Material removal mechanism beyond plastic wave propagation rate

Zhou, Libo; Shimizu, Jun; Muroya, Akihito; Eda, Hiroshi

doi:10.1016/s0141-6359(02)00124-1

Cited by 41 publications

(14 citation statements)

References 2 publications

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“…Some feed marks also observed, this is attributed by plastic flow of material during the cutting process. Plastic flow of material on machined surfaces results in higher surface roughness values [16].…”

Section: Methodsmentioning

confidence: 99%

Influence of Coolant in Machinability of Titanium Alloy (Ti-6Al-4V)

Muthukrishnan¹,

Davim

2011

JSEMAT

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Application of titanium alloy has increased many fields since the past 50 years. The major drawback encountered during machining was difficult to cut and the formation of BUE (Built up Edge). This paper presents the tool wear study of TTI 15 ceramic insert (80% Aluminum oxide and 20 % Titanium carbide) on machining Ti-6Al-4V at moderate speed with and without the application of water soluble servo cut S coolant. Titanium alloy is highly refractory metal and machining titanium is challenging to the manufacturers. Experiments were carried out on medium duty lathe. Application of coolant tends to reduce toolwear and minimize adhesion of the work material on the cutting tool during machining and also improves the surface finish. Result provides some useful information

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Section: Methodsmentioning

confidence: 99%

Influence of Coolant in Machinability of Titanium Alloy (Ti-6Al-4V)

Muthukrishnan¹,

Davim

2011

JSEMAT

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“…At a conventional cutting process, the ductile materials first undergo e = 0 1-0.2% elastic deformation, followed by as big as p = 20-40% plastic flow, or three digits higher than the brittle materials, before they are shared off. 19 The stress wave is defined as follows,…”

Section: The Effect Of Cutting Speedmentioning

confidence: 99%

Influences Analysis of Nanometric Cutting Single-Crystal Copper via Molecular Dynamics Simulation

Zhang¹,

Zhao²,

Zhang³

et al. 2013

Jnl of Comp & Theo Nano

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A series of three-dimensional molecular dynamics (MD) simulations are carried out based on hybrid potential model to investigate nanometric cutting process of single-crystal copper using diamond tool. The effects of cutting speed, cutting depth and initial temperature are analyzed using wavelet transform, approximate entropy and polynomial fitting to describe random and stability feathers of cutting force. The techniques of centro-symmetry parameter (CSP) and radial distribution function (RDF) are used to calculate and analyze the detailed mechanism of the dislocation propagation throughout the whole process in which the evolution of lattice symmetry changes and the atomic bonding length can be obtained. In this paper, the mechanism of nanometric cutting proecess of single-crystal copper is given a better understanding. Simulation results also show that the deformation mechanism of single-crystal copper changed when the cutting speed exceeds the plastic wave. In order to have a better understanding of cutting force, the approximate entropy (APEN) is introduced to describe the complexity and uncontrollability of it in different initial temperatures. It is found that the volume of chips increases while the cutting force decreases when the temperature rises. Polynomial fitting method is employed to fit the trend components considering the nonlinear size effect. A deeper understanding of size effect is illustrated by the electron density theory and the distribution of stress.

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“…Therefore, high-speed/super-high speed grinding has the following characteristics: 1) High production efficiency. The material removal rate is multiplied and can reach as much as 2000 mm 3 /(mms) [4][5][6][7][8][9][10]; 2) It improves the dynamic wearability of grains and increases the service life of abrasive wheel, being favorable to grinding automation. The service life of grinding wheel at the speed of 200 m/s is twice that at 80m/s when the abrasive force is fixed; the service life of abrasive wheel at 200 m/s is 7.8 times of that at 80 m/s when the grinding efficiency is fixed [11][12][13][14][15]; 3) The grain cutting thickness decreases, the height of surface plastic-upheaval decreases, and the value of surface roughness decreases.…”

Section: Introductionmentioning

confidence: 99%

Applications of High-Efficiency Abrasive Process with CBN Grinding Wheel

Hou¹,

Li²,

Zhou³

2010

ENG

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High-efficiency abrasive process with CBN grinding wheel is one of the important techniques of advanced manufacture. Combined with raw and finishing machining, it can attain high material removal rate like turning, milling and planning. The difficult-to-grinding materials can also be ground by means of this method with high performance. In the present paper, development status and latest progresses on high-efficiency abrasive machining technologies with CBN grinding wheel relate to high speed and super-high speed grinding, quick point-grinding, high efficiency deep-cut grinding, creep feed deep grinding, heavy-duty snagging and abrasive belt grinding were summarized. The efficiency and parameters range of these abrasive machining processes were compared. The key technologies of high efficiency abrasive machining, including grinding wheel, spindle and bearing, grinder, coolant supplying, installation and orientation of wheel and workpiece and safety defended, as well as intelligent monitor and NC grinding were investigated. It is concluded that high efficiency abrasive machining is a promising technology in the future.

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Material removal mechanism beyond plastic wave propagation rate

Cited by 41 publications

References 2 publications

Influence of Coolant in Machinability of Titanium Alloy (Ti-6Al-4V)

Influence of Coolant in Machinability of Titanium Alloy (Ti-6Al-4V)

Influences Analysis of Nanometric Cutting Single-Crystal Copper via Molecular Dynamics Simulation

Applications of High-Efficiency Abrasive Process with CBN Grinding Wheel

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