Structuring Control of Facial Layer during Edge Cutting Machining

2019 ◽  
Vol 973 ◽  
pp. 51-55
Author(s):  
Dmitriy V. Kraynev ◽  
Alexander S. Sergeev ◽  
Zhanna S. Tikhonova
Keyword(s):  
Cutting Force ◽  
Performance Characteristics ◽  
Force Component ◽  
Thermoelectromotive Force ◽  
Vibroacoustic Signal ◽  
Efficiency Increase ◽  
Surface Performance

The article considers efficiency increase of formation of surface performance characteristics of machine components. The possibility of structuring control of facial layer on the basis of measuring of thermoelectromotive force (thermo-emf), cutting force component and also vibroacoustic signal has been scrutinized.

Experimental Investigation of Microcutting Mechanisms in Marble Grinding

2009 ◽  
Vol 131 (6) ◽  
Author(s):  
LJ. Tanovic ◽  
P. Bojanic ◽  
R. Puzovic ◽  
S. Klimenko
Keyword(s):  
Experimental Study ◽  
Experimental Investigation ◽  
Cutting Force ◽  
Surface Finish ◽  
Normal Component ◽  
Natural Material ◽  
Grinding Process ◽  
Force Component ◽  
Diamond Grain

This paper offers an experimental study of the microcutting mechanisms in marble grinding to aid the optimization of the marble grinding process. The necessity for investigating these mechanisms is dictated by the increased use of marble in many applications and the fact that grinding and polishing processes are the dominant technologies used to meet surface finish requirements in this natural material. The experiments are aimed at the determination of the normal component of the cutting force and of the grain traces in microcutting with a single diamond grain. The investigations carried out make provisions for establishing critical grain penetration and cutting depths and allow the prediction of the normal cutting force component as a function of grain penetration speed and depth.

Study on Surface Integrity of PTFE Finished by Ultra-Precision Cutting and Surface Performance

2005 ◽  
Vol 291-292 ◽  
pp. 475-482 ◽  
Author(s):  
Koichi Okuda ◽  
Masayuki Nunobiki
Keyword(s):  
Thin Film ◽  
Surface Roughness ◽  
Cutting Force ◽  
Surface Integrity ◽  
Water Repellency ◽  
Diamond Cutting ◽  
Finished Surface ◽  
Ultra Precision ◽  
Surface Performance ◽  
The Relationship

This study aims at clarifying the relationship between the surface integrity of PTFE finished by an ultra-precision diamond cutting and the adhesion strength of a metal thin film. As the first step of this study, the basic properties such as surface integrity in the diamond cutting of PTFE and the effect of the surface roughness on the textile water repellency are demonstrated in this report. The following remarks were found. The measured roughness of finished surface largely exceeded the theoretical roughness, while the cutting force was very small comparing with aluminum and the flow type chips were formed. The surface with a smaller roughness tended to repel water.

scholarly journals Efficiency increase in profile deep grinding of turbine blade on NC multi-axes machines

2018 ◽  
Vol 2018 (4) ◽  
pp. 21-29
Author(s):  
Владимир Макаров ◽  
Vladimir Makarov ◽  
Сергей Никитин ◽  
Sergey Nikitin
Keyword(s):  
Cutting Force ◽  
Turbine Blade ◽  
Fatigue Resistance ◽  
Material Removal ◽  
Surface Profile ◽  
Dynamic Processes ◽  
Efficiency Increase ◽  
Deep Profile ◽  
Cutting Modes ◽  
Elementary Area

The paper reports the procedure of a cutting mode purpose at deep profile grinding on NC multi-axes machines on the basis of the modeling of thermo-dynamic processes in cutting areas with the purpose of ensuring turbine blade fatigue resistance. There are shown simulators allowing the definition and prediction of the dynamics of elastic, thermal and working processes in a technological system, material removal, cutting force, temperatures in the area of cutting and roughness of each elementary area of the surface profile on the basis of cutting modes, disk characteristics.

scholarly journals Influence of fibre orientation on cutting force in up and down milling of UD-CFRP composites

2020 ◽  
Vol 111 (3-4) ◽  
pp. 881-893
Author(s):  
Norbert Geier
Keyword(s):  
Cutting Force ◽  
Fibre Orientation ◽  
Orientation Angle ◽  
Radial Force ◽  
Fast Fourier Transformation ◽  
Force Component ◽  
Cfrp Composites ◽  
Carbon Fibre Reinforced Polymer ◽  
Fibre Reinforced Polymer ◽  
Full Factorial

Abstract Machining of carbon fibre reinforced polymer (CFRP) composites is extremely difficult, mainly due to their inhomogeneous and anisotropic properties. Predicting of cutting force during machining of CFRP is also difficult because the machinability properties of the composite are significantly orientation-dependent (fibre and machining directions). The main objective of the present study is to analyse the influence of fibre orientation on cutting force in milling of unidirectional CFRP. Up and down milling experiences were conducted based on a full factorial design. Experimental data were processed by fast Fourier transformation, regression analysis, and graphical adequate analysis. Multiple-order polynomial models were developed in order to minimise cutting force. Experimental results show that fibre orientation angle significantly influences the cutting force; furthermore, it does not have a significant effect on the passive force component, while the radial force component is more sensitive to the fibre orientation at up milling, than at down milling. An optimal condition is recommended for zig-zag milling of unidirectional CFRPs.

The Constant Force Component due to Material Separation and Its Contribution to the Size Effect in Specific Cutting Energy

2005 ◽  
Vol 128 (3) ◽  
pp. 811-815 ◽  
Author(s):  
Sathyan Subbiah ◽  
Shreyes N. Melkote
Keyword(s):  
Size Effect ◽  
Cutting Force ◽  
Orthogonal Cutting ◽  
Chip Thickness ◽  
Constant Force ◽  
Specific Cutting Energy ◽  
Force Component ◽  
Uncut Chip Thickness ◽  
Cutting Energy ◽  
Material Separation

The contribution of material separation in cutting ductile metals to the constant force component, and, hence, to the size effect in specific cutting energy is explored in this paper. A force-decomposition-based framework is proposed to reconcile the varied reasons given in literature for the size effect. In this framework, the cutting force is broken down into three components: one that is decreasing, another that is increasing, and the third that remains constant, with decreasing uncut chip thickness. The last component is investigated by performing orthogonal cutting experiments on OFHC copper at high rake angles of up to 70deg in an attempt to isolate it. As the rake angle is increased, the resulting experimental data show a trend toward a constant cutting-force component independent of the uncut chip thickness. Visual evidence of ductile tearing ahead of the tool associated with material separation leading to chip formation is shown. The measured constant force and the force needed for ductile crack extension are then compared.

Study on Load Analysis of Frame for Pavement Cold Recycling Machine

2013 ◽  
Vol 756-759 ◽  
pp. 4318-4321
Author(s):  
Jing Liu
Keyword(s):  
Cutting Force ◽  
Reaction Force ◽  
Rolling Resistance ◽  
Rear Wheel ◽  
Impact Factors ◽  
Force Component ◽  
Load Analysis ◽  
Cold Recycling ◽  
Load Impact

To analyze he load of the frame for pavement cold recycling machine. Firstly, the general conditions of the cold recycling machine was analyzed, the load impact factors and classification of cold recycling machine were expounded. Secondly, the load analysis was carried out by simulate the suffer force of machine and frame. Finally ,the reaction force of The front and rear Wheel are 103164N and 165471N, and the rolling resistance of the front and rear wheel are 2063N and 3309N, Horizontal direction force component of cutting force is 28800N,and perpendicular direction force component of cutting force is 23635N

Comparison of Sintered Carbide Shafts Turning with PCD and CBN Tools

2016 ◽  
Vol 686 ◽  
pp. 234-239
Author(s):  
Andrzej Matras ◽  
Robert Kowalczyk
Keyword(s):  
Surface Roughness ◽  
Cutting Force ◽  
Roughness Parameter ◽  
Material Structure ◽  
Force Component ◽  
Surface Roughness Parameter ◽  
Sintered Carbide ◽  
Hard Materials

The paper presents the results of turning tests with PCD and CBN tools of super hard materials such as sintered carbides WC-Co with different Co content in the material structure. In studies, the attention has been focused on the main cutting force component Fc and the surface roughness parameter Ra values, depending on the cutting data (vc, f, ap).

scholarly journals Taguchi Analysis on Cutting Forces and Temperature in Turning Titanium Ti-6Al-4V

2012 ◽  
pp. 59-63
Author(s):  
Satyanarayana Kosaraju ◽  
Venu Gopal Anne ◽  
Bangaru Babu Popuri
Keyword(s):  
Taguchi Method ◽  
Cutting Force ◽  
Process Parameters ◽  
Chemical Reactivity ◽  
Cutting Speed ◽  
Individual Performance ◽  
Process Parameter ◽  
Performance Characteristics ◽  
Depth Of Cut ◽  
Titanium Grade

Titanium alloy machining is hindered basically due to its high chemical reactivity and low thermal conductivity. The present work is focused on investigating the effect of process parameters on machinability performance characteristics and there by optimization of the turning of Titanium (Grade 5) based on Taguchi method. The cutting speed, feed and depth of cut were used as the process parameters where as the cutting force and temperature ware selected as performance characteristics. The L9 orthogonal array based on design of experiments was used to conduct experiments. The degree of influence of each process parameter on individual performance characteristic was analyzed from the experimental results obtained using Taguchi Method. The cutting speed was identified as the most influential process parameter on cutting force and temperature.

Machining Efficiency Increase when Nickel Based Alloy Machining

2017 ◽  
Vol 261 ◽  
pp. 22-27
Author(s):  
Andrzej Matras ◽  
Wojciech Zębala
Keyword(s):  
Cutting Force ◽  
Material Model ◽  
Tangential Component ◽  
Machining Efficiency ◽  
Chip Area ◽  
Simulation Strategy ◽  
Efficiency Increase ◽  
Nickel Based Alloy ◽  
Rate Optimization ◽  
Feed Rate Optimization

Paper presents some investigations, concerning simulation of the nickel based alloy machining. The aim of the research was an optimization of the cutting data for the purpose to increase the machining efficiency and stabilization of the tangential component of the total cutting force at the assumed level. A dedicated physical material model was built and then included to the simulation strategy. Authors demonstrated the influence of the feed rate optimization on the tangential component of the total cutting force value changes and the chip area and in this way the improvement of the cutting process.

scholarly journals Analytical estimation of diametral error in turning process considering flexible supports

2019 ◽  
Vol 272 ◽  
pp. 01054
Author(s):  
Kalidasan Rathinam ◽  
Sandeep Kumar ◽  
Vivek Sharma
Keyword(s):  
Cutting Force ◽  
Analytical Model ◽  
Metal Cutting ◽  
Slenderness Ratio ◽  
Research Work ◽  
Beam Theory ◽  
Work Piece ◽  
Force Component ◽  
Turning Process ◽  
Flexible Supports

Turning is a fundamental metal cutting process. Diametral accuracy plays a vital role while turning long and slender workpieces. Hence the estimation of diametral error becomes more important for work pieces generally with slenderness ratio greater than six. The diametral error during the turning process is caused mainly by radial cutting force component and tangential cutting force component. Apart from this, it is also affected by cutting conditions, rigidity of the machine tool and type of support condition of the work piece. The main aim of the present research work is to construct an analytical model of turning process and to estimate the diametral error of the work piece. The cutting tool edge deflection is determined based on Euler Bernoulli beam theory. The work piece is considered as propped cantilever beam with flexible supports at the ends. These flexible supports are introduced taking the rigidity of head stock and tail stock into consideration. The radial deflection of the work piece is estimated for different slenderness ratio. It was found that the diametral error was lesser near the head stock end when compared to the tail stock end. This is due to the fact that the rigidity of the head stock higher than the tail stock. The maximum diametral error was found almost in the middle of the work piece. This occurs due to the least rigidity at the center along the length of the work piece. The obtained results are also compared with the literature. A good match was found between the results of the analytical model and published literature.

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