摘要
钛合金作为一种轻型优质的结构材料,被广泛应用在航天航空等领域。同时,钛合金也是一种难加工材料,传统切削工艺难以实现钛合金高质高效加工。超声振动辅助加工是将超声信号转换为机械振动,使工件与刀具周期性分离,从而实现加工的方法。以TC4钛合金为研究对象,建立了Abaqus二维车削有限元模型,开展了普通车削与超声振动车削钛合金的数值模拟对比研究。仿真结果表明:超声振动车削钛合金可以有效减小加工过程中的平均切削力以及刀尖切削温度,且在设定的参数范围内,振幅越大,改善效果越明显。
As a lightweight and high-quality structural material, titanium alloy is widely used in aerospace and other fields. Meanwhile, titanium alloy is also a difficult-to-process material, so it is difficult to achieve high quality and highly efficient processing of titanium alloy by conventional machining (CM). Ultrasonic vibration machining (UVM) converts ultrasonic signals into mechanical vibrations to achieve periodic separation of workpieces and tools for better machining effects. Therefore, titanium alloy (TC4) is taken as the research object to establish Abaqus two-dimensional turning finite element model and carry out simulation comparison of CM and UVM for TC4. The simulation results show that UAM can effectively reduce the average the cutting force and the cutting temperature at tool tips compared with CM. Moreover, the cutting effects are further improved with increasement of vibration amplitude under set conditions.
作者
庞宇
马原
许超
冯平法
PANG Yu;MA Yuan;XU Chao;FENG Pingfa(Graduate School at Shenzhen, Tsinghua University,Shenzhen 518055,Guangdong,China)
出处
《金刚石与磨料磨具工程》
CAS
北大核心
2019年第2期83-88,共6页
Diamond & Abrasives Engineering
基金
国家自然科学基金(51705281)
深圳市基础研究计划(学科布局)(JCYJ20160428181916222)
关键词
钛合金
超声振动加工
数值模拟
切削力
切削温度
titanium alloy
ultrasonic vibration machining
ABAQUS simulation
cutting force
cutting temperature
