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三维椭圆振动切削Ti6Al4V时切削力与残余应力的有限元研究

Finite Element Investigation on Cutting Force and Residual Stress in 3D Elliptical Vibration Cutting Ti6Al4V.

作者信息

Li Shiyu, Han Jinguo, Yu Haiqiang, Wang Jinhui, Lu Mingming, Tian Yebing, Lin Jieqiong

机构信息

School of Mechanical Engineering, Shandong University of Technology, Zibo 255049, China.

Shandong Provincial Key Laboratory of Precision Manufacturing and Non-Traditional Machining, Shandong University of Technology, Zibo 255049, China.

出版信息

Micromachines (Basel). 2022 Aug 8;13(8):1278. doi: 10.3390/mi13081278.

DOI:10.3390/mi13081278
PMID:36014200
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9412402/
Abstract

Titanium alloy is a typical difficult-to-machine material with features of superhigh strength and hardness, and low elastic modulus. It is difficult to guarantee the processing quality and efficiency due to the high cutting force and tool wear in conventional cutting. Elliptical vibration cutting (EVC) as an effective method can improve the machinability of titanium alloys. In this paper, the finite element method (FEM) was adopted to study the cutting force and residual stress of 3D EVC in machining of Ti6Al4V. The Johnson-Cook constitutive model was utilized to illustrate the plastic behavior of Ti6Al4V alloy. The kinematics of the 3D EVC was described, and then the influence of various cutting speeds, vibration amplitudes, vibration frequencies and depths of cut on cutting force and residual stress were carried out and analyzed. The simulation results show that the cutting speed, vibration amplitude , vibration frequency and depth of cut have larger effect on principal force. In addition, the compressive stress layer can be easily obtained near the machined surface by using 3D EVC, which is helpful to improve the working performance of workpiece.

摘要

钛合金是一种典型的难加工材料，具有超高强度、硬度以及低弹性模量的特点。由于传统切削中切削力大且刀具磨损严重，难以保证加工质量和效率。椭圆振动切削（EVC）作为一种有效方法，可以改善钛合金的可加工性。本文采用有限元方法（FEM）研究了Ti6Al4V加工中三维椭圆振动切削的切削力和残余应力。利用Johnson-Cook本构模型描述Ti6Al4V合金的塑性行为。阐述了三维椭圆振动切削的运动学，然后分析了不同切削速度、振动幅度、振动频率和切削深度对切削力和残余应力的影响。模拟结果表明，切削速度、振动幅度、振动频率和切削深度对主切削力有较大影响。此外，采用三维椭圆振动切削可在加工表面附近轻松获得压应力层，这有助于提高工件的工作性能。

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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/58d3/9412402/888b78a3dba0/micromachines-13-01278-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/58d3/9412402/79701db049a6/micromachines-13-01278-g013.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/58d3/9412402/3ec4927a8f1d/micromachines-13-01278-g017.jpg

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Study on the Material Removal Mechanism of Ultrasonic Elliptical Vibration Cutting of Medical β Titanium Alloy.医用β钛合金超声椭圆振动切削材料去除机理研究
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2
An Investigation of Cutting Performance and Action Mechanism in Ultrasonic Vibration-Assisted Milling of Ti6Al4V Using a PCD Tool.使用聚晶金刚石刀具对Ti6Al4V进行超声振动辅助铣削时的切削性能及作用机理研究
Micromachines (Basel). 2021 Oct 28;12(11):1319. doi: 10.3390/mi12111319.
3
Study on Ti-6Al-4V Alloy Machining Applying the Non-Resonant Three-Dimensional Elliptical Vibration Cutting.
基于泰勒因子模型和铣削表面微观结构演变的Ti-6Al-4V铣削力预测模型
Micromachines (Basel). 2022 Sep 27;13(10):1618. doi: 10.3390/mi13101618.
应用非共振三维椭圆振动切削对Ti-6Al-4V合金进行加工的研究。
Micromachines (Basel). 2017 Oct 13;8(10):306. doi: 10.3390/mi8100306.