Study of cutting forces using FE, ANOVA, and BPNN in elliptical vibration cutting of titanium alloy Ti-6Al-4V

2019 ◽  
Vol 105 (12) ◽  
pp. 5105-5120 ◽  
Author(s):  
Haibo Xie ◽  
Zhanjiang Wang
Keyword(s):  
Titanium Alloy ◽  
Cutting Forces ◽  
Elliptical Vibration Cutting ◽  
Vibration Cutting ◽  
Elliptical Vibration

A Study on Elliptical Vibration Cutting by Finite Element Analysis

2011 ◽  
Vol 230-232 ◽  
pp. 1029-1033
Author(s):  
Xiao Qin Zhou ◽  
Shao Xin Zhao ◽  
Zhi Wei Zhu ◽  
Jie Qiong Lin ◽  
Dan Luo
Keyword(s):  
Finite Element ◽  
Stress Distribution ◽  
Cutting Forces ◽  
Contact Region ◽  
Equivalent Stress ◽  
Von Mises Stress ◽  
Element Analysis ◽  
Elliptical Vibration Cutting ◽  
Vibration Cutting ◽  
Elliptical Vibration

In order to reveal the mechanistic characteristics during the elliptical vibration cutting (EVC), A simplified 2-D finite element model is developed. The characteristics of the cutting forces during the EVC process are investigated by comparison with the conventional cutting. The results indicate that the lower averaging values of cutting forces can be obtained and an obvious inverse phenomenon of the thrust force is also observed during the EVC process, which may be beneficial to the chip formation. A detailed analysis of the equivalent stress distribution during the EVC process is carried out. A transient stress distribution is observed during the EVC process, the highly localized Von Mises stress in the tool-chip contact region throughout one EVC cycle may help to form a more continuous chip and lead to the ductile regime removal of brittle materials.

Ultrasonic Elliptical Vibration-Assisted Micro-Groove Turning

2014 ◽  
Vol 625 ◽  
pp. 603-606 ◽  
Author(s):  
Chen Zhang ◽  
Kornel Ehmann ◽  
Ying Guang Li ◽  
Ping Guo
Keyword(s):  
Cutting Forces ◽  
Burr Formation ◽  
Ultrasonic Frequency ◽  
Elliptical Vibration Cutting ◽  
Cutting Method ◽  
Vibration Cutting ◽  
Elliptical Vibration ◽  
Comparison Results ◽  
Series Of Experiments ◽  
Ultrasonic Elliptical Vibration

In ultrasonic vibration the cutting edge of a tool is vibrated in the principal or cutting direction, generally at a constant ultrasonic frequency. The main characteristic of this cutting method is its intermittent nature involving repeated cutting and pausing. In this paper, ultrasonic elliptical vibration cutting is used to assist micro-groove turning of cylindrical surfaces. The elliptical locus during the cutting process is generated by a newly designed 2D resonant ultrasonic vibrator. A series of experiments were performed to verify the effects of the ultrasonic elliptical vibrations. The generated cutting forces and burr formation were compared for the ordinary and the elliptical vibration-assisted cases. Comparison results show the effectiveness of the elliptical vibration cutting method in reducing cutting forces and alleviating burr formation.

scholarly journals Numerical Analysis in Ultrasonic Elliptical Vibration Cutting (UEVC) Combined With Electrical Discharge Cutting (EDC) For Ti6Al4V

2021 ◽  
Author(s):  
Rendi Kurniawan ◽  
Moran Xu ◽  
Chang Ping Li ◽  
Gun Chul Park ◽  
Ye In Kwak ◽  
...  
Keyword(s):  
Numerical Analysis ◽  
Cutting Force ◽  
Cutting Forces ◽  
Electrical Discharge ◽  
Von Mises Stress ◽  
Elliptical Vibration Cutting ◽  
Vibration Cutting ◽  
Elliptical Vibration ◽  
Von Mises ◽  
Ultrasonic Elliptical Vibration

Abstract This paper reports the numerical analysis results of ultrasonic elliptical vibration cutting (UEVC) combined with the electrical discharge cutting (EDC), called UEVC+EDC. UEVC delivers decreasing cutting forces, repressing side-burrs, and lowering tool wear. EDC is a cutting technique using a pulsed spark to remove material using thermal energy. Difficult-to-cut materials, such as Ti-6Al-4V, can be cut effectively by combining these two techniques. A numerical study was performed using ABAQUS finite element analysis (FEA) software by investigating the von Mises stress, cutting forces, and temperature. Numerical analysis was carried out by modifying the ultrasonic vibration frequency, distance of the discharge pulse, discharge voltage, and discharge pulse radius. UEVC+EDC was compared numerically and experimentally with regular cutting (NC) and UEVC in terms of cutting force and tool temperature. The results showed that the UEVC+EDC method could improve the cutting condition by reducing the cutting force and von Mises stress and increasing the tool temperature.

An analytical modelling of cutting forces in orthogonal elliptical vibration cutting

2020 ◽  
pp. 251659842093613
Author(s):  
Arvind Shivaji Shirale ◽  
Sandeep Sahu ◽  
Sanjeev Kumar Patel ◽  
J. Ramkumar ◽  
Shashank Shekhar
Keyword(s):  
Shear Strength ◽  
Cutting Forces ◽  
Metal Cutting ◽  
Maximum Shear Stress ◽  
Shear Angle ◽  
Depth Of Cut ◽  
Elliptical Vibration Cutting ◽  
Vibration Cutting ◽  
Elliptical Vibration ◽  
Strain And Strain Rate

In the present work, an analytical model is proposed to predict the cutting forces in elliptical vibration cutting (EVC). In general, cutting force in metal cutting is a function of the shear angle ( φ) and shear strength ( τ) of the material. However, these parameters vary dynamically over a cutting cycle of EVC. In this work, the shear angle has been modelled based on the plasticity theory of maximum shear stress criteria. For transient shear strength prediction, the Johnson–Cook model is used. This model predicts shear strength for time-varying strain and strain rate in EVC. The obtained analytical results of cutting forces were compared with experimental results published in the literature and found to be in good agreement (within 12% error) with them. Based on the proposed model, the cutting forces can be modelled as a function of cutting process parameters (depth of cut, cutting velocity), tool parameter (rake angle), physical and thermo-mechanical properties for different materials, without any experimental inputs from EVC.

Theoretical and Experimental Investigation on Inclined Ultrasonic Elliptical Vibration Cutting of Alumina Ceramics

2016 ◽  
Vol 138 (12) ◽  
Author(s):  
Wu-Le Zhu ◽  
Yu He ◽  
Kornel F. Ehmann ◽  
Antonio J. Sánchez Egea ◽  
Xinwei Wang ◽  
...  
Keyword(s):  
Cutting Forces ◽  
Removal Rate ◽  
Polycrystalline Diamond ◽  
Machining Parameters ◽  
Machined Surface ◽  
Pure Alumina ◽  
Elliptical Vibration Cutting ◽  
Vibration Cutting ◽  
Elliptical Vibration ◽  
Ultrasonic Elliptical Vibration

Alumina (Al2O3) is an extremely hard and brittle ceramic that is usually used as an abrasive or a cutting tool insert in manufacturing. However, its growing applications in industrial products make it necessary to conduct a study of the machinability of alumina themselves with a cost-effective and flexible method, rather than conventional diamond grinding or laser-assisted processing methods. In this paper, polycrystalline diamond tools are used to investigate the machining of nonporous pure alumina by applying an inclined ultrasonic elliptical vibration cutting (IUEVC) method. First, a theoretical analysis is presented to study the effects of the machining parameters on cutting performances during raster cutting procedures from the prospective of the material removal rate (MRR), tool-chip contact area, cutting edge angle, etc. Then, experiments are carried out to investigate the cutting forces and the areal surface roughness (Sa) in connection with the theoretically established relationships. The results show that the cutting forces are remarkably reduced, by up to more than 90%, and that the machined surface finish is also improved compared with conventional methods.

scholarly journals Elliptical Vibration Cutting (1st Report)

1996 ◽  
Vol 62 (8) ◽  
pp. 1127-1131 ◽  
Author(s):  
Eiji SHAMOTO ◽  
Yoshiyuki MORIMOTO ◽  
Toshimichi MORIWAKI
Keyword(s):  
Elliptical Vibration Cutting ◽  
Vibration Cutting ◽  
Elliptical Vibration

Study on Feed Offset in Elliptical Vibration Cutting

2014 ◽  
Vol 490-491 ◽  
pp. 600-606
Author(s):  
Jie Qiong Lin ◽  
Jin Guo Han ◽  
Dan Jing ◽  
Xian Jing
Keyword(s):  
Surface Topography ◽  
Surface Quality ◽  
Simulation Analysis ◽  
Three Dimensional ◽  
Curved Surface ◽  
Elliptical Vibration Cutting ◽  
Vibration Cutting ◽  
Elliptical Vibration ◽  
Tool Edge

Elliptical vibration cutting (EVC) process and three dimensional cutting surfaces are analyzed in this paper to understand the formation of surface topography. The model of EVC surface topography is established based on curved surface remove function under the assumption that the tool edge is sharp enough. And simulation analysis of surface topography is conducted with different feed offset ratios. Results indicate that RMS change with feed offset ratios λ. The range of RMS is larger when feed offset ratio ranges from both 0 to 0.4 and 0.6 to 1, while the range is smaller when feed offset ratio changes from 0.4 to 0.6. Whats more, RMS reaches the minimum when feed offset ratio is 0.5. The present research provides some references for reducing the height of vibration ripples and improving EVC surface quality.

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