scholarly journals Modeling and Simulation of High-Speed Machining Processes Based on Matlab/Simulink

2005 ◽  
pp. 627-634 ◽  
Author(s):  
Rodolfo E. Haber ◽  
J. R. Alique ◽  
S. Ros ◽  
R. H. Haber
Keyword(s):  
Modeling And Simulation ◽  
High Speed ◽  
High Speed Machining ◽  
Machining Processes ◽  
Matlab Simulink

Reduction of Vibrations due to Unbalance with Anti-Vibration Clearance Angle in High Speed Milling

2016 ◽  
Vol 836-837 ◽  
pp. 161-167
Author(s):  
Anna Thouvenin ◽  
Xin Li ◽  
Ning He ◽  
Liang Li
Keyword(s):  
Material Removal ◽  
High Speed ◽  
Removal Rate ◽  
Machining Process ◽  
High Speed Machining ◽  
Machining Processes ◽  
High Speed Milling ◽  
Clearance Angle ◽  
Fast Solution ◽  
Considerable Problem

High speed milling is one of the most commonly used machining processes in many fields of the industry. It is regarded as a simple and fast solution to achieve a high material removal rate, which allows an important production of parts. Unbalance is a problem in any machining process but becomes a considerable problem when reaching high speed machining. The vibrations due to an unbalanced tool or tool holder can result in a poor surface quality and a damaged tool. The damping of the vibrations can be achieved with a specially designed tool showing an anti-vibration clearance angle. This paper shows the influence of the anti-vibration clearance angle by a computational model and a set of experiments to see if it can reduce or suppress the vibrations due to unbalance in high speed milling.

Networked sensing for high-speed machining processes based on CORBA

2005 ◽  
Vol 119 (2) ◽  
pp. 418-426 ◽  
Author(s):  
Rodolfo E. Haber ◽  
Karina Cantillo ◽  
Jose E. Jiménez
Keyword(s):  
High Speed ◽  
High Speed Machining ◽  
Machining Processes

Dynamic Friction Measurements at Sliding Velocities Representative of High-Speed Machining Processes

2000 ◽  
Vol 122 (4) ◽  
pp. 834-848 ◽  
Author(s):  
H. D. Espinosa ◽  
A. J. Patanella ◽  
M. Fischer
Keyword(s):  
Strain Rate ◽  
High Speed ◽  
Experimental Methodology ◽  
Stress Wave Propagation ◽  
Fracture Mechanisms ◽  
Dynamic Friction ◽  
High Speed Machining ◽  
Machining Processes ◽  
Friction Coefficients ◽  
Al 6061

Understanding high speed machining processes requires knowledge of the dynamic friction response at the tool-workpiece interface, the high strain rate response of the workpiece material and its fracture mechanisms. In this paper, a novel experimental technique, consisting in the independent application of an axial static load and a dynamic torque, is used to investigate time resolved dynamic friction. Shear stress wave propagation along an input bar, pressing statically against an output bar, is analyzed. The quasi-static and kinetic friction coefficients of Ti-6Al-4V sliding against 1080 Steel, Al 6061-T6 sliding against 1080 Steel, and Al 6061-T6 sliding against Al 7075-T6, with various surface characteristics, are investigated. Sliding velocities up to 6.9 m/s are achieved. Surface roughness is varied to understand its role on the frictional response of the sliding interfaces. The dependence of friction coefficient on material strain-rate sensitivity is also assessed. Measured friction coefficients compared well with values reported in the literature using other experimental techniques. The experimental methodology discussed in this article provides a robust method for direct measurement of the quasi-static and dynamic friction coefficients representative of high-speed machining, metal-forming and ballistic penetration processes. [S0742-4787(00)01304-7]

Prediction of Cutting Forces in High Speed Machining of Ti6Al4V Using SPH Method

2015 ◽  
Author(s):  
Alaa A. Olleak ◽  
Hassan A. El-Hofy
Keyword(s):  
Cutting Forces ◽  
High Speed ◽  
Orthogonal Cutting ◽  
Chip Morphology ◽  
3D Models ◽  
Material Behavior ◽  
Coupled Analysis ◽  
High Speed Machining ◽  
Machining Processes ◽  
Sph Method

Over the last few decades, the interest in modeling of machining processes has been growing. In this regard, the smoothed particle hydrodynamics (SPH) method is one of the latest powerful techniques used for that purpose. The strength of SPH lies behind its accuracy in stress calculations and the ability to handle situations involving large amount of deformation, which is difficult to be tackled using traditional finite element methods. This work aims to present and evaluate the use of SPH method in modeling of high speed machining (HSM). A thermo-mechanical coupled analysis of both 2D and 3D models is performed using LS-DYNA. The simulation aims to predict the cutting forces and chip morphology during high speed orthogonal cutting of Ti6Al4V alloy. In order to accurately simulate the material behavior during cutting, Johnson-Cook material constitutive model is used. The results from SPH model are validated using published experimental data.

Tool wear in high speed machining

2000 ◽  
Vol 10 (PR9) ◽  
pp. Pr9-541-Pr9-546 ◽  
Author(s):  
A. Molinari ◽  
M. Nouari
Keyword(s):  
Tool Wear ◽  
High Speed ◽  
High Speed Machining
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