Investigation on disc cutter behaviors in cutting rocks of different strengths and reverse estimation of rock strengths from experimental cutting forces

This paper gives a brief explanation of the failure mechanism of rock fragmentation in rock cutting. The JOHNSON_HOLMGIST_CONCRETE is selected as the rock material model in numerical simulation with confining pressure and damage influence introduced. We use the non-linear dynamic finite element software LS/DYNA to simulate the dynamic process of cutting rock. The cutting forces acting on disc cutter are computed. The relationship between cutting forces and penetration depth, confining pressure and damage parameters are obtained. The results show that, the cutting forces increase with the penetration depth. They are larger in equal confining pressure than unequal condition. The forces are amplified with the damage parameters increasing. The conclusion provides a reference for the prediction of the cutting forces.

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Predicting Cutting Forces for Oblique Machining Conditions

Proceedings of the Institution of Mechanical Engineers ◽

10.1243/pime_proc_1982_196_015_02 ◽

1982 ◽

Vol 196 (1) ◽

pp. 141-148 ◽

Cited By ~ 33

Author(s):

G C I Lin ◽

P Mathew ◽

P L B Oxley ◽

A R Watson

Keyword(s):

Thermal Properties ◽

Flow Stress ◽

Cutting Force ◽

Plane Strain ◽

Cutting Forces ◽

Material Flow ◽

Cutting Conditions ◽

Orthogonal Plane ◽

Simplifying Assumptions ◽

Experimental Cutting

Using orthogonal (plane strain) machining theory together with certain simplifying assumptions based on experimental observations it is shown how the three components of cutting force in oblique machining can be predicted from a knowledge of the work material flow stress and thermal properties and the cutting conditions. A comparison of predicted and experimental cutting force results is given.

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Cutting Model in Machining of Al/SiCp Metal Matrix Composite

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.410.291 ◽

2011 ◽

Vol 410 ◽

pp. 291-297

Author(s):

Sayed Mohamad Nikouei ◽

R. Yousefi ◽

Mohammad Ali Kouchakzadeh ◽

M.A. Kadivar

Keyword(s):

Chip Formation ◽

Cutting Forces ◽

Metal Matrix ◽

Cutting Speed ◽

Shear Plane ◽

Good Method ◽

Depth Of Cut ◽

Machining Forces ◽

Experimental Cutting ◽

Cutting Model

Prediction of shear plane angle is a way for prediction of the mechanism of chip formation, machining forces and so on. In this study, Merchant and Lee-Shaffer theories are used for prediction of shear plane angles and cutting forces in machining of Al/SiCpMMC with 20% of SiC as reinforcement particles. The experimental cutting forces are compared with the calculated cutting force based on shear plane angles extracted from Merchant and Lee-Shaffer theories. The variation of these cutting forces with cutting speed, feed rate and depth of cut has been discussed. The results showed that Merchant theory may be used as a good method for prediction of chip formation in machining of Al/SiCpMMC.

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A New Method for Determining the Chip Geometry in Milling

Materials Science Forum ◽

10.4028/www.scientific.net/msf.526.7 ◽

2006 ◽

Vol 526 ◽

pp. 7-12

Author(s):

M. San Juan ◽

Francisco Santos Martin ◽

T. de la Fuente ◽

S. Aranda

Keyword(s):

Cutting Forces ◽

3D Model ◽

Cutting Process ◽

New Method ◽

Fem Simulations ◽

New Development ◽

Experimental Cutting ◽

Chip Geometry

Frequently, to validate FEM simulations of the cutting process it is compared the predicted results with the experimental cutting forces. In addition, other parameters are measured and it is possible to predict the chip geometry in some particular conditions. This paper presents a new development of the photogrammetry and its applications in the study of the chip geometry. In the orthogonal milling case, it is possible to obtain a 3D model of the deformed chip employing photogrammetry digitization techniques.

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Research on the Machining Behaviors in High Speed Milling Cellular Aluminium Alloy

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.472-475.1087 ◽

2012 ◽

Vol 472-475 ◽

pp. 1087-1090

Author(s):

Fa Zhan Yang ◽

Xin Zhuang ◽

Wan Hua Zhao ◽

Yong Yang

Keyword(s):

Aluminium Alloy ◽

Cutting Forces ◽

High Speed ◽

Cutting Parameters ◽

Point Of View ◽

Element Analysis ◽

Measuring Device ◽

Tool Wear Mechanisms ◽

Experimental Cutting ◽

Cemented Carbide Tools

The purpose of this investigation is to examine the machining behavior of cemented carbide tools in dry hard milling of cellular aluminium alloy (6N01) by experiments and finite-element analysis. From the machining point of view, Cellular aluminium alloy are often considered as poor machinability materials. Milling tests were carried out by using a three-head milling machine and a milling force measuring device. For this purpose, both microscopic and microstructural aspects of the tools were taken into consideration. Meanwhile, the cutting forces and the noise intensity are also considered in the experiment. Results show that cutting forces vary greatly with the experimental cutting parameters. Additionally, the noise field intensity increased greatly as the feed rate increased. Analysis indicated that the major tool wear mechanisms observed in the machining tests involve adhesive wear and abrasion wear.

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Investigation of Cutting Model in Machining of Al/SiCp Metal Matrix Composite

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.117-119.1465 ◽

2011 ◽

Vol 117-119 ◽

pp. 1465-1470

Author(s):

Sayed Mohamad Nikouei ◽

Mohammad Ali Kouchakzadeh ◽

R. Yousefi ◽

M.A. Kadivar

Keyword(s):

Chip Formation ◽

Cutting Forces ◽

Metal Matrix ◽

Cutting Speed ◽

Shear Plane ◽

Good Method ◽

Depth Of Cut ◽

Machining Forces ◽

Experimental Cutting ◽

Cutting Model

Prediction of shear plane angle is a way for prediction of the mechanism of chip formation, machining forces and so on. In this study, Merchant and Lee-Shaffer theories are used to predict the shear plane angles and cutting forces in machining of Al/SiCpMMC. The experimental cutting forces are compared with the calculated cutting force based on shear plane angles extracted from Merchant and Lee-Shaffer theories. The variation of these cutting forces with cutting speed, feed rate and depth of cut has been discussed. The results show that Merchant theory may be used as a good method for prediction of chip formation in machining of Al/SiCpMMC.

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Experimental Cutting Force Properties on Interpenetrating Network Composites with Double Metal Phases

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.680.123 ◽

2014 ◽

Vol 680 ◽

pp. 123-126

Author(s):

Ning Fan ◽

Yong Yu ◽

Yang Bai

Keyword(s):

Cutting Force ◽

Cutting Forces ◽

Processing System ◽

Cutting Parameters ◽

Interpenetrating Network ◽

Resistance Strain Gage ◽

Machining Quality ◽

Experimental Cutting ◽

Data Acquisition And Processing ◽

Metal Phases

Cutting properties of interpenetrating network composites are important to ensure machining quality. The cutting force signals were measured by resistance strain gage of octagonal ring style and data acquisition and processing system. The results show that the cutting forces are affected by cutting conditions. To average cutting forces of interpenetrating network composites, the laws are basically consistent with that of the traditional materials. Because of the reinforced phase, the sudden cutting forces arise in cutting process whose values are relate to cutting parameters and reinforced phase dimensions.

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