降低槽宽标准差,提高深窄槽加工一致性；持续进给速度相同时,脉冲与振动耦合的平均槽宽和槽宽标准差均较小,加工精度更高。采用脉冲与振动耦合加工方式,深窄槽入口处平均槽宽为2.62 mm,沿深度方向平均槽宽为2.73 mm,入口处槽宽标准差为0.05 mm,沿深度方向槽宽标准差为0.03 mm。

关键词: TB6钛合金, 深窄槽电解加工, 可控振动, 脉冲输出

Abstract: To improve the ECM accuracy of deep narrow grooves of TB6 titanium alloy,the distributions of current densities and electrochemical dissolution rates of deep narrow groove side-walls in different machining modes were studied based on electric field simulation.Then,a comparative study of 3 kinds of machining modes including continuous feed,vibrating feed,coupling of pulse and vibration were carried out by experiments.The experimental results show that,when the vibration frequency and the continuous feed rate are fixed,the standard deviation of the groove widths may be significantly reduced by increasing the vibration amplitude,and further the machining consistency of the deep narrow grooves is improved; when the continuous feed rates are the same,the average groove widths and standard deviation of groove widths are both smaller by adopting the coupling of pulse and vibration mode,and the machining accuracy is higher.Moreover,the average entrance groove widths of 2.62 mm,the average groove widths along the depth direction of 2.73 mm,the entrance groove width standard deviation of 0.05 mm,and the groove width standard deviation along the depth direction of 0.03 mm may be obtained by using the coupling of pulse and vibration mode.

Key words: TB6 titanium alloy, deep narrow groove electrochemical machining(ECM), controllable vibration, pulse output

中图分类号:

TG662

王峰1,2;赵建社1;刘鼎明1;范延涛1;田宗军1. 钛合金深窄槽可控振动辅助电解加工试验研究[J]. 中国机械工程.

WANG Feng1,2;ZHAO Jianshe1;LIU Dingming1;FAN Yantao1;TIAN Zongjun1. Experimental Research on Controllable Vibration Assisted ECM of Deep Narrow Grooves of Titanium Alloy[J]. China Mechanical Engineering.

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